1964 – Began undergraduate research project in the University of Oklahoma Chemistry Department.
1965 – B.S. in Chemistry from the University of Oklahoma, Norman.
1966 – First peer-reviewed research publication (at OU).
G. O. Wood, D. D. Mueller, S. D. Christian, and H. E. Affspring, "Hydration of Benzoic Acid in Diphenylmethane," J. Phys. Chem. 70, 2691 (1966)
1969 – Ph.D. in Physical Chemistry from the University of Texas at Austin.
G. O. Wood, Ph.D. Dissertation, "Photolysis of Deuterium Chloride at l849A: Reactions Occurring with Added Chlorine, Hydrogen, Methane, and Inert Gases," University of Texas at Austin (1969).
1969 – Began a postdoctoral appointment in a Physical Chemistry Group at the Los Alamos Scientific Laboratory (LASL).
1970 – Dissertation research published.
G. O. Wood, and J. M. White, "Hot Atom Reactions in the Photolysis of Deuterium Chloride at 1849A," J. Chem. Phys. 52, 2613-21 (1970).
1972 – Post-doctoral research published.
G. O. Wood, "Isotope Exchange vs. Abstraction for H+DCl," J. Chem. Phys. 56, 1723-27 (1972).
1972 – Joined the Industrial Hygiene Group at LASL;
Began NIOSH-sponsored development of air sampling and analysis methods.
G. O. Wood and R. G. Anderson, "Personal Air Sampling for Vapors of Aniline Compounds," Am. Ind. Hyg. Assoc. J. 36, 538 (1975).
G. O. Wood, "A Method of Comparing Solid Sorbents for Specific Adsorption of Vapors," Proceedings of the Second NIOSH Solid Sorbents Roundtable, pp. 161-176, National Institute for Occupational Safety and Health, Cincinnati, OH (1976).
G. O. Wood and R. G. Anderson, "Formaldehyde in Air," P&CAM 235, NIOSH Manual of Analytical Methods, Second Ed., Vol. 1, National Institute for Occupational Safety and Health, Cincinnati, OH (1977). Basis Documents: LA-5973-PR, LA-6216-PR.
G. O. Wood and R. G. Anderson, "Aromatic Amines in Air," P&CAM 168, ibid (1977). Basis Documents: LA-5104-PR, LA-5164-PR, LA-5308-PR, LA-5389-PR, LA-5484-PR, LA-5634-PR.
G. O. Wood and R. G. Anderson, "Aliphatic Amines in Air," P&CAM 221, ibid (1977). Basis Documents: LA-5634-PR, LA-5973-PR, LA-6057-PR, LA-6216-PR, LA-6513-PR.
G. O. Wood and R. G. Anderson, "Hydrazine Compounds in Air," P&CAM 248, ibid (1977). Basis Documents: LA-6057-PR, LA-6216-PR, LA-6513-PR, LA-6738-PR, LA-7295-PR.
G. O. Wood, "Aminoethanol Compounds," P&CAM 270, NIOSH Manual of Analytical Methods, Second Ed., Vol. 4, National Institute for Occupational Safety and Health, Cincinnati, OH (1978). Basis Document: LA-7295-PR.
G. O. Wood, "Ethylenediamine and Diethylenetriamine," P&CAM 276, ibid (1978). Basis Document: LA-7295-PR.
G. O. Wood, "Methylamine," P&CAM 277, ibid (1978). Basis Document: LA-7295-PR.
G. O. Wood and Joyce W. Nickols, Development of Air-Monitoring Techniques Using Solid Sorbents, LA-7295-PR, Los Alamos Scientific Laboratory, Los Alamos, NM (1978).
1976 – Certified Industrial Hygienist (CIH) certification. Renewed through 2004. Currently retired status.
1976 – Began respirator cartridge research sponsored by the Nuclear Regulatory Commission.
G. O. Wood, G. J. Vogt, D. C. Gray, and C. A. Kasunic, Criteria and Test Methods for Certifying Air-Purifying Respirators Against Radioiodine, NUREG/CR-1055, LA-8029-PR, Los Alamos Scientific Laboratory, Los Alamos, NM (1979).
G. O. Wood, G. J. Vogt, and C. A. Kasunic, "Methyl Iodide Retention on Charcoal Sorbents at Parts-per-Million Concentrations, Proceedings of 15th DOE Nuclear Air Cleaning Conference, Melvin First, Ed., (1979).
G. O. Wood, F. O. Valdez, "Nonradiometric Testing of Radioiodine Sorbents Using Methyl Iodide," Proceedings of the 16th DOE Nuclear Air Cleaning Conference, Melvin First, Ed., CONF-801038 (1981).
G. O. Wood, "Desorption of TEDA From Impregnated Charcoals," Proceedings of the 16th DOE Nuclear Air Cleaning Conference, Melvin First, Ed., CONF-801038 (1981).
G. O. Wood, "Respirator Canister Testing for Radioiodine," Am. Ind. Hyg. Assoc. J. 42, 570 (1981).
G. O. Wood, F. O. Valdez, and V. Gutschick, Criteria and Test Methods Certifying Air-Purifving Respirator Cartridges and Canisters Against Radioiodine, NUREG/CR-3403, LA-9827-PR, Los Alamos National Laboratory (1983).
G. O. Wood, "Desorption of TEDA from Impregnated Respirator and Adsorber Charcoals," Am. Ind. Hyg. Assoc. J. 45, 622-625 (1984).
G. O. Wood, "Effects of Air Temperatures and Humidities on Efficiencies and Lifetimes of Air-Purifying Chemical Respirator Cartridges Tested Against Methyl Iodide." Amer. Ind. Hyg. Assoc. J. 46, 251-256 (1985).
1984 – Analytical chemistry study.
G.O. Wood, “Quantitative Purgeability of Organics from Water and It’s Applications,” pp. 47-50 in Occupational Health and Environment Research 1984: Health, Safety, and Environment Division Progress Report, LA-10642-PR, G.L. Voelz, compiler, Los Alamos National Laboratory, Los Alamos, NM (1986).
1984 – Began involvement in respirator cartridge, gas mask canister, and carbon studies sponsored by the Departments of Defense and Energy.
(See progress reports LA-10642-PR, p. 23; LA-10800-MS, p. 38; LA-11100-MS, pp. 17-23; LA-11257-PR, pp. 31-36; LA-11672-PR, pp. 38-46; LA-12222-PR, pp. 21-25; LA-13264-PR, pp. 17-18; LA-13438-PR, pp. 36-38; LA-13579-PR, pp. 57-60; LA-13766-PR, pp. 55-60; LA-13901-PR, pp. 78-82, for objectives and summaries of accomplishments.)
G. O. Wood, "A Model for Adsorption Capacities of Charcoal Beds. I. Relative Humidity Effects," Am. Ind. Hyg. Assoc. J. 48, 622-625 (1987).
G. O. Wood, "A Model for Adsorption Capacities of Charcoal Beds. II. Challenge Concentration Effects," Am. Ind. Hyg. Assoc. J. 48, 703-709 (1987).
G. O. Wood, Letter to the Editor (Technical), Am. Ind. Hyg. Assoc. J, 48, A-578 (1987).
G. O. Wood and E. S. Moyer, "A Review of the Wheeler Equation and Comparisons of Its Applications to Organic Vapor Respirator Cartridge Breakthrough Data," Am. Ind. Hyg. Assoc. J. 50, 400-407 (1989).
G. O. Wood and M. W. Ackley, "A Testing Protocol for Organic Vapor Respirator Canisters and Cartridges," Am. Ind. Hyg. Assoc. J. 50, 651-654 (1989).
G. O. Wood and E. S. Moyer, "A Review and Comparison of Adsorption Isotherm Equations Used to Correlate and Predict Organic Vapor Cartridge Capacities," Am. Ind. Hyg. Assoc. J. 52, 235-242 (1991).
G. O. Wood, "Activated Carbon Adsorption Capacities for Vapors," Carbon 30, 593-599 (1992).
G. O. Wood and J. F. Stampfer, "Adsorption Rate Coefficients for Gases and Vapors on Activated Carbon," Carbon 31, 195-200 (1993).
G. O. Wood, "Organic Vapor Respirator Breakthrough Curve Analysis," Journal of the International Society for Respiratory Protection, 10, 5-17 (1993).
1986 (midyear) – Began 1-year sabbatical at the U.S. Army Edgewood Chemical Defense Center, Aberdeen Proving Ground, Maryland.
J. J. Mahle, D. K. Friday, and G. O. Wood, "Vapor Phase Equilibria of Water on Activated Carbons," in Proceedings of the 1986 U.S. Army Chemical Research. Development. and Engineering Center Scientific Conference on Chemical Defense Research, CRDEC-SP-87008, 481-487, Edgewood, MD (1987).
D. K. Friday, J. J. Mahle, and G. O. Wood, "The Dynamic Behavior of Water on Activated Carbon," ibid., 489-496.
T. R. Perry, G. O. Wood, and J. A. Rehrmann, "Determination of Water Uptake on BPL, ASC, and ASC/TEDA Carbons, ibid., 1181-1185.
1988 – Began 8 years as a member and secretary of the ANSI Z88.8 subcommittee to produce “Performance Criteria and Test Methods for Air-Purifying Respirators.”
1991 – Liquid density modeling.
G. O. Wood, "Predicting Liquid Densities of Organic Compounds: I. Halogenated and Oxygenated," in the Proceedings of the 1991 U.S. Army Chemical Research, Development and Engineering Center Scientific Conference on Chemical Defense Research, ERDEC-SP-002, 573-578 (1993).
G. O. Wood, "Predicting Liquid Densities of Organic Compounds: II. Nitrogen and Sulfur Compounds," in the Proceedings of the 1992 U.S. Army Edgewood Research, Development and Engineering Center Scientific Conference on Chemical Defense Research, ERDEC-SP-007, 951-957 (1993).
1993 – Ventilation studies.
G. O. Wood, "Characterization of Gas Mixing in an Exhaust Stack," Am. Ind. Hyg. Assoc. J. 56, 788-793 (1995).
J. C. Rodgers, C. I. Fairchild, G. O. Wood, C.A. Ortiz, A Muyshondt, and A.R. McFarland, “Single Point Aerosol Sampling: Evaluation of Mixing and Probe Performance in a Nuclear Stack,” Health Physics Journal, 70 (1), 25-35 (1996).
1993 – Began hazard studies for the Los Alamos National Laboratory.
M. J. Haertling and G. O. Wood, Non-Radiological Hazards Analysis: B61-7 (U), classified report ESA-1-94-163S, Los Alamos National Laboratory, Los Alamos, NM (March 1994).
1993 – Began new respirator and canister studies for U.S. Army.
G. O. Wood and C. Karwacki, "The Influence of Carbon Granule Sizes on Butane Breakthrough Curves," in the Proceedings of the 1993 ERDEC Scientific Conference on Chemical Defense Research, 1035-1041, ERDEC-SP-024, Aberdeen Proving Ground, MD (1994).
G. O. Wood, Sorbent Reactivity Studies: Perfluoroisobutene on Carbons (U), classified report LACP-94-003, Los Alamos National Laboratory, Los Alamos, NM (1994).
G. O. Wood, Sorbent Reactivity Studies: Bis(Trifluoromethyl) Disulfide on Carbon (U), classified report LACP-94-004, Los Alamos National Laboratory, Los Alamos, NM (1994).
G. O. Wood, Sorbent Reactivity Studies: Perfluorocyclobutene on Carbons (U), classified report LACP-94-003, Los Alamos National Laboratory, Los Alamos, NM (1994).
Karwacki, J.A. Rehrmann, P. X. Jones, and G. O. Wood,, "Adsorption of HCFC-123 by Commercially Available Activated Carbons," in the Proceedings of the 1994 ERDEC Scientific Conference on Chemical and Biological Defense Research, Dorothy A. Berg, ed., ERDEC-SP-036, 899-903 (May 1996).
G. O. Wood and C. Karwacki, “Effects of Carbon Blending and Granule Size Layering on Butane Breakthrough Curves," ibid, 927-931 (May 1996).
G. O. Wood, J. A. Rehrmann, and C. J. Karwacki, “Predictors of Micropore Volumes for Activated Carbonaceous Materials,” in the Proceedings of the 1995 ERDEC Scientific Conference on Chemical and Biological Defense Research, Dorothy A. Berg, ed., ERDEC-SP-043, 943-948 (July 1996).
G. O. Wood, “Nitric Acid Vapor Removal by Activated Impregnated Carbons,” published in the Proceedings of the 1996 ERDEC Scientific Conference on Chemical and Biological Defense Research, ERDEC –SP-048, 955-961, Aberdeen Proving Ground, Maryland (October 1997).
G. Wood and R. Kissane, "Evaluation of Commercial Air-Purifying Respirator Cartridges for Protection Against Vapors of Nitric Acid," published in the Technology Development, Evaluation, and Application FY1996 Progress Report, 17-18, LA-13264-PR, Los Alamos National Laboratory, Larry G. Hoffman, ed. (May 1997).
G. O. Wood and R. Kissane, “Reusability Study with Organic Vapor Air-Purifying Respirator Cartridges,” published in the Proceedings of the 1997 U.S. Army Edgewood Research, Development and Engineering Center Scientific Conference on Chemical and Biological Defense Research, ERDEC-SP-063, 873-877, Aberdeen Proving Ground, Maryland. (July 1998).
G. O. Wood, “Desorption of Organic Vapors from Stored C2A1 Gas Mask Canisters,” published in the Proceedings of the 1998 ERDEC Scientific Conference on Chemical and Biological Defense Research, ECBC-SP-004, 807-812, Aberdeen Proving Ground, Maryland (July 1999).
1994 – Distinguished Performance Award for 1993 from the Los Alamos National Laboratory for participation on the Representative Sampling Project Team.
1994 – First predictive model published.
G. O. Wood, "Estimating Service Lives of Organic Vapor Cartridges," Am. Ind. Hyg. Assoc. J. 55 (1) 11-15 (1994).
1995 – John M. White 1994 Award from the AIHA Respiratory Protection Committee.
1997 – Permeation Study.
G. Wood and R. Kissane, “FRHAM-TEX II Cool Suit Material Testing for Water (and Therefore, Tritium) Protection,” in the Technology Development, Evaluation, and Application (TDEA) FY1997 Progress Report, LA-13438-PR, 39-41, Larry G. Hoffman, ed., Los Alamos National Laboratory (May 1998).
1998 – OSHA Web Site Publication.
OSHA first published on its web site the original “Estimating Service Lives…” model, calculator (The Advisor Genius), and breakthrough time tables based on it for 120 chemicals. The outdated Advisor Genius was removed in 2015. Commercial respirator companies also offered their versions of Service Life Software for Organic Vapor Cartridges based on this original model.
2000 – Review and analysis of replacement vapors for OV cartridge testing.
E.S. Moyer, S.J. Smith, and G.O. Wood, “Carbon Tetrachloride Replacement Compounds for Organic Vapor Air-Purifying Respirator Cartridge Testing – A Review,” Am. Ind. Hyg. Assoc. J. 62, 494-507 (2001).
2000 – Restarted development of predictive respirator cartridge service life models for the ORC Respirator Cartridge Testing Task Force. Initial funding was from CMA, API, ISEA, and SOCMA; later funding was from NIOSH.
G. Wood, Reviews of Models for Adsorption of Single Vapors, Mixtures of Vapors, and Vapors at High Humidities on Activated Carbon for Applications Including Predicting Service Lives of Organic Vapor Respirator Cartridges, Los Alamos National Laboratory report LA-UR-00-1531 (2000).
G.O. Wood, “Affinity Coefficients of the Polanyi/Dubinin Adsorption Isotherm Equations: A Review with Compilations and Correlations," Carbon 39, 343-356 (2001).
G.O. Wood, “Review and Comparisons of D/R Models of Equilibrium Adsorption of Binary Mixtures of Organic Vapors on Activated Carbons,” Carbon 40, 231-239 (2002).
G.O. Wood, “A Review of the Effects of Covapors on Adsorption Rate Coefficients of Organic Vapors Adsorbed onto Activated Carbon from Flowing Gases,” Carbon 40, 685-694 (2002).
G.O. Wood, “Quantification and Application of Skew of Breakthrough Curves for Gases and Vapors Eluting from Activated Carbon Beds,” Carbon 40, 1883-1890 (2002).
G.O. Wood and P. Lodewyckx, “Correlations for High Humidity Corrections of Rate Coefficients for Adsorption of Organic Vapors on Activated Carbons in Air-Purifying Respirator Cartridges,” Journal of the International Society for Respiratory Protection Spring/Summer 2002, 58-64 (2002).
G.O. Wood and P. Lodewyckx, “An Extended Equation for Rate Coefficients for Adsorption of Organic Vapors and Gases on Activated Carbons in Air-Purifying Respirator Cartridges,” Am. Ind. Hyg. Assoc. J. 64, 646-650 (2003).
P. Lodewyckx, G.O. Wood, and S.K. Ryu, “The Wheeler-Jonas Equation: A Versatile Tool for the Prediction of Carbon Bed Breakthrough Times,” Carbon 42, 1345-1349 (2004)
2001 – Authored chapter in reference book.
G.O. Wood, “Chemical Cartridge Respirators and Gas Masks, Chapter 7,” in “Respiratory Protection: A Manual and Guideline” (Third Edition), C. E. Colton and L. M. Brosseau, eds., American Industrial Hygiene Association Press, Fairfax, Virginia (2001).
2004 – Second predictive model published.
G.O. Wood, “Estimating Service Lives of Organic Vapor Cartridges II: A Single Vapor at All Humidities,” Journal of Occupational and Environmental Hygiene 1, 472-492 (2004).
2004 – Data analysis for OSHA
G. Wood, "Analysis of the OSHA Half-Mask WPF Database According to Techniques Described in Field Performance Measurements of Half-Facepiece Respirators: Developing Probability Estimates to Evaluate the Adequacy of an APF of 10." by W.R. Myers and Z. Zhuang, Am. Ind. Hyg. Assoc. J. 59, 796-801 (1998)." unpublished(2004).
2004 – Computer program (Breakthrough) for the second predictive model and a tutorial for it was distributed by NIOSH and posted on the OSHA web site for downloading (since replaced by MultiVapor).
2004 (midyear) – Retired from the Los Alamos National Laboratory and began independent consulting and research for the CDC/NIOSH National Personal Protective Technology Laboratory, Pittsburgh.
2005 – Third predictive model published. Computer program (GasRemove) written to apply it. (see Computer Programs page for download).
G.O. Wood, “Estimating Service Lives of Air-Purifying Respirator Cartridges for Reactive Gas Removal,” Journal of Occupational and Environmental Hygiene 2, 414-423 (2005).
2005 – Fourth predictive model completed. Computer program (MultiVapor) written and distributed by NIOSH for beta testing. Tutorial prepared.
2006 – Downloadable version of the MultiVapor, all-humidity, organic vapor respirator service life estimation program and tutorial set up on the CDC/NIOSH/ NPPTL web site with a link on the OSHA web site: http://www.cdc.gov/niosh/npptl/multivapor/multivapor.html
2006 – Awarded the Edward J. Baier Technical Achievement Award by the American Industrial Hygiene Association.
2007 – Fourth predictive model published.
G.O. Wood and J.L. Snyder, “Estimating Service Lives of Organic Vapor Cartridges III: Multiple Vapors at All Humidities,” Journal of Occupational and Environmental Hygiene 4, 363-374 (2007).
2007 – Online version of MultiVapor published (now available only on this web site, GerryOWood.com).
2008 – Awarded the 2008 Hyatt Award by the International Society for Respiratory Protection for Outstanding Scientific/Technical Contributions in the Field of Respiratory Protection, Dublin, Ireland, September 2008.
2009 – Parameters for MultiVapor developed.
G.O. Wood, "D-R Plots and Typical Parameters for Several OV and Multigas Cartridges and Canisters," Journal of the International Society for Respiratory Protection 26, 71-81 (2009).
2011 – Fifth predictive model published.
G.O. Wood and J.L. Snyder, “Estimating Reusability of Organic Air-Purifying Respirator Cartridges,” Journal of Occupational and Environmental Hygiene 8, 609-617 (2011).
2012 - Prepared a version of MultiVapor with IBUR estimation
IBUR = Immediate Breakthrough Upon Reuse for reusability estimation (see Computer Programs page for download).
2013 – Guidance documents completed for EPA.
Anjali Lamba and Gerry O. Wood, "EPA Guidance for Determining Organic Vapor Cartridge Service for NIOSH Approved Respirators," presented at the 2014 American Industrial Hygiene Conference and Exhibition, San Antonio, TX, (June 2014).
Gerry O. Wood and Anjali Lamba, "Correlating and Extrapolating Air-Purifying Respirator Cartridge Breakthrough Times--A Critical Review," presented at the International Society for Respiratory Protection 17th International Conference, Prague, Czech Republic (September 2014).
2015 – Published review article.
G.O. Wood, "Correlating and Extrapolating Air-Purifying Respirator Cartridge Breakthrough Times--A Review," Journal of the International Society for Respiratory Protection 32, 23-36 (2015).
2017 – Published review article.
G.O. Wood, "Testing Air-Purifying Chemical Respirator Cartridges: A Review of Options," Journal of the International Society for Respiratory Protection 34 (1), 26-39 (2017).
1965 – B.S. in Chemistry from the University of Oklahoma, Norman.
1966 – First peer-reviewed research publication (at OU).
G. O. Wood, D. D. Mueller, S. D. Christian, and H. E. Affspring, "Hydration of Benzoic Acid in Diphenylmethane," J. Phys. Chem. 70, 2691 (1966)
1969 – Ph.D. in Physical Chemistry from the University of Texas at Austin.
G. O. Wood, Ph.D. Dissertation, "Photolysis of Deuterium Chloride at l849A: Reactions Occurring with Added Chlorine, Hydrogen, Methane, and Inert Gases," University of Texas at Austin (1969).
1969 – Began a postdoctoral appointment in a Physical Chemistry Group at the Los Alamos Scientific Laboratory (LASL).
1970 – Dissertation research published.
G. O. Wood, and J. M. White, "Hot Atom Reactions in the Photolysis of Deuterium Chloride at 1849A," J. Chem. Phys. 52, 2613-21 (1970).
1972 – Post-doctoral research published.
G. O. Wood, "Isotope Exchange vs. Abstraction for H+DCl," J. Chem. Phys. 56, 1723-27 (1972).
1972 – Joined the Industrial Hygiene Group at LASL;
Began NIOSH-sponsored development of air sampling and analysis methods.
G. O. Wood and R. G. Anderson, "Personal Air Sampling for Vapors of Aniline Compounds," Am. Ind. Hyg. Assoc. J. 36, 538 (1975).
G. O. Wood, "A Method of Comparing Solid Sorbents for Specific Adsorption of Vapors," Proceedings of the Second NIOSH Solid Sorbents Roundtable, pp. 161-176, National Institute for Occupational Safety and Health, Cincinnati, OH (1976).
G. O. Wood and R. G. Anderson, "Formaldehyde in Air," P&CAM 235, NIOSH Manual of Analytical Methods, Second Ed., Vol. 1, National Institute for Occupational Safety and Health, Cincinnati, OH (1977). Basis Documents: LA-5973-PR, LA-6216-PR.
G. O. Wood and R. G. Anderson, "Aromatic Amines in Air," P&CAM 168, ibid (1977). Basis Documents: LA-5104-PR, LA-5164-PR, LA-5308-PR, LA-5389-PR, LA-5484-PR, LA-5634-PR.
G. O. Wood and R. G. Anderson, "Aliphatic Amines in Air," P&CAM 221, ibid (1977). Basis Documents: LA-5634-PR, LA-5973-PR, LA-6057-PR, LA-6216-PR, LA-6513-PR.
G. O. Wood and R. G. Anderson, "Hydrazine Compounds in Air," P&CAM 248, ibid (1977). Basis Documents: LA-6057-PR, LA-6216-PR, LA-6513-PR, LA-6738-PR, LA-7295-PR.
G. O. Wood, "Aminoethanol Compounds," P&CAM 270, NIOSH Manual of Analytical Methods, Second Ed., Vol. 4, National Institute for Occupational Safety and Health, Cincinnati, OH (1978). Basis Document: LA-7295-PR.
G. O. Wood, "Ethylenediamine and Diethylenetriamine," P&CAM 276, ibid (1978). Basis Document: LA-7295-PR.
G. O. Wood, "Methylamine," P&CAM 277, ibid (1978). Basis Document: LA-7295-PR.
G. O. Wood and Joyce W. Nickols, Development of Air-Monitoring Techniques Using Solid Sorbents, LA-7295-PR, Los Alamos Scientific Laboratory, Los Alamos, NM (1978).
1976 – Certified Industrial Hygienist (CIH) certification. Renewed through 2004. Currently retired status.
1976 – Began respirator cartridge research sponsored by the Nuclear Regulatory Commission.
G. O. Wood, G. J. Vogt, D. C. Gray, and C. A. Kasunic, Criteria and Test Methods for Certifying Air-Purifying Respirators Against Radioiodine, NUREG/CR-1055, LA-8029-PR, Los Alamos Scientific Laboratory, Los Alamos, NM (1979).
G. O. Wood, G. J. Vogt, and C. A. Kasunic, "Methyl Iodide Retention on Charcoal Sorbents at Parts-per-Million Concentrations, Proceedings of 15th DOE Nuclear Air Cleaning Conference, Melvin First, Ed., (1979).
G. O. Wood, F. O. Valdez, "Nonradiometric Testing of Radioiodine Sorbents Using Methyl Iodide," Proceedings of the 16th DOE Nuclear Air Cleaning Conference, Melvin First, Ed., CONF-801038 (1981).
G. O. Wood, "Desorption of TEDA From Impregnated Charcoals," Proceedings of the 16th DOE Nuclear Air Cleaning Conference, Melvin First, Ed., CONF-801038 (1981).
G. O. Wood, "Respirator Canister Testing for Radioiodine," Am. Ind. Hyg. Assoc. J. 42, 570 (1981).
G. O. Wood, F. O. Valdez, and V. Gutschick, Criteria and Test Methods Certifying Air-Purifving Respirator Cartridges and Canisters Against Radioiodine, NUREG/CR-3403, LA-9827-PR, Los Alamos National Laboratory (1983).
G. O. Wood, "Desorption of TEDA from Impregnated Respirator and Adsorber Charcoals," Am. Ind. Hyg. Assoc. J. 45, 622-625 (1984).
G. O. Wood, "Effects of Air Temperatures and Humidities on Efficiencies and Lifetimes of Air-Purifying Chemical Respirator Cartridges Tested Against Methyl Iodide." Amer. Ind. Hyg. Assoc. J. 46, 251-256 (1985).
1984 – Analytical chemistry study.
G.O. Wood, “Quantitative Purgeability of Organics from Water and It’s Applications,” pp. 47-50 in Occupational Health and Environment Research 1984: Health, Safety, and Environment Division Progress Report, LA-10642-PR, G.L. Voelz, compiler, Los Alamos National Laboratory, Los Alamos, NM (1986).
1984 – Began involvement in respirator cartridge, gas mask canister, and carbon studies sponsored by the Departments of Defense and Energy.
(See progress reports LA-10642-PR, p. 23; LA-10800-MS, p. 38; LA-11100-MS, pp. 17-23; LA-11257-PR, pp. 31-36; LA-11672-PR, pp. 38-46; LA-12222-PR, pp. 21-25; LA-13264-PR, pp. 17-18; LA-13438-PR, pp. 36-38; LA-13579-PR, pp. 57-60; LA-13766-PR, pp. 55-60; LA-13901-PR, pp. 78-82, for objectives and summaries of accomplishments.)
G. O. Wood, "A Model for Adsorption Capacities of Charcoal Beds. I. Relative Humidity Effects," Am. Ind. Hyg. Assoc. J. 48, 622-625 (1987).
G. O. Wood, "A Model for Adsorption Capacities of Charcoal Beds. II. Challenge Concentration Effects," Am. Ind. Hyg. Assoc. J. 48, 703-709 (1987).
G. O. Wood, Letter to the Editor (Technical), Am. Ind. Hyg. Assoc. J, 48, A-578 (1987).
G. O. Wood and E. S. Moyer, "A Review of the Wheeler Equation and Comparisons of Its Applications to Organic Vapor Respirator Cartridge Breakthrough Data," Am. Ind. Hyg. Assoc. J. 50, 400-407 (1989).
G. O. Wood and M. W. Ackley, "A Testing Protocol for Organic Vapor Respirator Canisters and Cartridges," Am. Ind. Hyg. Assoc. J. 50, 651-654 (1989).
G. O. Wood and E. S. Moyer, "A Review and Comparison of Adsorption Isotherm Equations Used to Correlate and Predict Organic Vapor Cartridge Capacities," Am. Ind. Hyg. Assoc. J. 52, 235-242 (1991).
G. O. Wood, "Activated Carbon Adsorption Capacities for Vapors," Carbon 30, 593-599 (1992).
G. O. Wood and J. F. Stampfer, "Adsorption Rate Coefficients for Gases and Vapors on Activated Carbon," Carbon 31, 195-200 (1993).
G. O. Wood, "Organic Vapor Respirator Breakthrough Curve Analysis," Journal of the International Society for Respiratory Protection, 10, 5-17 (1993).
1986 (midyear) – Began 1-year sabbatical at the U.S. Army Edgewood Chemical Defense Center, Aberdeen Proving Ground, Maryland.
J. J. Mahle, D. K. Friday, and G. O. Wood, "Vapor Phase Equilibria of Water on Activated Carbons," in Proceedings of the 1986 U.S. Army Chemical Research. Development. and Engineering Center Scientific Conference on Chemical Defense Research, CRDEC-SP-87008, 481-487, Edgewood, MD (1987).
D. K. Friday, J. J. Mahle, and G. O. Wood, "The Dynamic Behavior of Water on Activated Carbon," ibid., 489-496.
T. R. Perry, G. O. Wood, and J. A. Rehrmann, "Determination of Water Uptake on BPL, ASC, and ASC/TEDA Carbons, ibid., 1181-1185.
1988 – Began 8 years as a member and secretary of the ANSI Z88.8 subcommittee to produce “Performance Criteria and Test Methods for Air-Purifying Respirators.”
1991 – Liquid density modeling.
G. O. Wood, "Predicting Liquid Densities of Organic Compounds: I. Halogenated and Oxygenated," in the Proceedings of the 1991 U.S. Army Chemical Research, Development and Engineering Center Scientific Conference on Chemical Defense Research, ERDEC-SP-002, 573-578 (1993).
G. O. Wood, "Predicting Liquid Densities of Organic Compounds: II. Nitrogen and Sulfur Compounds," in the Proceedings of the 1992 U.S. Army Edgewood Research, Development and Engineering Center Scientific Conference on Chemical Defense Research, ERDEC-SP-007, 951-957 (1993).
1993 – Ventilation studies.
G. O. Wood, "Characterization of Gas Mixing in an Exhaust Stack," Am. Ind. Hyg. Assoc. J. 56, 788-793 (1995).
J. C. Rodgers, C. I. Fairchild, G. O. Wood, C.A. Ortiz, A Muyshondt, and A.R. McFarland, “Single Point Aerosol Sampling: Evaluation of Mixing and Probe Performance in a Nuclear Stack,” Health Physics Journal, 70 (1), 25-35 (1996).
1993 – Began hazard studies for the Los Alamos National Laboratory.
M. J. Haertling and G. O. Wood, Non-Radiological Hazards Analysis: B61-7 (U), classified report ESA-1-94-163S, Los Alamos National Laboratory, Los Alamos, NM (March 1994).
1993 – Began new respirator and canister studies for U.S. Army.
G. O. Wood and C. Karwacki, "The Influence of Carbon Granule Sizes on Butane Breakthrough Curves," in the Proceedings of the 1993 ERDEC Scientific Conference on Chemical Defense Research, 1035-1041, ERDEC-SP-024, Aberdeen Proving Ground, MD (1994).
G. O. Wood, Sorbent Reactivity Studies: Perfluoroisobutene on Carbons (U), classified report LACP-94-003, Los Alamos National Laboratory, Los Alamos, NM (1994).
G. O. Wood, Sorbent Reactivity Studies: Bis(Trifluoromethyl) Disulfide on Carbon (U), classified report LACP-94-004, Los Alamos National Laboratory, Los Alamos, NM (1994).
G. O. Wood, Sorbent Reactivity Studies: Perfluorocyclobutene on Carbons (U), classified report LACP-94-003, Los Alamos National Laboratory, Los Alamos, NM (1994).
Karwacki, J.A. Rehrmann, P. X. Jones, and G. O. Wood,, "Adsorption of HCFC-123 by Commercially Available Activated Carbons," in the Proceedings of the 1994 ERDEC Scientific Conference on Chemical and Biological Defense Research, Dorothy A. Berg, ed., ERDEC-SP-036, 899-903 (May 1996).
G. O. Wood and C. Karwacki, “Effects of Carbon Blending and Granule Size Layering on Butane Breakthrough Curves," ibid, 927-931 (May 1996).
G. O. Wood, J. A. Rehrmann, and C. J. Karwacki, “Predictors of Micropore Volumes for Activated Carbonaceous Materials,” in the Proceedings of the 1995 ERDEC Scientific Conference on Chemical and Biological Defense Research, Dorothy A. Berg, ed., ERDEC-SP-043, 943-948 (July 1996).
G. O. Wood, “Nitric Acid Vapor Removal by Activated Impregnated Carbons,” published in the Proceedings of the 1996 ERDEC Scientific Conference on Chemical and Biological Defense Research, ERDEC –SP-048, 955-961, Aberdeen Proving Ground, Maryland (October 1997).
G. Wood and R. Kissane, "Evaluation of Commercial Air-Purifying Respirator Cartridges for Protection Against Vapors of Nitric Acid," published in the Technology Development, Evaluation, and Application FY1996 Progress Report, 17-18, LA-13264-PR, Los Alamos National Laboratory, Larry G. Hoffman, ed. (May 1997).
G. O. Wood and R. Kissane, “Reusability Study with Organic Vapor Air-Purifying Respirator Cartridges,” published in the Proceedings of the 1997 U.S. Army Edgewood Research, Development and Engineering Center Scientific Conference on Chemical and Biological Defense Research, ERDEC-SP-063, 873-877, Aberdeen Proving Ground, Maryland. (July 1998).
G. O. Wood, “Desorption of Organic Vapors from Stored C2A1 Gas Mask Canisters,” published in the Proceedings of the 1998 ERDEC Scientific Conference on Chemical and Biological Defense Research, ECBC-SP-004, 807-812, Aberdeen Proving Ground, Maryland (July 1999).
1994 – Distinguished Performance Award for 1993 from the Los Alamos National Laboratory for participation on the Representative Sampling Project Team.
1994 – First predictive model published.
G. O. Wood, "Estimating Service Lives of Organic Vapor Cartridges," Am. Ind. Hyg. Assoc. J. 55 (1) 11-15 (1994).
1995 – John M. White 1994 Award from the AIHA Respiratory Protection Committee.
1997 – Permeation Study.
G. Wood and R. Kissane, “FRHAM-TEX II Cool Suit Material Testing for Water (and Therefore, Tritium) Protection,” in the Technology Development, Evaluation, and Application (TDEA) FY1997 Progress Report, LA-13438-PR, 39-41, Larry G. Hoffman, ed., Los Alamos National Laboratory (May 1998).
1998 – OSHA Web Site Publication.
OSHA first published on its web site the original “Estimating Service Lives…” model, calculator (The Advisor Genius), and breakthrough time tables based on it for 120 chemicals. The outdated Advisor Genius was removed in 2015. Commercial respirator companies also offered their versions of Service Life Software for Organic Vapor Cartridges based on this original model.
2000 – Review and analysis of replacement vapors for OV cartridge testing.
E.S. Moyer, S.J. Smith, and G.O. Wood, “Carbon Tetrachloride Replacement Compounds for Organic Vapor Air-Purifying Respirator Cartridge Testing – A Review,” Am. Ind. Hyg. Assoc. J. 62, 494-507 (2001).
2000 – Restarted development of predictive respirator cartridge service life models for the ORC Respirator Cartridge Testing Task Force. Initial funding was from CMA, API, ISEA, and SOCMA; later funding was from NIOSH.
G. Wood, Reviews of Models for Adsorption of Single Vapors, Mixtures of Vapors, and Vapors at High Humidities on Activated Carbon for Applications Including Predicting Service Lives of Organic Vapor Respirator Cartridges, Los Alamos National Laboratory report LA-UR-00-1531 (2000).
G.O. Wood, “Affinity Coefficients of the Polanyi/Dubinin Adsorption Isotherm Equations: A Review with Compilations and Correlations," Carbon 39, 343-356 (2001).
G.O. Wood, “Review and Comparisons of D/R Models of Equilibrium Adsorption of Binary Mixtures of Organic Vapors on Activated Carbons,” Carbon 40, 231-239 (2002).
G.O. Wood, “A Review of the Effects of Covapors on Adsorption Rate Coefficients of Organic Vapors Adsorbed onto Activated Carbon from Flowing Gases,” Carbon 40, 685-694 (2002).
G.O. Wood, “Quantification and Application of Skew of Breakthrough Curves for Gases and Vapors Eluting from Activated Carbon Beds,” Carbon 40, 1883-1890 (2002).
G.O. Wood and P. Lodewyckx, “Correlations for High Humidity Corrections of Rate Coefficients for Adsorption of Organic Vapors on Activated Carbons in Air-Purifying Respirator Cartridges,” Journal of the International Society for Respiratory Protection Spring/Summer 2002, 58-64 (2002).
G.O. Wood and P. Lodewyckx, “An Extended Equation for Rate Coefficients for Adsorption of Organic Vapors and Gases on Activated Carbons in Air-Purifying Respirator Cartridges,” Am. Ind. Hyg. Assoc. J. 64, 646-650 (2003).
P. Lodewyckx, G.O. Wood, and S.K. Ryu, “The Wheeler-Jonas Equation: A Versatile Tool for the Prediction of Carbon Bed Breakthrough Times,” Carbon 42, 1345-1349 (2004)
2001 – Authored chapter in reference book.
G.O. Wood, “Chemical Cartridge Respirators and Gas Masks, Chapter 7,” in “Respiratory Protection: A Manual and Guideline” (Third Edition), C. E. Colton and L. M. Brosseau, eds., American Industrial Hygiene Association Press, Fairfax, Virginia (2001).
2004 – Second predictive model published.
G.O. Wood, “Estimating Service Lives of Organic Vapor Cartridges II: A Single Vapor at All Humidities,” Journal of Occupational and Environmental Hygiene 1, 472-492 (2004).
2004 – Data analysis for OSHA
G. Wood, "Analysis of the OSHA Half-Mask WPF Database According to Techniques Described in Field Performance Measurements of Half-Facepiece Respirators: Developing Probability Estimates to Evaluate the Adequacy of an APF of 10." by W.R. Myers and Z. Zhuang, Am. Ind. Hyg. Assoc. J. 59, 796-801 (1998)." unpublished(2004).
2004 – Computer program (Breakthrough) for the second predictive model and a tutorial for it was distributed by NIOSH and posted on the OSHA web site for downloading (since replaced by MultiVapor).
2004 (midyear) – Retired from the Los Alamos National Laboratory and began independent consulting and research for the CDC/NIOSH National Personal Protective Technology Laboratory, Pittsburgh.
2005 – Third predictive model published. Computer program (GasRemove) written to apply it. (see Computer Programs page for download).
G.O. Wood, “Estimating Service Lives of Air-Purifying Respirator Cartridges for Reactive Gas Removal,” Journal of Occupational and Environmental Hygiene 2, 414-423 (2005).
2005 – Fourth predictive model completed. Computer program (MultiVapor) written and distributed by NIOSH for beta testing. Tutorial prepared.
2006 – Downloadable version of the MultiVapor, all-humidity, organic vapor respirator service life estimation program and tutorial set up on the CDC/NIOSH/ NPPTL web site with a link on the OSHA web site: http://www.cdc.gov/niosh/npptl/multivapor/multivapor.html
2006 – Awarded the Edward J. Baier Technical Achievement Award by the American Industrial Hygiene Association.
2007 – Fourth predictive model published.
G.O. Wood and J.L. Snyder, “Estimating Service Lives of Organic Vapor Cartridges III: Multiple Vapors at All Humidities,” Journal of Occupational and Environmental Hygiene 4, 363-374 (2007).
2007 – Online version of MultiVapor published (now available only on this web site, GerryOWood.com).
2008 – Awarded the 2008 Hyatt Award by the International Society for Respiratory Protection for Outstanding Scientific/Technical Contributions in the Field of Respiratory Protection, Dublin, Ireland, September 2008.
2009 – Parameters for MultiVapor developed.
G.O. Wood, "D-R Plots and Typical Parameters for Several OV and Multigas Cartridges and Canisters," Journal of the International Society for Respiratory Protection 26, 71-81 (2009).
2011 – Fifth predictive model published.
G.O. Wood and J.L. Snyder, “Estimating Reusability of Organic Air-Purifying Respirator Cartridges,” Journal of Occupational and Environmental Hygiene 8, 609-617 (2011).
2012 - Prepared a version of MultiVapor with IBUR estimation
IBUR = Immediate Breakthrough Upon Reuse for reusability estimation (see Computer Programs page for download).
2013 – Guidance documents completed for EPA.
Anjali Lamba and Gerry O. Wood, "EPA Guidance for Determining Organic Vapor Cartridge Service for NIOSH Approved Respirators," presented at the 2014 American Industrial Hygiene Conference and Exhibition, San Antonio, TX, (June 2014).
Gerry O. Wood and Anjali Lamba, "Correlating and Extrapolating Air-Purifying Respirator Cartridge Breakthrough Times--A Critical Review," presented at the International Society for Respiratory Protection 17th International Conference, Prague, Czech Republic (September 2014).
2015 – Published review article.
G.O. Wood, "Correlating and Extrapolating Air-Purifying Respirator Cartridge Breakthrough Times--A Review," Journal of the International Society for Respiratory Protection 32, 23-36 (2015).
2017 – Published review article.
G.O. Wood, "Testing Air-Purifying Chemical Respirator Cartridges: A Review of Options," Journal of the International Society for Respiratory Protection 34 (1), 26-39 (2017).