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Adsorption of Vapor Mixtures onto Activated Carbon.

PB95171104

Publication Date	1994
Personal Author	Breysse, P. N.; Robbins, C.
Page Count	102
Abstract	A method was developed for the study of the adsorption of one vapor in a mixture onto activated-carbon for use in the estimation of organic vapor respirator service life. It was possible to study the absorption of one vapor in the presence of a second vapor using methods developed with a dual flame ionization detector/photoionization detector without any interference from the second vapor. In the presence of polar and lower boiling point compounds, p-xylene appeared to have greater affinity for carbon than when in the presence of nonpolar higher boiling point compounds. The authors suggest that it may be possible to estimate the service life of a respirator for a vapor in a mixture using the carbon capacity for the vapor, and the mole fraction of the vapor in the mixture. Errors of 30% of more can be expected for vapors in the ranges of polarity, boiling point, and concentration tested.
Keywords	Occupational safety and health Activated carbon Chemical analysis Xylenes Adsorbents Respirators Medical equipment Chemical properties Vaporizing Organic compounds CAS 1330207
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	57U - Public Health & Industrial Medicine 68G - Environmental Health & Safety 99A - Analytical Chemistry
Corporate Authors	Johns Hopkins Univ., Baltimore, MD. School of Hygiene and Public Health.; National Inst. for Occupational Safety and Health, Cincinnati, OH.
Supplemental Notes	Sponsored by National Inst. for Occupational Safety and Health, Cincinnati, OH.
Document Type	Technical Report
NTIS Issue Number	199508
Contract Number	NIOSH-K01-OH-00087

Adsorption of Vapor Mixtures onto Activated Carbon.

Adsorption of Vapor Mixtures onto Activated Carbon.
PB95171104

Publication Date	1994
Personal Author	Breysse, P. N.; Robbins, C.
Page Count	102
Abstract	A method was developed for the study of the adsorption of one vapor in a mixture onto activated-carbon for use in the estimation of organic vapor respirator service life. It was possible to study the absorption of one vapor in the presence of a second vapor using methods developed with a dual flame ionization detector/photoionization detector without any interference from the second vapor. In the presence of polar and lower boiling point compounds, p-xylene appeared to have greater affinity for carbon than when in the presence of nonpolar higher boiling point compounds. The authors suggest that it may be possible to estimate the service life of a respirator for a vapor in a mixture using the carbon capacity for the vapor, and the mole fraction of the vapor in the mixture. Errors of 30% of more can be expected for vapors in the ranges of polarity, boiling point, and concentration tested.
Keywords	Occupational safety and health Activated carbon Chemical analysis Xylenes Adsorbents Respirators Medical equipment Chemical properties Vaporizing Organic compounds CAS 1330207
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	57U - Public Health & Industrial Medicine 68G - Environmental Health & Safety 99A - Analytical Chemistry
Corporate Authors	Johns Hopkins Univ., Baltimore, MD. School of Hygiene and Public Health.; National Inst. for Occupational Safety and Health, Cincinnati, OH.
Supplemental Notes	Sponsored by National Inst. for Occupational Safety and Health, Cincinnati, OH.
Document Type	Technical Report
NTIS Issue Number	199508
Contract Number	NIOSH-K01-OH-00087