Apparatus for the thermal desorption of the solvents sampled by activated charcoal

Journal Article · Sun Mar 01 04:00:00 EST 1987 · Am. Ind. Hyg. Assoc. J.; (United States)

DOI:https://doi.org/10.1080/15298668791384616· OSTI ID:6530103

Cocheo, V; Bombi, G G; Silvestri, R

An apparatus for the thermal desorption of solvent vapors collected by adsorption on activated charcoal is described. The analytes are desorbed in a stream of an inert carrier gas and are accumulated in a reservoir, from which a fraction of the gaseous sample can be drawn for gas chromatographic analysis; the entire desorption cycle is controlled automatically by an electronic unit. The analysis can be repeated several times, and standards can be added to the sample in the reservoir through an injection port for identification and/or quantitation of desorbed compounds. Thirty-four solvents were tested individually and in mixtures; the desorption yields and the reproducibility of the yields are quite satisfactory when compared with the corresponding data for the NIOSH standard desorption technique, and are largely independent from the mixture composition, from the relative humidity of sampled air and from the concentration in the range usually observed in industrial hygiene practice.

• Research Organization: Fondazione Clinica del Lavoro, Padova, Italy
• OSTI ID: 6530103
• Journal Information: Am. Ind. Hyg. Assoc. J.; (United States), Journal Name: Am. Ind. Hyg. Assoc. J.; (United States) Vol. 48:3; ISSN AIHAA
• Country of Publication: United States
• Language: English

Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACTIVATED CARBON
ADSORBENTS
ADSORPTION
AIR POLLUTION
CARBON
DISPERSIONS
ELEMENTS
FLUIDS
GASES
INDOOR AIR POLLUTION
MIXTURES
NONMETALS
ORGANIC SOLVENTS
POLLUTION
SAMPLING
SOLVENTS
SORPTION
VAPORS