Large volume sampling without preconcentration for continuous gas chromatography

Conference · Sat Aug 01 04:00:00 EDT 1981 · Am. Soc. Test. Mater., Spec. Tech. Publ.; (United States)

OSTI ID:6243194

Phillips, J B; Carle, G C; Valentin, J R

A milligram quantity of adsorbent material was placed at the head of a gas chromatographic column. The initial part of the column itself served as this adsorbent in some experiments. A continuously flowing gaseous sample was passed through a length of narrow bore metal tubing, the precolumn adsorbent, and the gas chromatographic column. A computer generated signal heated the metal tubing which heated the sample gas stream and the precolumn adsorbent. The changing adsorbent temperature generated a changing concentration of adsorbable substances in the gas stream. Thus, the computer generated a chemical concentration signal usable for chromatographic analysis. This technique is related to chromatographic analysis using preconcentration but has several important advantages.

• Research Organization: Department of Chemistry and Biochemistry, Southern Illinois University, Carbondale, IL
• OSTI ID: 6243194
• Report Number(s): CONF-810849-
• Conference Information: Journal Name: Am. Soc. Test. Mater., Spec. Tech. Publ.; (United States) Journal Volume: STP-786
• Country of Publication: United States
• Language: English

Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ADSORBENTS
ADSORPTION
AIR POLLUTION MONITORING
AIR POLLUTION MONITORS
CHROMATOGRAPHY
ECOLOGICAL CONCENTRATION
EQUIPMENT
GAS CHROMATOGRAPHY
MEASURING INSTRUMENTS
MONITORING
MONITORS
SAMPLERS
SAMPLING
SEPARATION PROCESSES
SORPTION