Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Feasibility Study of a Pocket-Sized Gas Chromatographic Air Analyzer.
Author Terry, Stephen C. ; Jerman, John H. ;
CORP Author Stanford Univ., CA. Stanford Electronics Labs.;Environmental Protection Agency, Washington, DC. Office of Energy, Minerals and Industry.;National Inst. for Occupational Safety and Health, Cincinnati, OH.
Year Published 1977
Report Number SU-SEL-77-027; PHS-NIOSH-210-76-0140; EPA/600/7-77/146;
Stock Number PB80-118946
Additional Subjects Gas detectors ; Gas chromotography ; Chemical dosimeters ; Design ; Performance evaluation ; Concentration(Composition) ; Industrial hygiene ; Monitoring ; Exposure ; Gas analysis ; Chemical analysis ; Air pollution ; Feasibility ; Indoor air pollution ; State of the art
Library Call Number Additional Info Location Last
NTIS  PB80-118946 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 116p
The feasibility of producing a pocket-sized air contaminant monitor based upon a miniature gas chromatograph and an integrated microcomputer has been demonstrated and a practical design for the instrument is presented. This pocket-sized instrument is intended to be used as a personal exposure monitor which is unobtrusively carried by an industrial worker throughout the day. The proposed instrument is fully self-contained in an 8 cm x 4 cm x 15 cm package weighing approximately 0.6 kg. It is build around a miniature integrated gas chromatograph (GC) consisting of a capillary column, a sample injection valve, and detector. A state-of-the-art integrated circuit microcomputer is included in the instrument to handle control and data processing functions. The proposed instrument will be capable of sampling the atmosphere automatically once a minute for eight hours, measuring the concentrations of up to 10 different vapors simultaneously to within 10% accuracy, calculating and storing the time-weighted-average and peak concentrations for each of the gases, measuring concentrations at the 10 ppm level, displaying any of the stored concentrations upon demand, and sounding an alarm when any concentration exceeds a predetermined value. The desirable features of this instrument -- its small size, automatic operation, and ability to monitor multiple gases -- should make it a useful analytical tool and of significant use in the fields of industrial hygiene and occupational safety.