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OLS Field Name OLS Field Data
Main Title Field-Deployable Monitors for Volatile Organic Compounds in Air. (Essential Capabilities of a Portable Gas Chromatograph).
Author Berkley, R. E. ;
CORP Author Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab.
Publisher 1993
Year Published 1993
Report Number EPA/600/A-93/085;
Stock Number PB93-185700
Additional Subjects Air pollution sampling ; Volatile organic compounds ; Field tests ; Quality control ; Errors ; Chemical analysis ; Portable equipment ; Gas chromatography ; Improvement ; Mass spectroscopy ; Feasibility studies ; Modulation ; Weathering ; Vulnerability ;
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
NTIS  PB93-185700 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 08/23/1993
Collation 14p
Abstract Volatile organic compounds in ambient air are usually estimated by trapping them from air or collecting whole air samples and returning them to a laboratory for analysis by gas chromatography using selective detection. Immediate data can be obtained, and sampling errors minimized, by analyzing with a field-deployable instrument at the time samples are collected. Portable gas chromatographs are available, but they don't fully meet the need for quick, high-quality data under field conditions. Shortcomings include insensitive detectors, non-selective detectors, poor resolution, retention time drift, maladroit data processing schemes, excessive energy consumption, and vulnerability to weather. Improved waterproofing, temperature regulation, and energy efficiency are particularly crucial to true field-deployability. Mass spectrometric detection, high-speed chromatography, polycapillary chromatography, and peak modulation may lead to useful enhancements in future.
Category Codes 68A; 99A
NTIS Prices PC A03/MF A01
Primary Description 600/09
Document Type NT
Cataloging Source NTIS/MT
Control Number 317525692
Origin NTIS
Type CAT