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EVALUATION OF PORTABLE MULTISORBEN AIR SAMPLERS FOR USE WITH AN AUTOMATED MULTITUDE ANALYZER
Citation:
Pollak, A., S. Gordon, AND D. Moschandreas. EVALUATION OF PORTABLE MULTISORBEN AIR SAMPLERS FOR USE WITH AN AUTOMATED MULTITUDE ANALYZER. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/R-93/053.
Description:
The objective of this study was to evaluate the operational characteristics of the Perkin-Elmer Model STS 25 Sequential Tube Sampler and IITRI/IIT (IIT Research Institute/Illinois Institute of Technology) Total Isolated-by-Microenvironment Exposure (TIME) monitor. Both units use multisorbent carbon-based sampling tubes to collect volatile organic compounds (VOC'S) in ambient air and a analytical procedure that does not require cryogens for analysis. A Perkin Elmer Auto Thermal Desorption System (Model ATD 400) was used to process the collection tubes for analyses of the target species (VOC's listed in the EPA TO-14 method). The Model STS 25 is designed to sample air with up to 24 tubes, one at a time for a preset period of time. The TIME monitor is designed to measure total exposure to volatile organics and apportion the exposure into its microenvironmental components indoor (workplace/residential), outdoor or in-transit. The TIME unit uses ultrasound reflection to identify a subject's location. Very good precision for collection and analysis of these volatile organic compounds was achieved. Details of the study are presented along with recommendations for further evaluation and developmental efforts for these samplers and the sorbent/ analytical methodology.