Multi-stage preconcentrator/focuser module designed to enable trace level determinations of trichloroethylene in indoor air with a microfabricated gas chromatograph
| Autor: | Thitiporn Sukaew, Edward T. Zellers, Gustavo Serrano, Hungwei Chang |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Microheater
Volatile Organic Compounds Chromatography Chromatography Gas Chemistry Detector Analytical chemistry Biochemistry Carbon Analytical Chemistry Volumetric flow rate Trichloroethylene Adsorption Desorption Torr Air Pollution Indoor Vapor intrusion Electrochemistry Pressure Environmental Chemistry Gas chromatography Gases Spectroscopy |
| Zdroj: | The Analyst. 136(8) |
| ISSN: | 1364-5528 |
| Popis: | This article describes the development and characterization of a multi-stage preconcentrator/focuser (PCF) module designed to be integrated with a microfabricated gas chromatograph (µGC) for autonomous, in situ determinations of volatile organic compounds. The PCF module has been optimized specifically for the determination of trichloroethylene (TCE) vapors at low- or sub-parts-per-billion concentrations in the presence of common indoor air co-contaminants in residences at risk of vapor intrusion (VI) from surrounding TCE-contaminated soil. It consists of three adsorbent-packed devices arranged in series: a pre-trap of conventional (tubular metal) design for capturing interferences with vapor pressures |
| Databáze: | OpenAIRE |
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