Determination of volatile organic compounds in workplace air by multisorbent adsorption/thermal desorption-GC/MS

Investigation of volatile organic compounds (VOCs) was first conducted in the air of class-100 cleanrooms at liquid crystal display (LCD) fabrication facilities. Air samples were collected on multisorbent tubes (including Carbopack B, Carbopack C, and Carbosieve S-III) and analyzed using adsorption/...

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Bibliographic Details
Published in:Chemosphere (Oxford) 2004-07, Vol.56 (1), p.71-80
Main Authors: Wu, Chien-Hou, Feng, Chien-Tai, Lo, Yu-Shiu, Lin, Tsai-Yin, Lo, Jiunn-Guang
Format: Article
Language:English
Subjects:
Adsorption
Air analysis
Air Pollutants, Occupational - analysis
Analysis methods
Applied sciences
Atmospheric pollution
Environment, Controlled
Environmental analysis
Environmental Monitoring - methods
Exact sciences and technology
Gas chromatography
Gas Chromatography-Mass Spectrometry
Indoor pollution and occupational exposure
Industry
Multisorbent adsorption
Organic Chemicals - analysis
Pollution
Reproducibility of Results
Temperature
Time Factors
Volatile organic compounds
Volatilization
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Summary:Investigation of volatile organic compounds (VOCs) was first conducted in the air of class-100 cleanrooms at liquid crystal display (LCD) fabrication facilities. Air samples were collected on multisorbent tubes (including Carbopack B, Carbopack C, and Carbosieve S-III) and analyzed using adsorption/thermal desorption coupled with gas chromatography–mass spectrometry (GC–MS). Optimal conditions lead to average recoveries in the range of 96.2–98.2%, and method detection limits between 0.38 and 0.78 ppb, under the condition of 1-l sampling volume and 80% relative humidity. The method appears to be accurate, sensitive, simple and well-suited for determining VOC distributions from various stages of LCD manufacturing process and temporal variations of the analyte concentrations. About 15 VOCs were identified in workplace air. The major pollutants such as propylene glycol methyl ether acetate (PGMEA), butyl acetate, and acetone that are commonly used in the opto-electronics industry were detected and accurately quantified with the established method.
ISSN:0045-6535
1879-1298
DOI:10.1016/j.chemosphere.2004.02.003