Document Detail


Distribution of volatile organic compounds over a semiconductor Industrial Park in Taiwan.
MedLine Citation:
PMID:  15773468     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
This study examined volatile organic compounds (VOC) concentration in ambient air collected during the years 2000--2003 at several different locations of Hsinchu Science-based Industrial Park (HSIP) in Taiwan. A canister automated GC-MS system analyzed the volatile organics in ambient air grasp samples according to T0-15 method. Oxygenated volatiles were the most abundant VOC detected in HSIP followed by aromatics that are commonly used as solvents in the semiconductor industries. The major components measured in the ambient air are 2-propanol (29-135 ppbv), acetone (12-164 ppbv), benzene (0.7-1.7 ppbv), and toluene (13-20 ppbv). At some of the sampling locations, odorous compounds such as carbon disulfide and dimethyl sulfide levels exceed threshold values. The estimated toluene/benzene ratio is very high at most of the sites. However, the total amount of VOC is reduced over the years from 2000 to 2003 due to strict implementation on use and discharge of solvents in industries. There exists no definite seasonal pattern for sporadic occurrence of high levels of some of the volatile organics. Stagnant weather conditions with low wind speeds aid accumulation of toxic species at ground level. The results entail that hi-tech semiconductor industries are still a potential source for harmful organic substances to surrounding microenvironment.
Authors:
Kong-Hwa Chiu; Ben-Zen Wu; Chih-Chung Chang; Usha Sree; Jiunn-Guang Lo
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Environmental science & technology     Volume:  39     ISSN:  0013-936X     ISO Abbreviation:  Environ. Sci. Technol.     Publication Date:  2005 Feb 
Date Detail:
Created Date:  2005-03-18     Completed Date:  2005-06-17     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0213155     Medline TA:  Environ Sci Technol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  973-83     Citation Subset:  IM    
Affiliation:
Department of Natural Sciences, National Science Council, Taipei, Taiwan, Republic of China.
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MeSH Terms
Descriptor/Qualifier:
2-Propanol / analysis
Acetone / analysis
Air Pollutants / analysis*
Benzene / analysis
Environmental Monitoring*
Gas Chromatography-Mass Spectrometry
Industry
Organic Chemicals / analysis*
Seasons
Semiconductors
Taiwan
Toluene / analysis
Volatilization
Weather
Chemical
Reg. No./Substance:
0/Air Pollutants; 0/Organic Chemicals; 108-88-3/Toluene; 67-63-0/2-Propanol; 67-64-1/Acetone; 71-43-2/Benzene

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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