« Previous AbstractCarbon Dioxide Concentrations and Temperatures within Tour Buses under Real-Time Traffic Conditions    Next AbstractDry ice-originated supercritical and liquid carbon dioxide extraction of organic pollutants from environmental samples »

Environ Sci Technol

Title:		Distribution of volatile organic compounds over a semiconductor Industrial Park in Taiwan
Author(s):		Chiu KH; Wu BZ; Chang CC; Sree U; Lo JG;
Address:		"Department of Natural Sciences, National Science Council, Taipei, Taiwan, Republic of China"
Journal Title:		Environ Sci Technol
Year:		2005
Volume:		39
Issue:		4
Page Number:		973 - 983
DOI:		10.1021/es049110m
ISSN/ISBN:		0013-936X (Print) 0013-936X (Linking)
Abstract:		"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"
Keywords:		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;
Notes:		"MedlineChiu, Kong-Hwa Wu, Ben-Zen Chang, Chih-Chung Sree, Usha Lo, Jiunn-Guang eng Research Support, Non-U.S. Gov't 2005/03/19 Environ Sci Technol. 2005 Feb 15; 39(4):973-83. doi: 10.1021/es049110m"