Concentration distributions of anthropogenic halocarbons over a metropolitan area

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/28377

Title:	Concentration distributions of anthropogenic halocarbons over a metropolitan area
Authors:	Wang,JL;Chang,CJ;Lin,YH
Contributors:	中央大學
Keywords:	OZONE DEPLETION;LIFETIME
Date:	1998
Issue Date:	2010-06-29 19:47:26 (UTC+8)
Publisher:	化學研究所
Abstract:	A method coupling trace gas analysis with air sampling was employed to examine relative emission strengths of several regulated halocarbons. A total of 51 air samples were taken in a random manner throughout the Taipei metropolitan area within one hour period. Several background air samples were also collected on the east coast of Taiwan to provide baseline conditions. The concentrations of CFC-11 (CCl3F), CFC-113(CCl2FCClF2), and CCl4 throughout the city were found to be uniform and close to the background levels, suggesting emissions were insignificant. By contrast, the variability in concentrations for CFC-12 (CCl2F2) and CH3CCl3 were large and exhibited area dependence, implying significant usage. (C) 1998 Elsevier Science Ltd. All rights reserved.
Relation:	CHEMOSPHERE
Appears in Collections:	[Graduate Institute of Chemistry] journal & Dissertation

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