Concentration distributions of anthropogenic halocarbons over a metropolitan area

Jia Lin Wang, Chih Jong Chang, Yun Huin Lin

Research output: Contribution to journalArticlepeer-review

32 Scopus citations


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 (CC13F), CFC-113(CC12FCC1F2), and CC14 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 (CC12F2) and CH3CC13 were large and exhibited area dependence, implying significant usage.

Original languageEnglish
Pages (from-to)2391-2400
Number of pages10
Issue number10
StatePublished - Apr 1998


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