Monitoring Chlorofluorocarbons in Potential Source Regions in Eastern China
作者： Jiebo Zhen , Minmin Yang , Jie Zhou , Fengchun Yang , Tao Li
关键词:
摘要: Recent studies have indicated that Eastern China might be a potential source region of increased atmospheric chlorofluorocarbons (CFCs). To investigate this possibility, field measurement was carried out from October to December 2017 for identifying the ambient concentration levels representative trichlorofluoromethane (CFC-11), dichlorodifluoromethane (CFC-12), trifluorotrichloroethane (CFC-113), and tetrafluorodichloroethane (CFC-114) at residential municipal solid waste (MSW) landfills industrial sites in China. The mixing ratios CFCs were almost within 20% enhancements global background sites. highest observed MSW landfill Moreover, CFC-11 CFC-113 concentrations landfill, which service, two times higher than completed landfill. Mean 322 pptv CFC-11, 791 CFC-12, 91 CFC-113, 16 CFC-114 various those sites, but they obviously lower use. A poor intercorrelation between did not come same source. Higher measured study compared with indicates could an unintentional emission there are still substantial amounts being stored banks may discharge into atmosphere
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