期刊
ENVIRONMENTAL SCIENCE & TECHNOLOGY
卷 52, 期 3, 页码 1301-1310出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.est.7b05385
关键词
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资金
- National Natural Science Foundation of China [41603101, 41573097, 41225014]
- Ministry of Education of China [20130031110027, IRT13024, T2017002]
A total of 23 per- and polyfluoroalkyl substances (PFASs) were investigated in the air, dry deposition, and plant leaves at two different landfills and one suburban reference site in Tianjin, China. The potential of landfills as sources of PFASs to the atmosphere and the phase distribution therein were evaluated. The maximum concentrations of Sigma PFASs in the two landfills were up to 9.5 ng/m(3) in the air, 4.1 mu g/g in dry deposition, and 48 mu g/g lipid in leaves with trifluoroacetic acid and perfluoropropionic acid being dominant (71%-94%). Spatially, the distribution trend of ionizable and neutral PFASs in all three kinds of media consistently showed the central landfill > the downwind > the upwind > the reference sites, indicating that landfills are important sources to PFASs in the environment. Plant leaves were found effective in uptake of a variety of airborne PFASs including polyfluoroalkyl phosphoric acid diesters, thus capable of acting as a passive air sampling approach for air monitoring.
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