Identification, Tissue Distribution, and Bioaccumulation Potential of Cyclic Perfluorinated Sulfonic Acids Isomers in an Airport Impacted Ecosystem.
The use of cyclic perfluoroalkyl acids as anticorrosive agents in hydraulic fluids remains a poorly characterized source of organofluorine compounds to the environment. Here, we investigated the presence of perfluoroethylenecyclohexanesulfonate (PFECHS) isomers in environmental samples for the first time using a combination of high resolution and tandem mass spectrometry. Five distinct peaks attributed to different isomers of PFECHS and perfluoropropylcyclopentanesulfonate (PFPCPeS) were identified in environmental samples. The sum of PFECHS and PFPCPeS isomers displayed logarithmically decreasing spatial trends in water (1.04-324 ng/L) and sediment samples (<MLQ - 2.23 ng/g dw) with increasing distance from Beijing international airport. PFECHS and PFPCPeS displayed the highest accumulation in liver, kidney, blood and bladder and average whole body bioaccumulation factors (log BAFwhole-body) were estimated to be 2.7 and 1.9 respectively. Isomer-specific differences in the tissue/blood distribution ratios and BAFwhole-bodyindicate that ring structure and position of the sulfonic acid group affect the bioaccumulation potential of cyclic perfluoroalkyl acids. Based on the high mobility and moderate bioaccumulation potential of cyclic perfluorinated acids it is suggested that contamination of aquifers used for drinking water around airports may be a hitherto overlooked problem for this novel class of contaminants.
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Science, University of Chinese Academy of Sciences , Beijing 100085, China.|University of Chinese Academy of Sciences , Beijing 100049, China.
Yuan
Y
Wang
Department of Environmental Science and Analytical Chemistry (ACES), Stockholm University , Stockholm SE 10691, Sweden.
Robin
R
Vestergren
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Science, University of Chinese Academy of Sciences , Beijing 100085, China.
Yali
Y
Shi
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Science, University of Chinese Academy of Sciences , Beijing 100085, China.
Dong
D
Cao
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Science, University of Chinese Academy of Sciences , Beijing 100085, China.
Lin
L
Xu
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Science, University of Chinese Academy of Sciences , Beijing 100085, China.|Institute of Environment and Health, Jianghan University , Wuhan 430056, China.|University of Chinese Academy of Sciences , Beijing 100049, China.
Yaqi
Y
Cai
State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences , Beijing 100012, China.
Xiaoli
X
Zhao
State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences , Beijing 100012, China.
Fengchang
F
Wu
D059028:Airports; D017753:Ecosystem; D013451:Sulfonic Acids / Q000737:chemistry*; D014018:Tissue Distribution; D014874:Water Pollutants, Chemical
D013451:Sulfonic Acids; D014874:Water Pollutants, Chemical