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| Distribution and potential PFAA pollution sources in farmland groundwater from Hainan Province |
| Received:September 05, 2017 Revised:December 21, 2017 |
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| KeyWord:perfluorinated acids (PFAAs);farmland groundwater;source analysis |
| Author Name | Affiliation | E-mail | | TAN Dong-fei | College of Land and Environment, Shenyang Agricultural University, Shenyang 110161, China
Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China | | | ZHANG Yan-wei | Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China | | | WANG Lu | Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China | | | XU Ya-ping | Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China | | | WANG Ji-shi | Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China | | | LIU Xiao-wei | Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China | xwliu2006@163.com |
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| Abstract: |
| Perfluoroalkyl acids(PFAAs) are a type of persistent organic pollutants(POPs), and are of interest to many scientists. In this paper, 21 kinds of PFAAs including perfluorooctanoic acid(PFOA) and perfluorooctane sulfonates(PFOS) were detected using solid phase extraction(SPE) and high performance liquid chromatography tandem mass spectrometry(HPLC-MS/MS). Their concentrations and distributions were analyzed, and the potential pollution sources for PFAAs were investigated using SPSS. The results showed that PFAA pollution occurred in farmland groundwater from Hainan Province. The main pollutants were PFPrA, PFBA and PFOA, and the total concentration of PFAAs ranged from 0.85 ng·L-1 to 49.62 ng·L-1. The city of Lingnan and Sanya had the highest level, which were located in southern area of Hainan Province where there are hills and tablelands. These areas were mainly dominated by tropical agriculture. Atmosphere deposition was an important source pollution mechanism. Furthermore, it was the first time that the ultra short chain PFPrA was detected in Hainan farmland groundwater where it was one of the main pollutants in the groundwater. This result is important and needs further research. |
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