LIU Baolin1,2,3, ZHANG Hong1, XIE Liuwei1, WANG Yanping2, WANG Xinxuan2
(1. College of Physics Science and Technology, Shenzhen University, Shenzhen 518060, China;
2.College of Food Engineering and Biotechnology, Tianjin University of Science and Technology, Tianjin 300222, China;
3. College of Chemistry, Changchun Normal University, Changchun 130021, China)
Abstract: In order to explore the spatial distribution and potential source of perfluorinated compounds (PFCs), 19 surface soils samples were collected along theDongjiang River in August, 2013. The levels of 16 individual PFCs were quantified by high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). Results show that total concentrations of PFCs (∑PFCs) range from 2.15 to 5.49 μg/kg dry weight (dw). The ∑PFCs concentrations in soils from Dongguan section are significantly higher than those of Huizhou section around the Dongjiang River. Perfluorooctane sulfonate (PFOS) whose concentration ranging from 0.65 to 1.28 μg/kg dwis the dominant PFC contaminant. Compared with other regions in China, the ∑PFCs concentrations in soils around theDongjiang River are relatively high, which could be relative to industrial structure and economic activity. Additionally, principal component analysis (PCA) model was employed to quantitatively calculate the contribution of extracted sources. The manufacturing of electroplating antifoggants, food packing and perfluoroalky carboxylates, atmospheric deposition and electrochemical fluorination are the three main source categories for PFCs in soils around the Dongjiang River. Relevant research between PFCs concentrations and soil total organic carbon shows that PFCs are more easily distributed in the soil with higher organic matter content, which would be more significant with the increases of PFCs chains.
Key words: perfluorinated compound; the Dongjiang River; surface soil; spatial distribution; source appointment
EARTH AND ENVIRONMENT Vol. 43, No.3, Tot No.305, 2015, Page 302-307
