Spatial and temporal distribution characteristics of synthetic musk in Suzhou Creek |
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| Authors: | Feng-ling Wang Ying Zhou Ya-wen Guo Li-yin Zou Xiao-lan Zhang Xiang-ying Zeng |
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| Institution: | 1. School of Environmental and Chemical Engineering,Shanghai University,Shanghai 200444,P.R.China
2. State Key Laboratory of Organic Geochemistry,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,P.R.China |
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| Abstract: | Contamination levels and distribution of seven synthetic musks in Suzhou Creek were investigated in this study.Two polycyclic musks,1,3,4,6,7,8-hexahydro-4,6,6,7,8,8-hexamethylcyclopenta(g)-2-benzopyran(HHCB)and 7-acetyl-1,1,1,3,4,4,6-hexamethyl-1,2,3,4-tetrahydronaphthalene(AHTN),were found in all samples.The ranges of HHCB and AHTN were from 8 ng/L to 138 ng/L and from 1 ng/L to 25 ng/L in surface waters,and from 2 ng/g to 77 ng/g(dry weight)and from 1 ng/g to 31 ng/g(dry weight)in sediments respectively.The total concentration of HHCB and AHTN showed obvious spatial change in surface waters: the upper reaches(suburb)13 less than the lower course(urban area); and in sediments,the musk levels were also higher in urban area.The distribution pattern also showed seasonaly varied characteristics both in surface waters and sediments.The distribution coefficient(Kp)and standardized distribution coefficient(Koc)were calculated through musk concentrations and octanol-water partition coefficient(Kow).The results showed that AHTN was more easily absorbed in sediments.The adsorption of musk was increased with the increasing of total organic carbon(TOC)in Suzhou Creek.The significant positive correlation of HHCB and AHTN was found in this study,which indicated the same pollution source: the use and discharge of flavoring substances. |
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| Keywords: | musk Suzhou Creek surface waters sediments |
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