Persistent organic pollutants in water and surface sediments of Taihu Lake, China and risk assessment.
Organic pollutants, especially persistent organic pollutants were examined in the water and surface sediments of Taihu Lake, China. Both 12 water and 12 sediment samples were collected over the lake. C-18 solid-phase extraction technique was applied to extract organic pollutants in collected water samples. Soxhlet extraction procedure was used to extract organic pollutants in sediment samples. The analysis was performed by GC-MS controlled by a Hewlett Packard chemstation. Two hundred and seventy-three kinds of organic chemicals in water were examined, 200 more than that detected in 1985; 188 kinds of chemicals in sediments were detected as well. Among them 21 kinds of chemicals belong to priority pollutants as well as 17 kinds to be the endocrine disruptors. The concentrations of the pollutants were more than 2 times higher than that in 1985. The possible source and relation to anthropogenic activity were discussed.
Wang
Hai
H
State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China.
Wang
Chunxia
C
Wu
Wenzhong
W
Mo
Zheng
Z
Wang
Zijian
Z
D002681:China; D008401:Gas Chromatography-Mass Spectrometry; D019015:Geologic Sediments / Q000737:chemistry*; D009930:Organic Chemicals / Q000009:adverse effects* / Q000032:analysis*; D018570:Risk Assessment; D014874:Water Pollutants, Chemical / Q000009:adverse effects* / Q000032:analysis*
D009930:Organic Chemicals; D014874:Water Pollutants, Chemical