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| Pollution characteristics and ecological risk assessment of chlorpyrifos in Taihu Lake |
| Received:July 05, 2016 |
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| KeyWord:Taihu Lake;chlorpyrifos;ecological risk assessment;the method of safety threshold value |
| Author Name | Affiliation | E-mail | | CAO Ying | State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China | | | ZHANG Ya-hui | State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China | zhangyahui@craes.org.cn | | YAN Zhen-guang | State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China | | | ZHU Yan | College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China | | | LIU Zheng-tao | State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China | |
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| Abstract: |
| To investigate the pollution and evaluate the ecological risk of chlorpyrifos in Taihu Lake, 37 water samples were collected in August 2014. The levels of chlorpyrifos were determined. The concentrations of chlorpyrifos were determined using the solid phase extraction(SPE) and gas chromatography-mass spectrometry(GC-MS). The concentration of chlorpyrifos ranged from ND(no detection) to 13.6 ng·L-1 with average of 4.8 μg·L-1. The method of safety threshold value was employed to assess the ecological risk of chlorpyrifos in the water body of Taihu Lake. The value of MOS10 was less than 1(0.16), indicating that chlorpyrifos in Taihu has posed ecological risk to some aquatic organisms. Using the acute data in the method of safety threshold value, in about 13.2% of the Taihu Lake waters more than 5% of the aquatic organisms were affected by chlorpyrifos, and the maximum allowable concentration was 0.036 μg·L-1. This would provide a scientific basis for the ecological risk of chlorpyrifos in Taihu Lake. |
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