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| Heavy metals content of pond aquaculture products in Yangtze River Delta and the health risk associated with human consumption |
| Received:December 13, 2016 |
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| KeyWord:heavy metals;cultured ponds;aquaticulture products;health risk assessment;Yangtze River Delta |
| Author Name | Affiliation | E-mail | | HE Qing | Shanghai Collaborative Innovation Center for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai Ocean University College of Marine Ecology and Environment, Shanghai 201306, China | | | PENG Zi-ran | Shanghai Collaborative Innovation Center for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai Ocean University College of Marine Ecology and Environment, Shanghai 201306, China | | | ZHANG Chen | Shanghai Collaborative Innovation Center for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai Ocean University College of Marine Ecology and Environment, Shanghai 201306, China | | | YANG Feng-yuan | Shanghai Collaborative Innovation Center for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai Ocean University College of Marine Ecology and Environment, Shanghai 201306, China | | | LI Juan-ying | Shanghai Collaborative Innovation Center for Aquatic Animal Genetics and Breeding, Shanghai Ocean University, Shanghai Ocean University College of Marine Ecology and Environment, Shanghai 201306, China | jyli@shou.edu.cn |
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| Abstract: |
| This study aimed to investigate the content of heavy metals in pond aquaticulture products in the Yangtze River Delta and the health risk associated with human consumption. Thirteen kinds of aquaticulture products that belong to five categories were collected from 13 ponds located in Shanghai, Jiangsu and Zhejiang from May to November in 2015 and analyzed for heavy metals. The results showed that while the levels of Cr and As in the aquaticulture products were quite low, the levels of Cu and Pb at 60% sample points and the levels of Cd in almost all samples exceeded the guideline on aquatic product. Besides, and the concentration of heavy metals in benthic was higher than those in fish. Provisional tolerable weekly intake(PTWI) and health risk assessment were then used to evaluate the food safety and the health risks. The AWI/PTWI of Cu, Pb, Cr and As were found all less than 100%, but the AWI/PTWI of Cd was much more than 100%: the risk of nearly half of the aquaticulture products was found exceeded the guideline for human beings, and the risk was mainly contributed by the heavy metals of Cu and Cd. Among the studied aquaticulture species, the overall health risk of fish was lower than that of the benthic. The heavy metals Cd,Cr and As in aquaticulture products from Yangtze River Delta were suggested to be closely related to the contamination of heavy metals in the sediment of the ponds. |
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