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| Risk assessment of cadmium residues in animal seafood in Wenzhou |
| CHEN Sheng, GAO Si-hai, LIN Dan, CAI Yuan-yuan, SHAN Ruo-qing, WANG Li-li
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| Wenzhou Center for Disease Control and Prevention,Wenzhou,Zhejiang 325001,China |
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Abstract Objective To explore the residual level of cadmium in animal seafood in Wenzhou,and to evaluate the health risk of cadmium pollution in animal seafood. Methods From April to October 2016,385 animal seafood were collected from the supermarkets and agricultural markets in 8 counties（cities and districts）such as Lucheng,Longwan and Ouhai in Wenzhou by multi-stage stratified random sampling method,then the cadmium content was tested. Combined with the data of residents' consumption in Wenzhou,the point estimate was used to evaluate the health risk of cadmium exposure by eating animal seafood in Wenzhou population. Results Among the 385 animal seafood,there were 195 marine fish,100 marine crustaceans and 90 marine molluscs. The median cadmium content in animal seafood was 0.011 mg/kg. The cadmium was detected in 302 samples,with the detection rate of 78.44%. The cadmium content exceeded the standard in 33 samples,and the exceeding standard rate was 8.57%. The cadmium content of crustacean and mollusc were higher than that of marine fish（P<0.016 7）. Single factor pollution index of cadmium was ≥ 1.0 in 2 marine fish,32 crustaceans and 4 molluscs,with the proportion of 1.03%,32.00% and 4.44%,respectively,and the difference was statistically significant（P<0.05）. The median cadmium exposure and the cadmium exposure in the high- consumers of animal seafood in Wenzhou were 2.36 μg/kg bw and 7.536 μg/kg bw,which were less than provisional tolerable monthly intake of cadmium in food regulated by Joint FAO /WHO Expert Committee on Food Additives. Conclusion Wenzhou residents have lower levels of cadmium exposed by eating animal seafood and thus lower health risk.
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Published: 22 May 2018
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