上海市垂钓鱼重金属污染特征与食用安全性

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Abstract Eighty-seven wild game fishes in 7species were collected from six fishing sites with different environmental characteristics in Shanghai in 2015. After sample preparation, 8kinds of heavy metals were analyzed by using inductively coupled plasma mass spectrometry (ICP-MS) and DMA-80direct mercury analyzer. And then the occurrence, pollution status of heavy metals in game fishes and the fish consumption safety were discussed. The results showed that the concentrations of heavy metals in fish muscles ranged as followed:Cr 0.24~2.68mg/kg (wet weight, the same below); As below 0.47mg/kg; Cd less than 0.31mg/kg; Pb less than 1.43mg/kg; Hg 0.02~0.42mg/kg; Ni 0.01~0.89mg/kg; Cu 0.15~12.30mg/kg; Zn 4.3~85.7mg/kg. Cr, Cd, Pb and Hg in 20% of fish samples exceeded the limits of food/aquatic products quality and safety standards. The contamination of heavy metals was severe in P. asotus and P. fulvidraco, followed by carp and bass, slightly occurred in grass carp and crucian carp, but not presented in Pseudorasbora parva. The contamination of heavy metals in game fishes was much heavier in industrial zone, followed by urban river, and lower in wetland park. Overall, the concentrations of heavy metals in most game fishes were covered in the acceptable range for fish consumption safety, but the intakes of Cr from P. asotus, P. fulvidraco, bass and carp would be close to or even exceed the provisional tolerable weekly intake (PTWI), indicating a higher risk for health. The Hg intake from P. asotus was close to or even more than half of the PTWI value, indicating a risk to some extent.

Key words： game fishes heavy metals chromium consumption safety Parasilurus asotus Pelteobagrus fulvidraco

Received: 24 May 2016

PACS:

X171.5

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	Articles by authors
	ZHANG Fei-fei
	YANG Shan-qing
	XU Yan-ping
	ZHOU Zheng
	HUANG Qing-hui

Cite this article:

ZHANG Fei-fei,YANG Shan-qing,XU Yan-ping等. Contamination of heavy metals in game fishes in Shanghai and fish consumption safety assessment[J]. CHINA ENVIRONMENTAL SCIENCECE, 2017, 37(2): 754-760.

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http://manu36.magtech.com.cn/Jweb_zghjkx/EN/ OR http://manu36.magtech.com.cn/Jweb_zghjkx/EN/Y2017/V37/I2/754

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