郑州黄河南岸养殖鱼类肌肉中重金属残留特征

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Abstract In order to understand the residue characteristics of heavy metals in cultured fish muscles from the south bank of the Yellow River in Zhengzhou, 133 samples of cultured fish muscles were collected. Residues of Pb, Cr, Cd, Cu, Zn, Hg and As were respectively measured by Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) and Liquid Chromatography-Atomic Fluorescence Spectrometry (LC-AFS) methods. And then the characteristics of heavy metal residues were analyzed, and the risks of food safety hazards in fishes were evaluated by Target Hazard Quotient (THQ) methods. The results showed that Pb, Cr, Cd, Cu, Zn, Hg and As were detected in all of the 4fish species, but only 3elements of Pb, As and Cd exceeded the standard, with the over standard rates 13.53%, 12.78% and 4.51%. The coefficients of variation of heavy metals were between 0.13 and 0.37 with the moderate variations. The average residues of the heavy metals were significantly different, and the order from high to low was Zn > Cu > Cr > Pb > As > Hg > Cd. All of them were not exceed the maximum levels of contaminants in foods. Overall, the residues of heavy metals in Carassius auratus and Ctenopharyngodon idellus were higher than that in Cyprinus carpio and Hypophthalmichthys molitrix. The results of correlation analysis showed that residues in cultured fish in Zhengzhou section of south coast of the Yellow River had some similar sources, and may be mainly from the fish feed and medicines. THQ methods showed that the dietary risks of heavy metals intake in children were higher than that in adults, and the risks of heavy metals in different groups were not obvious. Among the 7 heavy metals, Hg, Cr and As were the main risk elements. So it seems that the pollution accumulation characteristics and effective controls of Hg, Cr and As should be well worth the further studies.

Key words： south bank of the Yellow River cultured fish species heavy metal residues Zhengzhou

Received: 03 November 2017

X171.5

Corresponding Authors: 张小磊,助理研究员,skyxlzhang@126.com E-mail: skyxlzhang@126.com

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	ZHANG Xiao-lei
	WANG Jing-jing
	ZHAO Yong-jiang
	YANG Liu

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ZHANG Xiao-lei,WANG Jing-jing,ZHAO Yong-jiang等. Residue characteristics of heavy metals in cultured fish muscles from the south bank of the Yellow River in Zhengzhou[J]. CHINA ENVIRONMENTAL SCIENCECE, 2018, 38(6): 2363-2370.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2018/V38/I6/2363

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