Chi Qiao-qiao, Zhu Guang-wei, Alan Langdon
Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China.
J Environ Sci (China). 2007;19(12):1500-4. doi: 10.1016/s1001-0742(07)60244-7.
The Cr, Zn, Cu, Cd, Pb contents were determined in Cyprinus carpio Linnaeus, Carassius auratus Linnaeus, Hypophthalmichthys molitrix and Aristichthys nobilis, which were caught from Meiliang Bay, Taihu Lake, a large, shallow and eutrophic lake of China. The results showed that: (1) the Cr, Cu, Pb, Cd contents in the edible parts of the four fish species were much lower than Chinese Food Health Criterion (1994), but the Zn contents were higher than the Criterion; (2) Cd contents were the highest in the liver of fish, Pb contents were almost the same in all organs of fish, Cr contents mainly enriched in the skin and gonads, Zn contents were the highest in the gonad (female), and Cu contents were the highest in the liver; (3) the total metal accumulation was the greatest in the liver and the lowest in the muscle. The total metal accumulation was the highest in C. auratus L. This investigation indicated that fish products in Taihu Lake were still safe for human consumption, but the amount consumed should be controlled under the Chinese Food Health Criterion to avoid excessive intake of Zn.
测定了采自中国大型浅水富营养湖泊太湖梅梁湾的鲤（Cyprinus carpio Linnaeus）、鲫（Carassius auratus Linnaeus）、鲢（Hypophthalmichthys molitrix）和鳙（Aristichthys nobilis）体内的铬（Cr）、锌（Zn）、铜（Cu）、镉（Cd）、铅（Pb）含量。结果表明：（1）4种鱼类可食部位的Cr、Cu、Pb、Cd含量均远低于中国食品卫生标准（1994），但Zn含量高于该标准；（2）鱼类肝脏中Cd含量最高，各器官中Pb含量相近，Cr主要富集于皮肤和性腺，性腺（雌性）中Zn含量最高，肝脏中Cu含量最高；（3）金属总蓄积量在肝脏中最大，在肌肉中最低。鲫的金属总蓄积量最高。本研究表明，太湖鱼类产品对人类食用仍属安全，但食用量应控制在中国食品卫生标准以下，以避免过量摄入Zn。
