海南省水产品中铅镉的污染状况分析

目的 测定海南省东西南北不同城市水产品中铅镉含量,了解水产品中铅镉污染状况并进行分析与评价.方法 用随机抽样的方法,采集鱼类、软体类、甲壳类和双壳类4类238份样品,用石墨妒原子吸收法测定水产品中铅镉含量,根据无公害食品水产品有毒有害物质限量标准等对金属含量进行分析.结果 海南省水产品中铅污染的范围在0.005 ～ 0.717 mg/kg,镉污染范围在0.100×10-3 ～ 0.648 mg/kg,含量低于国内各相关标准的限值,水产品中铅镉污染最高值均为双壳类.结论 海南省水产品铅镉的污染以中国、美国、澳大利亚和韩国的标准判断均处于安全范围内,按照欧盟的标准鱼类中的铅有超标现象,其余均为合格.

Analysis on contamination of lead and cadmium in aquatic products in Hainan Province

Objective To understand food contaminants of lead and cadmiumin aquatic products in different city of Hainan. Methods Using graphite furnace atomic absorption spectrometry to determine lead and cadmium in 238 aquatic products, including fish, molluscs, crustaceans and bivalve. Analysis of metal content was performed based on the limits of harmful substances in pollution-free food and aquatic products. Results The content of lead and cadmium in aquatic products of Hainan province was in the range of 0.005~0.717 mg/kg and 0.100×10^-3~0.648mg/kg, lower than the limits of relevant standards in China. The maximum contamination of aquatic products was observed in bivalves. Conclusions The contamination of lead and cadmium in aquatic products in Hainan was safe according to the standards of China, the United States, Australia and Korea. The content of lead in some fish exceeded the standard of EU while the other products were qualified.