水产品中镉的形态分析及其危害

镉是生物体非必需的微量有害元素之一。近年来，随着工业污染加剧，造成水生动物体内镉超标。镉残留时间长，能蓄积，可沿食物链转移，从而对人体健康造成威胁。水产品中的镉形态复杂，本文就镉污染来源、存在形态及不同形态对水产动物危害和其检测手段等做一综述。

Speciation analysis and hazards of cadmium in aquatic products

Cadmium （Cd） is a non -essential trace element for organism, and has strong toxicity at low concentrations. In recent years, cadmium in aquatic animals is excessive because of industrial pollution and the use of aquatic animals or their scraps as feed. Cadmium has a long residual time, and can be bioaccumulated through the food chain transfer, which is becoming a threat to the human health. An overview of pollution sources, the speciation, the different speciation hazards and detection methods about cadmium are described in this paper.