珠江口典型水产品中5种重金属的来源分析

The Source Identification of the 5 Heavy Metals in Typical Aquaculture of the Pearl River Estuary

对珠江口某典型水产品体内的重金属Cu、Zn、Pb、Cd和Cr含量检测表明,其体内尤其是头部的Cu明显超标。为了调查其原因,采集了其生长环境中的15个水样、16份底泥样品。采用原子吸收光谱法(AAS)分析水产品与底泥中的重金属含量,利用电感耦合等离子体质谱仪(ICP-MS)分析水样中的重金属含量。结果表明,水产品中超标的Cu与过高的Zn来自于其生长的水体环境,而根本原因是来自养殖过程投放的含铜消毒液与含锌饲料。

The investigation of the heavy metals of Cu, Zn, Pb, Cd and Cr in aquaculture of Pearl River Estuary showed that the Cu in the organism especially in the heads significantly exceeded the standards.In order to investigate the reasons of elevated heavy metal in aquaculture, 15 of water samples and 16 of sediments have been sampled and analyzed.The heavy metals in aquaculture and sediments were analyzed using atomic absorption spectrophotometer （AAS）while inductively coupled plasma mass spectrometry （ICP-MS）was used for water samples. The results showed that the increased heavy metals typical of Cu and Zn originate from Cu bearing disinfectant solution and Zn bearing feedstuff.