摘要
采用电感耦合等离子体质谱法(ICP-MS)与DMA-80自动测汞仪分别对东苕溪下游鲫鱼肌肉、性腺和鳃组织中重金属As、Cd、Cr、Cu、Mn、Zn与Hg的含量进行测定,并对其污染状况和食用安全性进行评价。结果表明:东苕溪下游鲫体中As、Cd含量超标,整鲫重金属综合污染指数为1.2,污染程度严重。As、Cr与Hg所占暂定每周可耐受摄入量(PTWI)比例超过10%,认定食用该地区鲫鱼对人体健康存在潜在风险。在肌肉、性腺和鳃组织中As、Cd、Cr、Cu、Hg、Zn的含量具有显著性差别(P<0.05);不同组织污染程度为性腺>鳃>肌肉。
The concentrations of heavy metals such as As, Cd, Cr, Cu, Mn, Zn and Hg in the muscle, gonad and gill of crucian carp were analyzed by inductively coupled plasma mass spectrometry（ICP-MS） and DMA-80 direct mercury analyzer. The crucian carp was captured by gill nets and electro-fishing facilities from the downstream East Tiaoxi River within the period of Oct to Nov 2011. The food safety and the level of pollution of crucian carp were also investigated. The results indicated that the concentrations of As and Cd were significantly higher than the maximum levels of contaminants in food issued by the ministry of health P.R.C. The general composite pollution indexes for the crucian carp was 1.2, which reached a serious pollution level. The concentration of As, Cr and Hg accounted for over 10% of provisional tolerable weekly intake （PTWI）, which could be identified as high risk for consuming the crucian carp. Significant correlations were observed between the concentrations of As, Cd, Cr, Cu, Hg, Zn and tissue specificity （P 〈 0.05）. The pollution level of different tissues was ranked in the order of gonad 〉 gill 〉 muscle.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2013年第19期317-320,共4页
Food Science
基金
上海市科学技术委员会科研计划项目(11230705600)
长江水环境教育部重点实验室面上项目(YRWEY1004)
苏州市科技计划项目(SS201305)
关键词
东苕溪
鲫鱼
重金属
污染评价
食用安全性
East Tiaoxi river
crucian carp
heavy metals
pollution evaluation
food safety
