四川地区食用黄鳝中重金属含量的测定及安全性评价

对四川省13个县市各地区食用黄鳝中重金属污染现状展开研究,采用石墨炉/火焰原子吸收光谱法测定食用黄鳝体内Cd、Cu、Pb、Hg、As五种重金属元素含量,利用单因子污染指数法、综合污染指数法对其污染程度及食用安全性进行评价。结果表明:四川省不同地区、食用黄鳝不同部位、各重金属元素分布存在差异,所检测各地区食用黄鳝肌肉组织各重金属元素平均含量均低于国家限量标准,部分地区内脏器官非食用部分Cd含量超标。因此四川省13个县市市售所检测的食用黄鳝可食用,但仍需降低摄入量。 

Determination and safety evaluation of heavy metals content in M.albus from Sichuan Province

A research was made on the pollution of heavy metal in M. albus from thirteen counties of Sichuan Province.The concentration of five heavy metals content,including Cd,Cu,Cd,Hg and As in M. albus were determined by graphite furnace or flame atomic absorption spectrometry. The methods of single factor pollution index and comprehensive pollution index were used to assess the levels of pollution and food safety of heavy metals in M.albus.The results indicated that there were statistical differences in the mean metal values that obtained from different site and species in different tissues of M.albus.The concentrations of heavy metals in muscle tissue of M.albus were below the maximum levels set by law.The concentrations of Cd in internal organs inedible parts of M.albus were higher in some areas.It might be concluded that the M.albus from thirteen counties of Sichuan Province was edible,but it is necessary to reduce the content of intake.