菲律宾蛤仔中铅、镉、汞、无机砷的含量分析及食用安全性评价

采用原子吸收光谱法和原子荧光光谱法分别对舟山本岛范围内农贸菜场和超市的菲律宾蛤仔中铅、镉、总汞、无机砷含量进行测定，并对其污染状况和食用安全性进行评价。结果显示：菲律宾蛤仔可食部分中铅、镉和总汞均符合GB 2762-2012《食品中污染物限量》要求，部分样品中无机砷含量超标，超标率在6%～10%之间，无机砷污染指数为0.71；菲律宾蛤仔中铅、镉、汞、无机砷含量小于世界卫生组织/联合国粮农组织制定的每周可耐受摄入量比例的10%。故舟山农贸菜场和超市中菲律宾蛤仔相对安全。

Analysis and Safety Evaluation of Lead,Cadmium, Mercury and Inorganic Arsenic in Ruditapes philippinarum

The contents of heavy metals including lead, cadmium, mercury and inorganic arsenic in Ruditapes philippinarum
collected from terminal markets and supermarkets in Zhoushan were analyzed by atomic absorption spectrophotometer and
atomic fluorescent spectrophotometer. The food safety and pollution level of Ruditapes philippinarum were also investigated.
The results indicated that the contents of lead, cadmium and mercury in the edible parts of Ruditapes philippinarum were
consistent with the national food hygiene standards. The contents of inorganic arsenic in some samples (accounting for 6%–
10% of the total number of tested samples) were significantly higher than the maximum contamination level. The general
composite pollution index of inorganic arsenic for Ruditapes philippinarum was 0.71, which represented a medium pollution
level. The contents of lead, cadmium, mercury and inorganic arsenic accounted for below 10% of the provisional tolerable
weekly intake (PTWI), which could be identified as a low risk for consuming Ruditapes philippinarum in the terminal
markets and supermarkets from Zhoushan.