深海鱼体中砷含量的测定与健康风险评价

目的]通过测定10种常见深海鱼体中砷的含量,并对海南省沿海居民经由饮食途径摄入砷的健康风险进行评估,为合理的饮食提供基础数据和参考。方法]利用混合液（硝酸＋过氧化氢）消化样品,以盐酸作载流,采用氢化物-原子荧光法进行测定;采用目标危险系数（THQ）的方法对海南省沿海居民食用深海鱼的健康风险进行了评价。结果]10种深海鱼的砷水平在0.018 5～0.091 2mg/kg范围内,均低于《食品中污染物限量》（GB2762-2005）对无公害海产品中砷含量的限量标准（≤0.1 mg/kg）,未出现超标现象。对成年人食用深海鱼的健康风险评估发现：海南省沿海居民长期食用带鱼、白鲳鱼、金线鱼、马鲛鱼、黄尾鱼、鲇鱼的目标危险系数大于1,存在健康风险;长期食用黄花鱼、石斑鱼、海肝鱼的目标危险系数接近1,有潜在的健康风险。结论]在日常饮食中,合理搭配不同种类的鱼种以减少摄入重金属的健康风险,避免单一大量食用风险系数大于1的鱼种。

Determination of Arsenic in Deep-Sea Fish and Assessment of Its Health Risk

Objective] The basic data and reference for the management of the diet of the costal residents in Hainan Province were provided based on the reasonable evaluation of the health risk of the arsenic(As) taken from deep-sea fish through the measurement of the content of As in 10 species of common deep-sea fishes.Method] The sample of deep-sea fish was digested with the mixture(nitric acid + hydrogen peroxide) and the content of As in the sample was tested with the method of hydride generation-atomic fluoresc...