摘要
经微波消解处理样品,采用石墨炉原子吸收光谱法测定辽西地区常见食用鱼中肉、鳃和内脏3个组织器官内Cd、Cr、Cu、Fe、Pb、Zn六种元素的含量。方法相对标准偏差0.54%~2.03%,加标回收率94.0%~1 1 0.0%。结果表明:所检测鱼中F e、Z n、C u含量较高,C d、C r、P b含量较低;鱼内脏和鳃中的重金属含量高于鱼肉;Cr、Zn和Cu的含量均低于国家食品限定量;部分鱼样中Cd和Pb的含量超标,但未超过暂定每周可耐受摄入量。因此辽西地区市售所检测鱼种可食用,但仍有必要降低摄入量。
Heavy metals, including Cd, Cr, Fe, Pb, Cu and Zn, in muscles, viscus and gills from six commonly consumed fish grown in the West of Liaoning Province were determined by graphite furnace atomic absorption spectrometry (GFAAS) after using microwave digestion techniques. Relative standard deviations (RSD) were 0.54%--2.03% and recovery were 94.0%-- 110.0%. The results indicated that Fe, Cu and Zn offish accumulated the highest concentration in all tissues of the species, while Cd, Cr, Pb accumulated the lowest levels. The heavy metal concentration in viscus and gills were higher than those in muscles. The concentration of Cr, Zn and Cu were below the maximum levels of national regulation. The concentrations of Cd and Cr were excess the maximum levels of national regulation, but lower than provisional tolerable weekly intake (PTWI). Current investiga- tion indicates that fish from the West of Liaoning Province are safe for consumption, but necessary to reduce amount of intake.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2012年第10期237-240,共4页
Food Science
基金
国家自然科学基金面上项目(21076026)
辽宁省自然科学基金项目(20102005)
辽宁省教育厅重点实验室项目(LS2010002)
关键词
鱼
重金属
暂定每周可耐受摄入量
fish
heavy metals
provisional tolerable weekly intake