摘要
经微波消解处理样品,采用石墨炉原子吸收光谱法(GFAAS)测定辽宁沿海城市常见海鱼和贝类中镉、铬、铜、铅、铁、锌六种元素的含量。其相对标准偏差(RSD)0.53%～4.01%,加标回收率90.0%～110.0%。结果表明:不同地区、不同鱼贝种类中重金属的分布存在差异,所检测鱼贝类中铬、铜、锌含量低于国家限量标准,部分样品中镉、铅含量超标,但低于暂定每周可耐受摄入量(PTWI)。因此辽宁沿海城市市售所检测的鱼贝类可食用,但仍有必要降低摄入量。
The concentration of six heavy metals, including Cd, Cr, Cu, Fe, Pb and Zn in economically important sea fish and shellfish from Liaoning coastal city were determined by graphite furnace atomic absorption spectrometry （GFAAS） after using microwave digestion techniques. Relative standard deviations（RSD） were 0.53% -4.01% and recovery were 90.0%-100.0%.The results indicated that many statistically significant differences were observed in the mean metal values obtained for different site and species of fish and shellfish.The concentration of Cr,Cu and Zn were below the maximum levels set by law.The concentrations of Cd and Cr were higher, but lower than provisional tolerable weekly intake（PTWl）.lt might be concluded that fish and shellfish from Liaoning coastal city were edible, but necessary to reduce the intake.
出处
《食品工业科技》
CAS
CSCD
北大核心
2012年第8期63-67,共5页
Science and Technology of Food Industry
基金
国家自然科学基金(21076026)
辽宁省自然科学基金(20102005)
辽宁省教育厅重点实验室项目(LS2010002)
关键词
鱼
贝
重金属
安全性评价
fish
shellfish
heavy metals
safety evaluation
