微波消解-火焰原子吸收光谱法测定三峡库区鲤鱼中4种重金属元素  

Determination of four kinds of metal elements in carp in the Three Gorges Reservoir by FAAS with microwave digestion

作　　者：王兆丹[1] 曲留柱[1] 韩林[1] 唐华丽[1] 肖国生[1] 

机构地区：[1]重庆三峡学院生命科学与工程学院渝东北特色生物资源开发利用工程中心,重庆404100

出　　处：《食品与发酵工业》2017年第6期250-254,共5页Food and Fermentation Industries

基　　金：重庆市教委科学技术研究项目(KJ1501005);国家重点研发计划(2016YFD0400604);重庆市万州区科技计划项目(201403064)

摘　　要：建立鲤鱼中4种重金属元素的微波消解-火焰原子吸收测定的方法。利用微波消解处理鲤鱼样品,使用火焰原子吸收光谱方法测定鲤鱼中Pb、Cd、Cu和Cr的含量。结果显示,鲤鱼中Pb、Cd、Cu和Cr含量分别为0.361、0.153、5.860、1.273μg/g,除Cd以外,均在国家限量范围之内;方法检测线为0.01~0.12μg/g,精密度试验RSD为1.74%~4.56%,重复性试验RSD为2.89%~5.76%,加标回收率为94.1%~121.5%;与国标检测方法相比,该方法检测速度快、精密度高。因此,该测定方法操作简单、速度快,灵敏准确,可用于三峡库区鲤鱼中4种重金属元素的测定。To establish the detecting method for four heavy metal elements in carp by flame atomic absorption spectrometry （FAAS） with microwave digestion. The carp samples were digested by microwave digestion, the concen- tration of Pb, Cd, Cu and Cr in carp were detected by flame atomic absorption spectrometry. Results showed the aver- age concentration of Pb, Cd, Cu and Cr in carp was 0. 361,0. 153,5. 860,1. 273 μg/g. The detected levels of stud- ied metals were below the legal national limited standards except Cd. The detection limits was 0.01 -0.12μg/g,the RSD of the precision test was 1.74% -4.56% , the repeatability test was 2.89% -5.76% and the recovery rate of samples was be Lween 94. 1% -121.5%. Compared with the national standard, this method is more fast and accu- rate. Therefore, the advantages of this method are simple, rapid, accurate and can be used for the detection of four heavy metal elements in carp in the Three Gorges Reservoir area.

关 键 词：微波消解 火焰原子吸收光谱 三峡库区 鲤鱼 重金属 

分 类 号：O657.31[理学—分析化学] TS254.7[理学—化学]