石墨炉原子吸收法测定薏苡仁中4种重金属含量  

Content analysis of four heavy metals in coix seed by graphite furnace atom absorbance spectrometry

作　　者：李容[1] 黄锁义[1] 苏宁杰[2] 韦银梅[2] 覃春虑[2] 

机构地区：[1]右江民族医学院药学系,广西百色533000 [2]右江民族医学院护理系,广西百色533000

出　　处：《广西工学院学报》2012年第4期82-85,共4页Journal of Guangxi University of Technology

基　　金：广西自然科学基金项目(2011GXNSFA018046)资助

摘　　要：为建立测定薏苡仁中铅、镉、铜、镍含量的方法,通过湿法消解薏苡仁,采用石墨炉原子吸收法对各成份进行测定.结果表明:薏苡仁中铅、镉、铜、镍的含量分别为2.81 mg/kg,0.17 mg/kg,15.93 mg/kg,1.69 mg/kg,4种元素的回收率在97%～102%之间,相对标准偏差小于2.5%;该方法能快速、准确地测定薏苡仁中的重金属离子含量.The contents of lead, copper, cadmium and nickel in coix seed were determined through graphite furnace atomic absorption spectrometry by digesting coix seed with wet method. The results show that the contents of lead, copper, cadmium and nickel were 2.81 mg/kg, 0.17 mg/kg, 15.93 mg/kg, 1.69 mg/kg respectively. The recoveries were between 97% and 102% by standard addition method and RSD was less than 2.5%. Therefore the method for determining the heavy metals in coix seed is rapid and accurate.

关 键 词：石墨炉原子吸收 薏苡仁 铅 铜 镉 镍 含量 

分 类 号：O657.31[理学—分析化学] R284.1[理学—化学]