电感耦合等离子体原子发射光谱(ICP-AES)法测定人发中铜、锌、钙、镁、铁  

Determination of Cu,Zn,Ca,Mg and Fe in Human Hair by ICP-AES

作　　者：王生进[1] 张琳[2] 刘春虎[1] 董龙腾 韩夫强 

机构地区：[1]河北省地矿局第十一地质大队,河北邢台054000 [2]河北地质职工大学,石家庄050081

出　　处：《中国无机分析化学》2016年第1期69-72,共4页Chinese Journal of Inorganic Analytical Chemistry

摘　　要：样品经硝酸-高氯酸消化溶解,高氯酸冒烟,盐酸溶解盐类后,在盐酸(5%)介质中,在选定的测定条件下,用电感耦合等离子体原子发射光谱(ICP-AES)法测定人发中微量元素铜、锌、铁、镁、钙。选择Cu 327.3、Zn 206.2、Fe 238.2、Mg 279.5、Ca 315.8nm分别作为铜、锌、铁、镁、钙的分析线与混合标准溶液同时测定;方法加标回收率为98.6%～101%,铜、锌、铁、镁、钙的精密度(RSD,n=8)为0.37%～2%,准确度(RE)为-3.4%～1.15%,检出限分别为0.002 3、0.001 6、0.004 6、0.003 0、0.001 4μg/mL。方法克服了分光光度法和原子吸收光谱法操作繁琐、周期长、成本高、灵敏度低等缺点。用于测定人发样品中的铜、锌、铁、镁、钙元素,测定结果与原子吸收光谱法测定值基本一致。经GBWO7061标准物质和自制标样分析验证,测定值与标准值吻合,结果准确可靠。The sample was digested by HNO3-HClO4,until HClO4 gave off a quantity of white smoke,then the digestion solution was pretreated by HCl.A method for the determination of Cu,Zn,Ca,Mg and Fe in human hair was established by ICP-AES.The analytical lines of 327.3,206.2,238.2,279.5nm and315.8nm were chosen to determine the contents of Cu,Zn,Ca,Mg and Fe,respectively,and the mixed solution was measured simultaneously.The recoveries were 98.6% ~101%,and the relative standard deviations（RSDs,n=8）were 0.37%～2% with-3.4%～1.15% precisions.The detection limits of Cu,Zn,Ca,Mg and Fe were 0.002 3,0.001 6,0.004 6,0.003 0and 0.001 4μg/mL,respectively.The method can overcome the shortcomings such as complex operation,time-consuming,high costs and low sensitivity obtained by spectrophotometry and atomic absorption spectrometry（AAS）.The obtained results were consistent with the results of AAS,The proposed method has been verified by analyzing the national certified reference materials（GBW07061）and the analytical results were in agreement with the certified values.

关 键 词：铜 锌 铁 镁 钙 人发 电感耦合等离子体原子发射光谱法 

分 类 号：O657.31[理学—分析化学] TH744.11[理学—化学]