氢化物发生-原子荧光光谱法测定金属锰粉中硒  

Determination of selenium in manganese powders by hydride generation-atomic fluorescene spectrometry

作　　者：周庆华[1] 甘露[1] 王佳[1] 

机构地区：[1]江西省分析测试中心,江西南昌330029

出　　处：《冶金分析》2014年第3期57-60,共4页Metallurgical Analysis

摘　　要：用硝酸溶解样品，控制盐酸酸度为0．72mol／L，硼氢化钾浓度为10．0g／L，建立了氢化物发生一原子荧光光谱法（HG—AFS）测定金属锰粉中硒的方法。研究了样品溶液中共存离子的干扰，结果表明，Mn2＋、Al3＋、Fe3＋、Si㈣、Cu2＋、Mg3＋、Pb2＋、Ca2＋对硒的测定均不产生干扰。方法的线性范围为0．20～100．0μg／L，相关系数为0．9996，仪器检出限为0．0596μg／L。方法用于金属锰粉样品中硒的测定，结果与电感耦合等离子体原子发射光谱法相符，相对标准偏差（RSD，72—4）为1．9％～3．4％，加标回收率为95％～102％。After the sample was dissolved in nitric acid, a method for determination of selenium in man- ganese powder was established by hydride generation-atomic fluorescence spectrometry （HG-AFS） with the acidity of hydrochloric acid at 0.72 mol/L and the concentration of potassium borohydride of 10.0 g/L. The interference from the coexisting ions in the sample solution was investigated and it was found that Mn2＋ , Al3＋ , Fe3＋ , Si （IV）, Cu2＋ , Mg2＋ , Pb2＋ and Ca2＋ did not interfere with the determi- nation of selenium. The linear range of this method was 0.20-100.0 μg/L with correlation coefficient of 0. 999 6 and the instrument detection limit was 0. 059 6μg/L. When the method was applied to de- termination of selenium in manganese powder samples, the results were consistent with those obtained by inductively coupled plasma atomic emission spectrometry, the relative standard deviations （n=4） were in the range of 1.9%-3.4% and the recoveries were in the range of 95%-102%.

关 键 词：氢化物发生一原子荧光光谱法 金属锰粉 硒 

分 类 号：O657.31[理学—分析化学]