碱性锌锰电池用锌粉中杂质元素的质谱分析  

Determination of impurity elements in zinc powder for alkaline Zn/MnO_2 battery by inductively coupled plasma mass spectrometry

作　　者：谢华林[1] 聂西度[2] 

机构地区：[1]长江师范学院化学化工学院,重庆408100 [2]中南大学化学化工学院,湖南长沙410083

出　　处：《电池》2012年第4期236-238,共3页Battery Bimonthly

基　　金：重庆市涪陵区科研项目(FLKJ;2012ABA1041);湖南省自然科学基金(10JJ6016);湖南省产学研培育项目(10CY002)

摘　　要：利用带八极杆碰撞／反应池（ORS）和屏蔽炬技术的电感耦合等离子体质谱（ICP-MS）分析，测定碱性锌锰电池用锌粉中Mg、Cr、Mn、Fe、Co、Ni、Cu、As、Mo、Cd、Sb和Hg等12种杂质元素的含量。向ORS中引入氢气和氦气，消除多原子离子的干扰，以50μg／L的Sc、Ge、In及Tb为内标元素，校正基体干扰和漂移。待测元素的检出限为0．001—0．031μg／L，相对标准偏差为0．84％～2．36％，样品的加标回收率为91．8％，106．0％。方法简便、快速，结果准确可信。An inductively coupled plasma mass spectrometry （ICP-MS） with an octopole reaetion/oilision cell （ORS） and shield torch system was employed for the determination of impurity elements in zinc powder for alkaline Zn/MnO2 battery. The elements of Mg,Cr, Mn, Fe, Co, Ni, Cu, As, Mo, Cd, Sb and Hg were determined by introducing the hydrogen gas or helium gas into the ORS to eliminate the interference of multi-element molecules and ions. Se, Ge, In and Tb were used to correct the matrix interfer- ence and drift. Under the optimal conditions, the detection limits of the impurity elements were 0. 001 - 0.031 μg/L, the relative standard deviation was 0.84% - 2.36%, the recovery of the samples was 91.8% - 106.0%. The method was easy, rapid and accuracy.

关 键 词：电感耦合等离子体质谱法 碱性锌锰电池 锌粉 八极杆碰撞/反应池 

分 类 号：TM911[电气工程—电力电子与电力传动]