激光剥蚀-电感耦合等离子体质谱法测定纯金中18种杂质元素  

Determination of 18 impurity elements in pure gold by laser denudation-inductively coupled plasma-mass spectrometry

作　　者：贾贵发 陈晓科 赵文虎 甘建壮 李秋莹 马媛 杨辉 Jia Guifa;Chen Xiaoke;Zhao Wenhu;Gan Jianzhuang;Li Qiuying;Ma Yuan;Yang Hui(State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Sino-Platinum Metals Co.,Ltd.;Yunnan Gold Mining Group;Gui Yan Detection Technology(Yunnan)Co.,Ltd.)

机构地区：[1]贵研铂业股份有限公司稀贵金属综合利用新技术国家重点实验室 [2]云南黄金矿业集团有限公司 [3]贵研检测科技(云南)有限公司

出　　处：《黄金》2022年第3期94-98,共5页Gold

基　　金：国家重点研发计划项目(2017YFB0305405)。

摘　　要：采用激光剥蚀-电感耦合等离子体质谱法测定纯金中Ag、As、Bi、Cd、Co、Cr、Cu、Fe、Ir、Mg、Mn、Ni、Pb、Pd、Pt、Rh、Te、Zn等18种杂质元素。以系列金标样绘制标准曲线,并优化了仪器最佳工作参数。在激光能量为60%、剥蚀孔径为110μm、扫描速率为50μm/s、脉冲频率为10 Hz、载气流量为0.80 L/min的条件下,各元素标准曲线的线性系数为0.9650~0.9995,检出限为0.010~0.660μg/g,测定结果(除Fe、Ni外)相对标准偏差为0.75%~11.42%。采用本方法测定纯金中杂质元素,结果与ICP-AES测定结果吻合。Laser denudation-inductively coupled plasma-mass spectrometry is used for determination of 18 the impurity elements such as Ag,As,Bi,Cd,Co,Cr,Cu,Fe,Ir,Mg,Mn,Ni,Pb,Pd,Pt,Rh,Te,Zn.Standard curve is mapped with gold standard samples and optimal working parameters are optimized.When the laser energy is 60%,denudation bore diameter is 110μm,scanning rate is 50μm/s,impulse rate is 10 Hz and the carrier gas flow is 0.80 L/min,the linear coefficient of the standard curve of each element is 0.9650-0.9995,the detection limit of each element is 0.010-0.660μg/g,the relative standard deviation(RSD)is 0.75%-11.42%(except for Fe,Ni).The results of impurity elements determination in pure gold with this method are consistent with ICP-AES.

关 键 词：激光剥蚀 电感耦合等离子体质谱法 杂质元素 线性相关系数 标准曲线法 

分 类 号：O657.63[理学—分析化学]