电感耦合等离子体原子发射光谱法测定钨矿石中8种成分

来源期刊：冶金分析2010年第9期

论文作者：吕振生 赵庆令 李清彩 葛童

文章页码：47 - 50

关键词：电感耦合等离子体原子发射光谱； 多组分同时测定； 钨矿； 干扰元素校正系数

Key words：inductively coupled plasma-atomic emission spectrometry (ICP-AES)； simultaneous determination of multi-component； tungsten ore； interfering element correction coefficients method (IECs)

摘    要：钨矿石样品经高氯酸、盐酸、硝酸、氢氟酸消解处理后,用2 g/L酒石酸+王水(φ=4%)混合溶液浸取盐分,电感耦合等离子体原子发射光谱(ICP-AES)法同时测定钨矿石中As、Cu、Ga、Mo、Pb、Sn、W、Zn 8种组分。比较了3种不同的溶矿方法,利用离峰背景校正法消除了背景干扰,并采用干扰元素校正系数法消除了元素Zn对W的谱线重叠干扰。经钨矿石标准物质分析验证,结果与认定值吻合,测定结果的相对标准偏差小于3.2%。

Abstract: After digested by mixed acid(HClO₄,HCl,HNO₃ and HF) and extracted by tartaric acid(2 g/L)+ aqua regia(φ=4%),eight components in tungsten ore including As,Cu,Ga,Mo,Pb,Sn,W and Zn were simultaneously determined by inductively coupled plasma atomic emission spectrometry (ICP-AES).In this paper,three sample preparation methods were compared.The background interference was eliminated with off-peak background correction method,and the spectral overlapping interference of Zn with W was eliminated using interference element correction coefficients method.This method has been applied to the determiation of tungsten ore national certified reference materials,and the results were in good agreement with the certified value with RSD less than 3.20%.