原子荧光光谱法测定钨精矿中铅含量  

Determination of Lead Content in Tungsten Concentrates by Atomic Fluorescence Spectrometry

作　　者：罗盈盈 张文娟 张文星 LUO Yingying;ZHANG Wenjuan;ZHANG Wenxing(Ganzhou Metallurgy Research Institute Testing and Technology Service Co.,Ltd.,Ganzhou 341000,Jiangxi,China)

机构地区：[1]赣州冶研所检测技术服务有限公司,江西赣州341000

出　　处：《中国钨业》2024年第1期64-69,共6页China Tungsten Industry

摘　　要：随着国家对环境保护的日益重视,在钨精矿生产以及交易中,对重金属污染元素铅的监控有了更高的要求。采取氢化物发生-原子荧光光谱法,研究了在除去大量钨基体的稀硝酸介质中,用草酸作掩蔽剂、铁氰化钾作氧化剂,通过条件实验、精密度和加标回收实验,确立了准确度好、灵敏度高的检测铅的方法。方法的精密度(RSD)小于5%,加标回收率在105%~110%之间,测定范围为0.0010%~0.30%,实验结果表明该方法适用于钨精矿中铅含量的测定。With the increasing emphasis on environmental protection in China,there are higher requirements for monitoring heavy metal pollution element lead in the production and trading of tungsten concentrate.The hydride generation atomic fluorescence spectrometry was used to study the use of oxalic acid as a masking agent and potassium ferrocyanide as an oxidant in a dilute nitric acid medium with a large amount of tungsten matrix removed.An accurate and highly sensitive method for detecting lead has been established through conditional experiments,precision and spiked recovery experiments.The precision(RSD)of the method is less than 5%,the recovery rate of spiking is between 105%–110%,and the determination range is 0.0010%–0.30%.So it is applicable to the determination of lead content in tungsten concentrates.

关 键 词：原子荧光光谱法 钨精矿 铅 

分 类 号：O657.31[理学—分析化学]