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
罗盈盈 1张文娟 1张文星1
作者信息
- 1. 赣州冶研所检测技术服务有限公司,江西 赣州 341000
- 折叠
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 0.001 0%～0.30%,实验结果表明该方法适用于钨精矿中铅含量的测定.
Abstract
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 0.001 0%-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Key words
atomic fluorescence spectrometry/tungsten concentrates/lead引用本文复制引用
出版年
2024
NETL
NSTL
万方数据