热分解-汞齐化富集-冷原子吸收分光光度法测定工业废盐中的汞含量
Determination of Mercury Content in Industrial Waste Salt by Pyrogenic Decomposition-Amalgamation Enrichment-Cold Atom Absorption Spectrophotometry
饶丽丽 1李凡露 2张晖 3廖绍群 4鞠颖1
作者信息
- 1. 江西省地质局实验测试大队,江西南昌,330002
- 2. 江西核工业环境保护中心有限公司,江西南昌,330002;江西省地质调查勘查院矿产勘查所,江西南昌,330103
- 3. 江西省地质局实验测试大队,江西南昌, 330002;江西金源有色地质测试有限公司,江西南昌,330201
- 4. 新余市生态环境污染防治中心,江西新余,338000
- 折叠
摘要
本研究尝试建立利用热分解-汞齐化富集-冷原子吸收分光光度法测定工业废盐中汞含量的方法.本研究方法在进样量为 0.1g,样品干燥温度为 150℃,干燥时间为 20s,热分解温度为 750℃,分解时间为 180s,汞齐化时间为 12s,读数时间为 30s的条件下用直接测汞仪检测工业废盐中的汞含量.实验结果显示,方法测定范围为 0.001μg/g～5μg/g,相关系数R2 优于 0.9999,汞含量的检出限为 0.0002μg/g,相对标准偏差(RSD)在 6.34%～7.55%范围内,工业废盐样品加标回收率在 89.8%～121.4%范围内.该方法操作简便、耗时较短、无基体干扰、重现性好、准确度高,适用于生态环境损害鉴定评估、固体废物鉴别等工作中工业废盐的汞含量测定.
Abstract
This study attempts to establish a method for determining mercury content in industrial waste salt using thermal decomposition mercury homogenization enrichment cold atomic absorption spectrophotometry.This research method uses a direct mercury analyzer to detect the mercury content in industrial waste salt under the conditions of a sample injection volume of 0.1 g,sample drying temperature of 150℃,drying time of 20 seconds,thermal decomposition temperature of 750℃,decomposition time of 180 seconds,mercury homogenization time of 12 seconds,and reading time of 30 seconds.The experimental results show that the measurement range of the method is 0.001 μg/g～5 μg/g,correlation coefficient R2 better than 0.9999,detection limit of mercury content is 0.0002 μg/g,the relative standard deviation(RSD)is within the range of 6.34%to 7.55%,and the recovery rate of industrial waste salt samples is within the range of 89.8%to 121.4%.This method is easy to operate,time-consuming,matrix free,reproducible,and highly accurate,and is suitable for the determination of mercury content in industrial waste salts in ecological environment damage assessment,solid waste identification,and other work.
关键词
热分解-汞齐化富集-冷原子吸收分光光度法/工业废盐/汞/生态环境损害鉴定评估/危险废物鉴别Key words
pyrogenic decomposition-amalgamation enrichment-cold atom absorption spectrophotometry/industrial waste salt/mercury/identification and assessment of environmental damage/identification of solid wastes引用本文复制引用
基金项目
江西省地质局2023年度生态环境修复公益项目(2023STXF04)
出版年
2024
NETL
NSTL
维普
万方数据