现代化工

现代化工 ›› 2022, Vol. 42 ›› Issue (12) : 263-268. DOI: 10.16606/j.cnki.issn0253-4320.2022.12.048

分析测试

甲基磺酸湿法回收废铅酸蓄电池过程中铜杂质含量分析方法研究

熊颖, 谭力玮, 孙艳芝, 潘军青, 陈咏梅

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Research on method for analyzing copper impurity content in process of recovering spent lead-acid battery with methylsulfonic acid wet method

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文章历史 +

Received		Published
2022-02-15		2022-12-20
Issue Date	Revised Date
2022-12-23	2022-02-15

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摘要

使用火焰原子吸收分光光度法,考察了酸基体、铅基体以及其他杂质存在对铜含量测定的影响。首次发现,采用过氧化氢催化加热预处理可同时消除体系中甲基磺酸以及铅离子基体对测定铜含量的干扰。研究结果表明,该分析方法铜的检出限为0.01 mg/L,铜的回收率为97.4%~101.7%,相对标准偏差(RSD,n=7)小于1.5%。

Abstract

Flame atomic absorption spectrophotometry is utilized to investigate the effects of acid,lead and other impurities on the determination of copper.It is found for the first time that the interference of methylsulfonic acid and lead in the system can be simultaneously eliminated by employing hydrogen peroxide catalysis and heating pretreatment.The results show that the detection limit of copper is 0.01 mg·L^-1,the recovery of copper is 97.4%-101.7%,and the relative standard deviation (RSD,n=7) is less than 1.5%.