摘要
建立了氯化银比浊-紫外分光光度法测定粗碳酸锂中的Cl-含量。用硝酸和双氧水溶解试样,用紫外分光光度法测定吸光度,根据标准工作曲线确定Cl-含量。结果表明:工作曲线方程为y=0.0489 x+0.0042,相关系数为0.9998,线性相关性较好,相对标准偏差小于3%,回收率为98.5%~101.25%。方法的准确度和精密度较高,适合用于测定粗碳酸锂中较低含量的氯离子。
A method for determination of chloride concentration in crude lithium carbonate by sliver chloride turbidimetry-ultraviolet-visible spectrophotometry was established.The specimen was dissolved using nitic acid and hydrogen peroxide.The absorbance was measured by spectrophoto-metry,and chloride ion concentration was determined according to standard working curve.The results show that the linear equation with great linear relationship is y=0.0489 x+0.0042,and the correlation coefficient is 0.9998.The relation standard deviations is less than 3%,and the recoveries are between 98.5%~101.25%.This method is accuracy and precision well,which is suitable for detection of chloride ion in crude lithium carbonate.
作者
黎佳伟
谢堂锋
张莹娇
阮丁山
LI Jiawei;XIE Tangfeng;ZHANG Yingjiao;RUAN Dingshan(Hunan Brunp Recycling Technology Co.,Ltd.,Changsha 410600,China;Guangdong Provincial Key Laboratory of Battery Recycling and Reuse,Foshan 528137,China;Guangdong Brunp Recycling Technology Co.,Ltd.,Foshan 528137,China)
出处
《湿法冶金》
CAS
北大核心
2022年第2期176-180,共5页
Hydrometallurgy of China
基金
国家重点研发计划项目(2018YFC1901803)
广东省电池循环利用企业重点实验室(2021年度)项目(2021B1212050002)。
关键词
比浊
紫外-分光光度
粗碳酸锂
氯离子
测定
turbidimetry
ultraviolet-visible spectrophotometry
crude lithium carbonate
chloride ion
determination
作者简介
第一作者:黎佳伟(1997—),男,本科,工程师,主要研究方向为锂离子电池正极材料的分析检测。
