离子色谱法测粗碳酸锂中的杂质阴离子  

Determination of Impurity Anions in Crude Lithium Carbonate by Ion Chromatography

作　　者：王港 明帮来 孙乔 王晓娇 王禹 Wang Gang;Ming Banglai;Sun Qiao;Wang Xiaojiao;Wang Yu(Qingdao Shenghan Chromatography Technology Co.,Ltd.,Qingdao Shandong 266101,China;Guangdong Brunp Recycling Technology Co.,Ltd.,Foshan Guangdong 528000,China)

机构地区：[1]青岛盛瀚色谱技术有限公司,山东青岛266101 [2]广东邦普循环科技有限公司,广东佛山528000

出　　处：《山西化工》2025年第1期96-98,共3页Shanxi Chemical Industry

摘　　要：探究了离子色谱法测定粗碳酸锂中的杂质阴离子(F^(-)、Cl^(-)和SO_(4)^(2-)),并与传统测试方法(氟离子选择电极法、氯化银比浊法和硫酸钡比浊法)作比对。用硝酸和过氧化氢溶液溶解粗碳酸锂,过Na型前处理柱和0.22μm滤膜后进样分析,用SH-AC-4色谱柱进行分离,碳酸盐体系,抑制电导法检测。结果表明,3种阴离子的线性关系良好(R^(2)>0.999);粗碳酸锂样品的相对标准偏差(RSD,n=11)在0.34%~2.67%之间,加标回收率在94.85%~102.80%之间。该方法简单快速,相较于传统测试方法精密度更高,适合粗碳酸锂样品的杂质阴离子检测。The determination of impurity anions(F^(-),Cl^(-),and SO_(4)^(2-))in crude lithium carbonate by ion chromatography was investigated and compared with traditional testing methods(fluoride ion selective electrode method,silver chloride turbidity method,and barium sulfate turbidity method).Dissolve crude lithium carbonate in nitric acid and hydrogen peroxide solution,pass it through a Na type pretreatment column and a 0.22μm filter membrane for sample analysis,separate it using an SH-AC-4 chromatography column,and detect it using a carbonate system and inhibition conductivity method.The results showed a good linear relationship among the three anions(R^(2)>0.999).The relative standard deviation(RSD,n=11)of crude lithium carbonate samples is between 0.34% and 2.67%,and the recovery rate of spiked samples is between 94.85% and 102.80%.This method is simple and fast,with higher precision compared to traditional testing methods,and is suitable for impurity anion detection of crude lithium carbonate samples.

关 键 词：离子色谱 粗碳酸锂 离子选择电极法 比浊法 

分 类 号：O657.75[理学—分析化学]