电感耦合等离子体原子发射光谱法(ICP-AES)测定单水氢氧化锂中的硼含量  

Determination on Boron Content in Lithium Hydroxide Monohydrate by Inductively Coupled Plasma Atomic Emission Spectrometry(ICP-AES)

作　　者：邓红云 李仕红 周复 何霞 钟兆资 DENG Hong-yun;LI Shi-hong;ZHOU Fu;HE Xia;ZHONG Zhao-zi(Tianqi Lithium Co.,Ltd.,Shehong,Sichuan 629200,China;Lithium Resources and Lithium Materials Key Laboratory of Sichuan Province,Shehong,Sichuan 629200,China)

机构地区：[1]天齐锂业股份有限公司,四川射洪629200 [2]锂资源与材料四川省重点实验室,四川射洪629200

出　　处：《云南冶金》2021年第1期69-73,共5页Yunnan Metallurgy

摘　　要：采用电感耦合等离子体发射光谱测定单水氢氧化锂中硼元素的含量。根据试验条件,确定了仪器的工作参数;锂基体对测定结果无干扰,故采用标准曲线法,标准曲线的线性相关系数为0.9999;溶解样品时优选盐酸,并保持测试时酸度为3%;方法的精密度较好,相对标准偏差(n=11)小于2.50%;方法的灵敏度较高,检出限为0.0033μg/mL;加标回收率为98.42%~101.67%。方法适用于氢氧化锂中硼含量范围为(0.5~10)μg/g的测定,也适用于其它类似锂盐如碳酸锂、氯化锂中硼含量的测定。The boron content in lithium hydroxide monohydrate is determined by inductively coupled plasma atomic emission spectrometry.According to the experimental condtitions,the working parameters of the instruments are confirmed;the standard curve method is adopted due to the lithium matrix has no interference to the determination results,the linearly dependent coefficient of the standard curve is 0.9999;the hydrochloric acid is the first choice for sample dissolution,and the acidity shall be kept as 3%in the test;the method precision is good,the relative standard deviation(n=11)is less than 2.50%;the method with high sensitivity,the detection limit is 0.0033μg/mL;the adding standard recovery rate is 98.42%~101.67%.The method is appropriate for the determination of boron content with the range of(0.5~10)μg/g in the lithium hydroxide,and it is also appropriate for the boron content determination in the other similar lithium salt,like lithium carbonate and lithium chloride.

关 键 词：单水氢氧化锂 硼 电感耦合等离子发射光谱仪 

分 类 号：O657[理学—分析化学]