无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2012, Vol. 44 ›› Issue (10): 49-.

• 论文 • 上一篇    下一篇

盐湖卤水法碳酸锂产品中硼杂质含量的测定

刘国旺,唐发满,周晓军,赵 颖,贾发云   

  1. 青海锂业有限公司,青海西宁 810003
  • 出版日期:2012-10-10 发布日期:2012-10-12

Determination of boron in lithium carbonate manufactured from salt lake brine

 LIU  Guo-Wang, TANG  Fa-Man, ZHOU  Xiao-Jun, ZHAO   Ying, JIA  Fa-Yun   

  1. Qinghai Lithium Co.,Ltd.,Xining,810003,China
  • Published:2012-10-10 Online:2012-10-12

摘要: 基于在微酸性介质中,甲亚胺-H与硼生成显色络合物,可用于比色法测定硼,建立了分光光度法测定盐湖卤水法碳酸锂产品中硼杂质含量的方法,并对存在的相关问题进行了讨论。在实际操作中比较了标准曲线法和标准加入法,测定结果的相对标准偏差(n=9)分别为0.53%和0.52%,平均回收率分别为99.2%和99.4%。该方法适合于三氧化二硼质量分数为0.01%~0.4%的碳酸锂样品中硼杂质含量的测定。

关键词: 盐湖卤水法碳酸锂, 分光光度法, 硼, 甲亚胺-H

Abstract: A spectrophotography method was established for the determination of the content of boron in lithium carbonate manufactured from salt lake brine based on azomethine H reacting with boron ions to form chromogenic complex in slightly acidic medium,and the related problems were also discussed.The standard curve method and standard addition method were compared in practice, and the results showed that the relative standard deviations were 0.52% and 0.53% respectively(n=9), the average recovery rates were 99.2% and 99.4% respectively.This method is suitable for determination of boron impurity in lithium carbonate containing boron trioxide at 0. 01%~0.4%(mass fraction).

Key words: lithium carbonate manufactured from salt lake brine;spectrophotography;boron, azomethine H

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