INORGANICCHEMICALSINDUSTRY ›› 2012, Vol. 44 ›› Issue (10): 49-.

Previous Articles     Next Articles

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
  • Online:2012-10-10 Published:2012-10-12

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

CLC Number: