Email Alert | RSS

四川农业大学学报 ›› 1997, Vol. 15 ›› Issue (04): 517-519.doi: 10.16036/j.issn.1000-2650.1997.04.021

• 研究论文 • 上一篇    下一篇

偶氮氯磷Ⅲ吸光光度法测定工业碳酸锂中微量钙

陈华萍, 黄乾明   

  1. 四川农业大学基础部, 雅安市 625014
  • 收稿日期:1997-11-15 出版日期:1997-12-31 发布日期:2017-03-07

ABSORPTIOPHOTOMETRIC MICRO-ANALYSIS OF CALCIUM IN INDUSTRIAL LITHIUM CARBONATE WITH CHLOROPHOSPHORAZO Ⅲ AS A CHROMOGENIC REAGENT

Chen Huaping, Huang Qianming   

  1. Department of Basic Sciences, Sichuan Agricultural University/Yaan, Sichuan, China 625014
  • Received:1997-11-15 Online:1997-12-31 Published:2017-03-07

PDF (PC)

150

赞

摘要： 研究了工业碳酸锂中微量钙的测定方法。采用偶氮氯磷Ⅲ[2,7-双-(4-氯-2-膦苯偶氮)-1,8-二羟基苯酚-3,6-二磺酸]作显色剂,在pH=2.3-2.7条件下,钙离子与偶氮氯磷Ⅲ生成水溶性蓝色配合物,最适测定波长为λ=658nm,摩尔吸光系数ε=3.1×104,有色溶液稳定6小时,钙含量在0-1μg/mL范围内服从比耳定律。该显色剂用于工业碳酸锂中微量钙的测定与原子吸收法相比较,结果一致。

关键词: 偶氮氯磷Ⅲ, 吸光光度法测定, 工业碳酸锂, 微量钙

Abstract: A method has been studied for the determination of microamounts of calcium in industrial lithium carbonate, In the pH 2.3-2.7 region, chlorophosphonazo Ⅲ as a color reagent and calcium ion give a watersolubility blue co-ord ination compound. The Most applicable wave length λ for determination is 658nm, and the Molar absorptivity ε is 3.1×104, The colored solution can be steadied for 6 hours, Beer's law is obeyed when Ca2+ concentration is in the range of 0 to 1 μg/mL, It's the same result that the method is compared with AAS.

Key words: CHLOROPHOSPHONAZO Ⅲ, ABSORPTIOPHTOMETRIC DETERMINATION, INDUSTRIAL LITHIUM CARBONATE, MICROAMOUNTS OF CALCIUM

中图分类号: 

  • O614.231
ISSN 1000-2650
CN 51-1281/S
主办：四川农业大学
主编：李明洲
地址：四川雅安市雨城区，四川农业大学学报编辑室
邮编：625014
电话：温江校区（028-82696013）；雅安校区（0835-2882295）
Email：jsau@sicau.edu.cn
QQ：3093912380

版权所有 © 2018 《四川农业大学学报》编辑部