摘要
研究大量硫代硫酸根离子对摩尔法测定Cl-干扰的消除方法,建立向样品中加硝酸使硫代硫酸根离子转变成单质硫沉淀和二氧化硫气体,消除氯离子测定过程中硫代硫酸根离子干扰的方法,确定最佳操作条件.该方法精密度及准确度均较好,并已应用于硫化黑工艺废液提取硫代硫酸钠过程中Cl-的检测.
The elimination method of thiosulfate anion interference on the chloride ion determination utilizing Mohr methods was investigated. To add the nitric acide to sample and turn the thiosulfate anion to the form of sulphurite precipitation and the sulfur dioxide gas. The interference of the thiosulfate anion on the chloride ion determination was eliminated and the optimum operation condition was obtained. The precision and accuracy of the method was good and the method was applied to determination of chloride ion in extraction of the thiosulfate sodium from the wastewater in the process of the Sulfur Black dyes.
出处
《天津科技大学学报》
CAS
2009年第6期39-41,共3页
Journal of Tianjin University of Science & Technology
基金
天津科技大学科学研究基金资助项目(20070225)
关键词
氯离子
硫代硫酸根
消除干扰
硫化黑
chloride ion
thiosulfate
interference elimination
Sulfur Black
