摘要
介绍了一种测定非卤化有机物中微量氯的方法 ,即以碱性H2 O2 溶液为吸收液 ,用HNO3 溶液调节pH为 7~ 9.5 ,以K2 CrO4溶液为指示剂 ,用AgNO3 标准溶液滴定。回收率在97%~ 1 0 1 % ,相对标准偏差为 1 .8%~ 4.7%。
A method for determination of microamount chlorine in non-halogenated organics is introduced. To do this, alkaline H 2O 2 solution is chosen as absorbing liquid, and the pH of the solution is adjusted to 7~9.5 with HNO 3 solution. Using K 2CrO 4 solution as indicator, the absorbing liquid is then titrated with AgNO 3 standard solution. The recovery efficiency of this method is in the range of 97% ~101%, and the relative standard deviation is about 1.8%~4.7%.
出处
《盐城工学院学报(自然科学版)》
CAS
2004年第1期54-57,共4页
Journal of Yancheng Institute of Technology:Natural Science Edition
关键词
有机物
微量氯
测定
氧瓶燃烧法
对苯醌
p-Benzoquinone
Microamount chlorine
Determination
Oxygen-flask combustion method