天津科技大学学报2018，Vol.33Issue(1)：36-40,65,6.DOI:10.13364/j.issn.1672-6510.20160269
离子膜烧碱生产工艺盐水中微量碘的催化动力学分析方法研究
Tracing Iodine in the Brine with Catalytic Kinetic Method during Ionic Membrane Caustic Soda Production
摘要
Abstract
An analytical method of tracing iodine in high salinity brine was established based on As(Ⅲ)-Ce4+ catalytic spectrophotometry for determining iodine in the brine during ionic membrane caustic soda production．The consumption of arsenous acid and analysis time was obviously decreased with this method，while the linear range for iodine determination was extended to 1.5,mg/L with correlation coefficient r＝0.999,8 and the detection limit was no more than 10,μg/L．The recovery rate of iodine into the raw brine and refined brine by using the standard addition method，was 95.0％-104.0％,and the relative standard deviation(RSD)was less than 5％．The interference of normally coexisting ions such as Na+，Cl- and SO42- was not found obviously，unless the concentration of H2O2 was larger than 2％,．The proposed method is easy to operate and causes low pollution，so it is suitable for tracing iodine not only in brine during ionic membrane caustic soda production，but also in seawater and other brine samples with complex matrix.关键词
砷铈催化动力学法/卤水/碘/离子膜烧碱Key words
As(Ⅲ)-Ce4+ catalytic spectrophotometry/brine/iodine/ionic membrane caustic soda分类
化学化工引用本文复制引用
廖英,余晓平,胡海清,郭亚飞,邓天龙..离子膜烧碱生产工艺盐水中微量碘的催化动力学分析方法研究[J].天津科技大学学报,2018,33(1):36-40,65,6.基金项目
天津市高等学校科技发展基金计划项目(20140511) （20140511）
中国博士后科学基金项目(2016M592828)本研究还受到国家自然科学基金(U14076113)、天津市应用基础与前沿技术研究计划项目(15JCQNJC08300)资助,在此一并致谢！ （2016M592828）
