ZENG Li-lan,LEI Ping,WANG Wei-kang.Online Generation Ion Chromatography for Determination of Nine Indicators Such as Iodide in Water[J].China Water & Wastewater,2022,38(18):134-138.
Online Generation Ion Chromatography for Determination of Nine Indicators Such as Iodide in Water
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第38卷
Number:
第18期
Page:
134-138
Column:
Date of publication:
2022-09-17
- Keywords:
- drinking water sources; drinking water; ion chromatography; iodide; glyphosate; perchlorate
- Abstract:
- To meet the requirements of perchlorate and iodide detection in water supply industry, an online generation ion chromatography method was developed for the detection of nine compounds such as iodide, glyphosate, perchlorate, bromide, fluoride, chloride, nitrate nitrogen, sulfate and phosphate in 20 min. The detection limits of iodide, glyphosate, perchlorate, bromide were 0.002 mg/L, 0.005 mg/L, 0.001 mg/L and 0.004 mg/L, respectively, and those of other five compounds met the requirements of relevant standards. At the quantitative limit level，the average recoveries were 96.3%-104% and the relative standard deviations were 0.68%-3.79%. The method is simple and sensitive, and can be applied to analyze drinking water and source water efficiently. The method was applied to detect the relevant indexes of source water in a city in south China. Iodide and bromide were widely detected in the source water with average concentrations of 0.028 mg/L and 0.037 mg/L, respectively, and high iodine concentration was detected in particular reservoir. Perchlorate and glyphosate were not detected. Fluoride, chloride, nitrate nitrogen, sulfate and other indicators met the limitations specified in surface water class Ⅱ standard. Water samples from 50 waterworks were tested. Iodide, perchlorate, glyphosate, bromide and phosphate were not detected, and other indicators met the requirements specified in drinking water quality standard. It is suggested to pay attention to the risk of iodine and bromine disinfection byproducts in water supply process.
Last Update:
2022-09-17