双抑制离子色谱法同时检测生活饮用水中9种阴离子  

Simultaneous determination of nine anions in drinking water by double suppressors ion chromatography

作　　者：陈微 谢宏斌[2] 徐小娜[1] 林茜 李菲菲 肖福兵 梁好 杨胜园[1] CHEN Wei;XIE Hong-bin;XU Xiao-na;LIN Xi;LI Fei-fei;XIAO Fu-bing;LIANG Hao;YANG Sheng-yuan(College of Public Health,University of South China,Hengyang 421001,China;Hengyang Center for Disease Control and Prevention,Hengyang 421001,China)

机构地区：[1]南华大学公共卫生学院,湖南衡阳421001 [2]衡阳市疾病预防控制中心,湖南衡阳421001

出　　处：《应用化工》2020年第2期513-517,共5页Applied Chemical Industry

基　　金：国家自然科学基金(11205085);湖南省自然科学基金面上项目(2018JJ2323);湖南省技术创新引导计划临床医疗技术创新引导项目(2017SK50218);湖南省教育厅科学研究项目资助(17C1357)。

摘　　要：以A Supp7为分析柱,碳酸盐溶液为淋洗液,电导检测器,化学抑制(MSM)和二氧化碳抑制(MCS)连续抑制,建立了一次进样同时测定生活饮用水中6种常见阴离子(F^-、Cl^-、NO^-2、NO^-3、PO4^3-、SO4^2-)和3种无机消毒副产物(BrO-3、ClO-2、ClO-3)的分析新方法,9种阴离子在21 min内完全出峰。9种离子分别在各自线性范围内呈良好的线性关系,相关系数r均>0.999,检出限分别为0.16~11.70μg/L。对4个自来水厂出厂水进行检测,发现4个水厂均有氯酸盐检出,亚氯酸盐和溴酸盐均未检出。结果表明,该方法简单、快速、灵敏度高、实用性强,可以有效地监控水中消毒副产物的变化以及无机污染物的变化。A new method was developed for the simultaneous determination of six common anions(F^-,Cl^-,NO^-2,NO-3,PO4^3-,SO4^2-)) and three inorganic disinfection by-products(BrO-3,ClO-2,ClO-3) with a single injection in drinking water.Application of A Supp7 column,carbonate system eluent,conductivity detector,Metrohm Suppressor Module(MSM) and Metrohm Carbon dioxide Suppressor(MCS) for continuous inhibition,9 anions completely detected in 21 min.High linearity(r>0.999) was observed for all target analytes for each respective concentration range.The limit of detection ranging from 0.16~11.7 μg/L.The method was applied for the anions detection in treated drinking water from the four waterworks.Chlorate was found in all the four waterworks and chlorite or bromate was not detected.Results showed the method is simple,rapid,high sensitive and practical,which can effectively monitor the changes in disinfection by-products and inorganic pollutants in water.

关 键 词：双抑制 离子色谱 消毒副产物 生活饮用水 阴离子 

分 类 号：TQ016.1[化学工程]