固体吸附管采样-离子色谱法测定工作场所空气中二氧化氮  

Detecting nitrogen dioxide in workplace air by ion chromatography with solid adsorption tube sampling

作　　者：杨展鸿 王伟辉[1] 吴川[1] 黄钧宜 阮小林[1] 董明[1] YANG Zhanhong;WANG Weihui;WU Chuang;HUANG Junyi;RUAN Xiaolin;DONG Ming(Guangdong Province Hospital for Occupational Disease Prevention and Treatmen;Guangdong Provincial Key Laboratory of Occupational Disease Prevention and Treatment,Guangzhou,Guangdong 510300,China)

机构地区：[1]广东省职业病防治院广东省职业病防治重点实验室,广东广州510300

出　　处：《中国职业医学》2018年第5期606-608,共3页China Occupational Medicine

基　　金：卫生标准制修订计划项目(20150714);国家临床重点专科建设项目(2011-09);广东省职业病防治重点实验室(2017B030314152);广东省化学中毒与核辐射突发事件医学救援应急技术研究中心(2016A020224005)

摘　　要：目的建立工作场所空气中二氧化氮的固体吸附管采样-离子色谱测定方法。方法采用分子筛固体吸附管采集空气样品,经质量分数为1. 50%三乙醇胺解吸液解吸并过滤后,经阴离子色谱保护柱分离再进行检测。结果亚硝酸根离子在质量浓度为0. 10~24. 00 mg/L时呈线性关系,相关系数为0. 999 9;方法检出限为0. 04mg/L。以采集48 L空气计算,二氧化氮最低检出浓度为0. 007 mg/m3。方法平均解吸效率为92. 42%~99. 98%,批内、批间相对标准偏差分别为0. 91%~3. 64%和0. 18%~1. 32%,样品在室温下至少可保存14 d。结论本方法适用于工作场所空气中二氧化氮的检测。Objective To establish a method of solid adsorption tube sampling-ion chromatography for detecting nitrogen dioxide in workplace air. Methods Air samples were collected by the solid adsorption tube of molecular sieve. After desorption with 1. 50% triethanolamine solution and filtration,the samples were separated by an ion chromatography column and then detected. Results The linearity range of nitrite ion was 0. 10-24. 00 mg/L,the correlation coefficiency was 0. 999 9,and the detection limit was 0. 04 mg/L. The minimum detectable concentration of nitrogen dioxide was 0. 007 mg/m^3（ air sample volume of 48 L）. The average desorption efficiency was 92. 42%-99. 98%. The within-run and between-run relative standard deviation were 0. 91%-3. 64% and 0. 18%-1. 32%,respectively. The samples could be preserved at room temperature for 14 days. Conclusion This method is suitable for detecting nitrogen dioxide in workplace air.

关 键 词：二氧化氮 固体吸附管 离子色谱 工作场所 空气 

分 类 号：R134.4[医药卫生—劳动卫生]