摘要
目的建立工作场所空气中二氧化硫分子筛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,以蒸馏水解吸,于弱碱体系中用过氧化氢氧化后直接经阴离子交换色谱住分离,电导检测器检测。结果二氧化硫在质量浓度为0.10~16.00 mg/L时呈线性关系,相关系数为0.999 8;方法检出限为0.02mg/L,最低检出浓度为0.01 mg/m3,平均解吸效率为96.53%~99.35%,批内、批间相对标准偏差分别为1.73%~3.65%和1.80%~4.46%,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硫的测定。
Objective To establish a detecting method for sulfur dioxide in workplace air by molecular sieve solid adsorption tube sampling and ion chromatography. Methods Air samples were collected by molecular sieve solid adsorption tubes, desorbed by distilled water, oxidized by hydrogen peroxide in weak base system, separated by anion exchange chromatography and detected by conductivity detector. Results The good linearity range of sulfur dioxide was 0. 10-16. 00 rag/L, and the correlation coefficient was 0. 999 8. The detection limit was 0. 02 rag/L, the minimum detectable concentration was 0. 01 mg/m3. The average desorption efficiency was 96. 53% -99.35%. The within-run and between-run relative standard deviations were 1.73%-3.65% and 1.80%-4. 46% respectively. The samples could be stored at room temperature for at least 14 days. Conclusion This method is suitable for detecting sulfur dioxide in workplace air.
作者
吴川
杨展鸿
戎伟丰
胡嘉雯
林佐侃
阮小林
WU Chuan, YANG Zhanhong, RONG Weifeng, HU Jiawen, LIN Zuokan, RUAN Xiaolin(Guangdong Province Hospital for Occupational Disease Prevention and Treatment, Guangdong Provincial Key Laboratory of Occupational Disease Prevention and Treatment, Guangzhou, Guangdong 510300, Chin)
出处
《中国职业医学》
CAS
北大核心
2018年第1期95-98,共4页
China Occupational Medicine
基金
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开放运行(2017年度考核合格)(20178030314152)
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)
关键词
二氧化硫
固体吸附管
离子色谱
工作场所
空气
Sulfur dioxide
Solid adsorption tube
Ion chromatography
Workplace
Air