浸渍活性炭管采集溶剂解吸—气相色谱法测定空气中环氧乙烷

凌伟洁; 戎伟丰; 刘移民

doi:10.16369/j.oher.issn.1007-1326.2015.03.017

浸渍活性炭管采集溶剂解吸—气相色谱法测定空气中环氧乙烷

凌伟洁¹,
戎伟丰^2, ,,
刘移民^1,3, ,

1. 广州市职业病防治院, 广东广州 510620;
2. 广东省职业病防治院, 广东广州 510300;
3. 中山大学公共卫生学院, 广东广州 510080

基金项目:

广州市职业环境与健康效应实验室建设项目(编号:2014SY000020)

广州市医学重点学科建设项目(编号:穗卫科[2013]21号)。

广东省医学科研基金(编号:A2014072、B2013028)

广州市"121人才梯队工程"后备人才项目

广东省"十二五"医学重点专科(编号:粤卫函[2012]20号)

详细信息

作者简介:
凌伟洁(1984-),女,硕士研究生在读,主管医师,主要从事职业卫生检测与评价工作。

中图分类号: R134.4
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出版历程
- 收稿日期: 2014-12-13
- 修回日期: 2015-02-09

Determination of ethylene oxide by dissolved desorption-GC with sampling charcoal tube containing hydrobromic acid

1. Guangzhou Prevention and Treatment Centre for Occupational Disease, Guangzhou, Guangdong 510300, China;
2. Guangzhou Prevention and Treatment Centre for Occupational Disease, Guangzhou 510300, China;
3. School of Public Health, SUN Yatsen University, Guangzhou, Guangdong 510080, China

摘要

摘要: 目的研制用于捕集空气中环氧乙烷(EO)的固体吸附剂管,并建立配套的气相色谱法。方法基于EO能与氢溴酸发生开环反应生成2-溴乙醇的原理,采用研制的固体吸附剂管捕集空气中EO,在捕集过程中反应生成2-溴乙醇,经二甲基甲酰胺解吸、毛细管色谱柱分离后,运用电子俘获检测器对其进行检测。结果在0.12~97.29 mg/L范围内,EO质量浓度与实验测得峰面积呈线性关系,相关系数为0.999 97;批内精密度相对标准偏差(RSD)为1.27%~1.96%,批间精密度RSD为2.49%~3.83%;平均解吸效率为93.55%~98.49%;平均衍生效率为95.67%~97.38%;定量下限为0.03 mg/L;最低定量质量浓度为0.01 mg/m³(以采集3.0 L空气计)。样品在室温下可保存6 d,在4℃冰箱中至少可保存8 d,这比国家标准方法需要当天尽快测定这一要求有了明显改进。结论研制的固体吸附剂管及其配套的测定方法适合于空气中EO的采样以及检测。
- 固体吸附剂管 /
- 环氧乙烷 /
- 衍生反应 /
- 空气 /
- 气相色谱
+ English
Abstract: Objective New solid sorbent tubes were developed for capturing ethylene oxide (EO) in the air and the matched dissolved desorption-gas chromatography was established. Methods Based on the principle that EO could react with hydrobromic acid, the new solid sorbent tubes were developed, which were dipped with 5%(V/V) hydrobromic acid-methanol solution. The reaction product, generated in the process of capture,was desorbed with dimethylformamide, separated through capillary chromatographic column separation, and then detected by GC-ECD. Results The linear range of EO was 0.12-97.29 mg/L, and the related coefficients was 0.99997. The minimum quantification concentration was 0.01 mg/m³(sample volume was 3.0L).The average derivative efficiency was 95.67%-97.38%. The average desorption efficiency was 93.55%-98.49%. The intraday relative standard deviation (RSD) was 1.27%-1.96%, and the interday RSD was 2.49%-3.83%. The samples could be stored at room temperature for at least 6 days, and 8 days at 4 centigrade. Conclusion The new solid sorbent tubes containing hydrobromic acid were developed and could be applicable for collection of ethylene oxide (EO) in the air.
- solid sorbent tubes /
- ethylene oxide /
- derivative /
- air /
- gas chromatography

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参考文献(7)

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