浸渍活性炭管采集溶剂解吸-气相色谱法同时测定空气中3种环氧化合物

发布时间：2018-04-24 13:04

本文选题：固体吸附剂管 + 环氧乙烷　；参考：《中国职业医学》2015年01期

【摘要】：目的研制用于捕集空气中环氧乙烷(EO)、环氧丙烷(PO)和环氧氯丙烷(ECH)的固体吸附剂管,并建立配套的气相色谱测定方法。方法基于EO、PO和ECH均能与氢溴酸发生开环反应的原理,以5%(V/V)氢溴酸-甲醇溶液为浸渍溶液制备固体吸附剂管,用于捕集空气中EO、PO和ECH。在捕集过程中各自生成相应的反应产物,经二甲基甲酰胺解吸后,毛细管色谱柱分离,电子捕获检测器测定。结果本方法 EO、PO和ECH的质量浓度分别在0.24~48.79、0.36~72.05和0.18~35.42 mg/L线性关系良好,相关系数均为0.999 97;最低检出浓度分别为0.01、0.01和0.02 mg/m3,最低定量浓度分别为0.02、0.02和0.05 mg/m3(以采集3.0 L空气计);平均衍生效率分别为95.67%~97.38%、94.93%~98.27%和96.40%~98.24%;平均解吸效率分别为91.11%~94.78%、85.40%~88.03%和92.06%~95.32%;批内相对标准偏差分别为1.70%~2.87%、3.09%~3.42%和3.65%~4.47%,批间相对标准偏差分别为2.84%~5.48%、3.44%~3.88%和4.43%~5.65%;EO、PO和ECH样品在室温下至少可保存14 d。结论本方法研制的固体吸附剂管及其配套的浸渍活性炭管采集溶剂解吸-气相色谱法适用于工作场所空气、环境大气中EO、PO和ECH的采样以及检测。
[Abstract]:Objective to develop a solid adsorbent tube for capturing ethylene oxide (EO), propylene oxide (PO) and epichlorohydrin (ECH) in air, and to establish a complete gas chromatographic method. Methods based on the ring-opening reaction between EOBPO and ECH with hydrobromic acid, a solid adsorbent tube was prepared by impregnating 5% V / V hydrobromate and methanol solution, which could be used to trap EOBPO and ECH in air. The corresponding reaction products were formed in the process of trapping. After desorption of dimethylformamide, the capillary column was separated and determined by electron capture detector (ECD). Results the linear relationship between the mass concentration of EOO PO and ECH was 0.24 渭 m 48.79 渭 m 0.3672.05 and 0.18 渭 35.42 mg/L, respectively. The correlation coefficients were both 0.999 97, the lowest detectable concentration was 0.01 and 0.02 mg / m ~ 3, and the lowest quantitative concentration was 0.02 and 0.05 mg / m ~ (3), respectively. The average derivation efficiency was 98.27% and 96.4098.244,98.27% and 96.408.24%, respectively. The average desorption efficiency was 88.03% and 069.32%, respectively, and the average desorption efficiency was 88.03% and 069.32%, respectively, and the lowest quantitative concentration was 88.03% and 060.32%, respectively, and the average derivation efficiency was 98.27% and 96.4098.244.The average derivation efficiency was 98.27% and 96.4098.244.The average desorption efficiency was 88.03% and 060.32%, respectively. The relative standard deviations between batches were 2.84, 5.48 and 3.44%, respectively, and 4.88% and 4.43%, 5.65% and 3.65%, respectively. At room temperature, the samples of EONPO and ECH could be preserved for at least 14 days. Conclusion the solid adsorbent tube developed by this method and its matching impregnated activated carbon tube are suitable for the sampling and detection of EOPO and ECH in the workplace air and ambient atmosphere by means of solvent desorption and gas chromatography.
【作者单位】：中山大学公共卫生学院;广东省职业病防治院广东省职业病防治重点实验室;广州市第十二人民医院;广东药学院公共卫生学院;深圳市职业病防治院;
【基金】：广东省职业病防治重点实验室(2012A061400007) 广东省医学科研基金(A2014072,B2013028)
【分类号】：R122.1;O657.71

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