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| 气相色谱/质谱法测定空气中痕量偏二甲肼 | |
| 引用本文： | 曹晔,张光友,王力,彭清涛,刘建国.气相色谱/质谱法测定空气中痕量偏二甲肼[J].分析化学,2010,38(12). |
| 作者姓名： | 曹晔 张光友 王力 彭清涛 刘建国 |
| 作者单位： | 1. 中科院安徽光学精密机械研究所,合肥,230031;总装备部防疫大队,北京,100101 2. 总装备部防疫大队,北京,100101 3. 中科院安徽光学精密机械研究所,合肥,230031 |
| 基金项目： | 全军“十一五”项目(No.AJZZ07HX.01)资助 |
| 摘 要： | 建立了气相色谱/质谱法测定空气中痕量偏二甲肼的分析方法。以2-硝基苯甲醛为衍生化试剂,以含有衍生化试剂的甲醇溶液为吸收液,气体发生装置发生的偏二甲肼气样用吸收液直接吸收后,与衍生化试剂在甲醇中发生反应,对气体采样和衍生化反应条件进行了优化,考察了气相色谱/质谱法测定空气中痕量偏二甲肼的加标回收率为75%～92%;检出限(S/N=3)为0.019mg/L。采样2L时,最低检测浓度为9.5ng/m3。当采样流量为0.2L/min时,平均采样效率为99%。本方法灵敏快速,简便易行,可实现对空气中痕量偏二甲肼的检测。 |
| 关 键 词： | 偏二甲肼 2-硝基苯甲醛 衍生化反应 气相色谱/质谱法 |
Determination of Trace Unsymmetrical Dimethylhydrazine in Air by Gas Chromatographic/Mass Spectrometry |
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| CAO Ye,ZHANG Guang-You,WANG Li,PENG Qing-Tao,LIU Jian-Guo.Determination of Trace Unsymmetrical Dimethylhydrazine in Air by Gas Chromatographic/Mass Spectrometry[J].Chinese Journal of Analytical Chemistry,2010,38(12). | |
| Authors: | CAO Ye ZHANG Guang-You WANG Li PENG Qing-Tao LIU Jian-Guo |
| Institution: | CAO Ye 1,2,ZHANG Guang-You2,WANG Li2,PENG Qing-Tao2,LIU Jian-Guo1 1(Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Hefei 230031) 2(Epidemic Prevention Team,Headquarters of General Equipment,Beijing 100101) |
| Abstract: | A method was developed for the determination of trace unsymmetrical dimethylhydrazine(UDMH) in air by gas chromatographic/mass spectrometry.Choosing 2-nitrobenzaldehyde as derivatization reagent,methanol solution as absorber,trace unsymmetrical dimethylhydrazine in air generated by dynamic UDMH gas generating system was absorbed and directly enriched by solution of methanol with 2-nitrobenzaldehyde.Unsymmetrical dimethylhydrazine was then reacted with 2-nitrobenzaldehyde in methanol.The conditions of deriva... |
| Keywords: | Unsymmetrical dimethylhydrazine 2-Nitrobenzaldehyde Derivatization reaction Gas chromatography/mass spectrometry |
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