| 毛细管低温吸附气相色谱法同时测定空气中痕量甲硫醇和硫化氢 |
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| 引用本文： | 安裕敏,王兴宁,张明时,曹桂红.毛细管低温吸附气相色谱法同时测定空气中痕量甲硫醇和硫化氢[J].环境监测管理与技术,2008,20(3):35-37. |
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| 作者姓名： | 安裕敏 王兴宁 张明时 曹桂红 |
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| 作者单位： | 1. 贵州省环境科学研究设计院,贵州,贵阳,550002
2. 贵州师范大学,贵州省山地环境重点实验室,贵州,贵阳,550001 |
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| 摘 要： | 建立了毛细管低温吸附气相色谱同时测定空气中痕量甲硫醇和硫化氢的方法，介绍了冷冻吸附装置的制备方法和样品冷凝吸附流程。甲硫醇和硫化氢分别在0.467ng～5.16ng和0.327ng～3.60ng范围内线性良好，当进样体积为1L时，检出限为0．205μg/m^3和0．213μg／m^3，空白加标平均回收率为88．6％和90．2％，RSD为6.0％和6．5％。
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| 关 键 词： | 甲硫醇 硫化氢 毛细管 低温吸附 气相色谱法 空气 |
Determ ination of Trace M ethylM ercaptan and Hydrogen Sulfide by Capillary Cryogenic Adsorption Gas Chromatography |
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| AN Yu-min,WANG Xing-ning,ZHANG Ming-shi,CAO Gui-hong.Determ ination of Trace M ethylM ercaptan and Hydrogen Sulfide by Capillary Cryogenic Adsorption Gas Chromatography[J].The Administration and Technique of Environmental Monitoring,2008,20(3):35-37. |
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| Authors: | AN Yu-min WANG Xing-ning ZHANG Ming-shi CAO Gui-hong |
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| Institution: | AN Yu-min , WANG Xing-ning , ZHANG Ming-shi , CAO Gui-hong (1. Guizhou Institute of Environmental Science and Designing, Guiyang, Guizhou 550002, China; 2. Laboratory for Mountainous Environment, Guizhou Normal University, Guiyang, Guizhou 550001, China) |
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| Abstract: | The method of a low-temperature adsorption capillary GC was established for determination of trace methyl mercaptan and hydrogen sulfide in the air. The sample preparation method of frozen adsorption devices and condensate absorption process were described. The good linearities were achieved in methyl mercaptan at 0. 467 ng - 5.16 ng and in hydrogen sulfide at 0. 327 ng - 3.60 ng. The detection limit of methyl mercaptan was 0. 205 μg/m^3 , and detection limit of hydrogen sulfide was 0. 213 μ g/m^3 for 1 L sample. The average blank recoveries were 88.6% and 90.2% , RSD were 6.0% and 6.5% respectively. |
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| Keywords: | Methyl mercaptan Hydrogen sulfide Capillary Cryogenic adsorption Gas chromatography Air |
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