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| 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 |
| Determ ination of Trace M ethylM ercaptan and Hydrogen Sulfide by Capillary Cryogenic Adsorption Gas Chromatography |
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| DOI： |
| 中文关键词: 甲硫醇 硫化氢 毛细管 低温吸附 气相色谱法 空气 |
| 英文关键词: Methyl mercaptan Hydrogen sulfide Capillary Cryogenic adsorption Gas chromatography Air |
| 基金项目:国家自然科学基金资助项目 (20367002) |
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| 中文摘要: |
| 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0.467 ng ～ 5.16 ng和0.327 ng ～3.60 ng范围内线性良好, 当进样体积为1 L 时, 检出限为0.205 μ g/m 3 和0.213 μ g/m 3 , 空白加标平均回收率为 88.6% 和 90.2% ,RSD 为6.0% 和 6.5% 。 |
| 英文摘要: |
| The method ofa low -temperature adsorption capillary GC wasestablished for determination of trace methyl mercaptan and hydrogen sulfidein the air. The samplepreparation method offrozen adsorption de vicesand condensate absorption processwere described. The goodlinearitieswere achievedin methylmercaptan at0.467 ng ～ 5.16 ng andin hydrogen sulfide at0.327 ng ～ 3.60 ng. The detection limitofmethyl mercaptan was0.205 μ g/m 3 , and detectionlimitofhydrogen sulfide was0.213 μ g/m 3 for1 L sample. The average blank recoveries were88.6% and 90.2% , RSD were 6.0% and 6.5% respectively. |
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