| 毛细管GC/FID法测定空气中甲硫醇实验研究 |
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| 引用本文： | 汪立忠,陆雍森,杨琦,陈正夫,叶伯明,王文领.毛细管GC/FID法测定空气中甲硫醇实验研究[J].环境科学,1997,18(3):64-66. |
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| 作者姓名： | 汪立忠 陆雍森 杨琦 陈正夫 叶伯明 王文领 |
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| 作者单位： | 同济大学环境工程学院，污染控制和资源化研究国家重点实验室，复旦大学化学系 |
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| 摘 要： | 研究了空气中甲硫醇（ＣＨ３ＳＨ）的采样，液氮冷冻浓缩，热解吸和毛细管柱ＧＣ／ＦＩＤ的色谱分离分析方法，在选定条件下，线性范围为０．２－２００μｇ检测下限约０．２μｇ，回收率为９２．６％，重复实验变异系数３．２％，可以满足空气中ＣＨ３ＳＨ的测定，应用于某城市污水厂及污水沟周围空气中甲硫醇的测定，并以ＣＨ３ＳＨ为代表计算了空气的恶臭度，其分布规律可以得到合理的解释，取得了较为满意的结果。
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| 关 键 词： | 甲硫醇 GC／FID分析 采样 恶臭 空气 |
| 收稿时间： | 1996/10/30 0:00:00 |
Determination of CH3SH in Air Using Capillary GC/FID |
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| Wang Lizhong,Lu Yongsen and Wang Wenling.Determination of CH3SH in Air Using Capillary GC/FID[J].Chinese Journal of Environmental Science,1997,18(3):64-66. |
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| Authors: | Wang Lizhong Lu Yongsen and Wang Wenling |
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| Institution: | Key State Lab. of Pollution Control and Resources Reuse, School of Environ.Eng., Tongji University, Shanghai 200092;Key State Lab. of Pollution Control and Resources Reuse, School of Environ.Eng., Tongji University, Shanghai 200092;Key State Lab. of Pollution Control and Resources Reuse, School of Environ.Eng., Tongji University, Shanghai 200092;Key State Lab. of Pollution Control and Resources Reuse, School of Environ.Eng., Tongji University, Shanghai 200092;Key State Lab. of Pollution Control and Resources Reuse, School of Environ.Eng., Tongji University, Shanghai 200092;Department of Chemistry, Fudan University, Shanghai 200433 |
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| Abstract: | The analytical procedure for methylmercaptan in air was investigated which involves four phases of sampling,low temperature concentration with liquid nitrogen,thermal separation and then capillary column GC/FID analysis.Under the conditions selected, a method linear range of 0.2-200 ng was obtained with a minimal detection limit of 0.2 ng.The recovery was about 92.6% with a relative standard deviation of 3.2%. This Procedure was applied to determine the concentration of methylmercaptan in the environmental air around a waste water plant and a polluted river successfully. The odour strength of the air at different sampling points was also calculated, and the distribution characteristic with methylmercaptan sounded reasonable. |
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| Keywords: | methylmercaptan GC/FID analysis sampling malodor |
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