| 毛细管GC/FID法测定空气中甲硫醇实验研究 |
| 摘要点击 666 全文点击 1885 投稿时间：1996-10-30 |
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| 中文关键词 甲硫醇 GC/FID分析 采样 恶臭 |
| 英文关键词 methylmercaptan GC/FID analysis sampling malodor |
| 作者 | 单位 | | 汪立忠 | 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, 上海200092 | | 陆雍森 | 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, 上海200092 | | 杨琦 | 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, 上海200092 | | 陈正夫 | 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, 上海200092 | | 叶伯明 | 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, 上海200092 | | 王文领 | 复旦大学化学系, 上海200433 |
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| 中文摘要 |
| 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。 |
| 英文摘要 |
| 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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