| 广州街道空气中挥发烃类特征和来源分析 |
| 摘要点击 1558 全文点击 2707 投稿时间：1998-10-27 |
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| 中文关键词 色谱/质谱 挥发烃类 空气污染 来源分析 因子分析 广州 固相吸附 热脱附 |
| 英文关键词 GC/MS volatile hydrocarbons air pollution source identification factor analysis Guangzhou sorbent adsorption thermodesorption |
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| 中文摘要 |
| 采用固相吸附热脱附色谱/质谱检测器联用的方法分析了广州市街道空气中的挥发有机物。样品采自广州市区街道的32个采样点,主要探讨了其中单环芳烃和正构烷烃的特征和可能来源;选取13种烃类化合物进行进一步的因子分析,结果表明,这些挥发烃类可能主要来自汽油机车、工业和柴油机车的排放。多元线性回归分析表明3种源对所选挥发烃类的平均贡献分别为64%、23%和13%。 |
| 英文摘要 |
| Airborne volatile hydrocarbons in Guangzhou streets were analysed by sorbent tubethermodesorption-GC/MSD method in this study.Samples were collected at 32 various street sites in Guangzhou,and the charateristics and possible sources of monocyclic aromatics and normal alkanes were investigated.By using factor analysis on 13 hydrocarbons,the sources of volatile hydrocarbons in Guangzhou were further identified,namely gasoline traffic,industry and diesel traffic.The results by multiple linear regression indicated that the percentage of volatile hydrocarbon contributions by these sources is 64%(gasoline traffic),23%(industry),13%(diesel traffic)respectively. |
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