| 气溶胶中正构烷烃单体化合物稳定碳同位素分布特征初步研究 |
| 摘要点击 895 全文点击 1505 投稿时间：1997-07-05 |
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| 中文关键词 稳定碳同位素 正构烷烃 清洁区 污染区 气溶胶 |
| 英文关键词 stable carbon isotope n-alkanes cleaning zone polluted area aerosol |
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| 中文摘要 |
| 不同来源的气溶胶中正构烷烃(C15-C31)稳定碳同位素的分布特征有比较明显的区别。以低等陆生植物为主的高原清洁区,其气溶胶中正构烷烃δ13C较轻(-29.93‰～-28.14‰),随碳数的增加,δ13C为较平缓的曲线；以高等植物为主的海滨清洁区,正构烷烃δ13C分布亦为较平缓的曲线,但δ13C较前者稍重,为-28‰～-27‰；人为污染严重的城市区,气溶胶正构烷烃δ13C为-29‰～-25‰,且随碳数的增加有较大的变化。 |
| 英文摘要 |
| There are obvious difference on stable carbon isotope(δ13C) distribution of individual n-alkanes(C15—C31) in aerosols from different sources.δ13C of individual n-alkanes in aerosols from plateau cleaning zone where mainly grow grass are light (-29.93‰～-28.14‰).In this zone,the curves of δ13C distribution are gentle and small change occurs with the increasing carbon numbers of n alkanes.δ13C of n-alkanes in aerosols from seashore cleaning zone where grow lot of plants are -28‰～-27‰ and slightly heavier than that from plateau cleaning zone.The curves of δ13C distribution in seashore aerosols are similar to that from plateau.δ13C of n-alkanes in aerosols from polluted urban area are -29‰～-25‰.δ13C have obvious changes with carbon numbers of n-alkanes.Their curves of δ13C distribution are different from those of cleaning zones. |
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