| 稳定同位素用于闽南夏季云下洗脱过程的研究 |
| 摘要点击 768 全文点击 1017 投稿时间：1997-05-20 |
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| 中文关键词 SO2 云下洗脱 稳定同位素 平衡模式 闽南 夏季 |
| 英文关键词 SO2 washout stable isotope model Mingnan Area summer |
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| 中文摘要 |
| 使用稳定同位素方法对闽南夏季云下洗脱过程进行研究;对闽南夏季降水中稳定同位素丰度比进行了测试。氢氧同位素丰度比分析发现,降水氢氧同位素丰度比存在较大分馏,但同一降水云系中δD/δ18O值是稳定的,可以作为判别降水来源的特征量。对降水中硫同位素丰度比分析发现,当大气中气溶胶和气体硫同位素均呈负值时,降水中富集34S,反之相反。并使用稳定同位素平衡模型估算事件型降水云下洗脱过程的作用,厦门前期降水云中、云下洗脱硫的比例分别为19.5%和80.5%,中期降水云中、云下洗脱硫的比例分别为32.3%和57.7%,后期降水云中、云下洗脱硫的比例分别为53%和47%,漳州云中,云下洗脱比例接近。 |
| 英文摘要 |
| The stable isotope was used for evaluating washout process in summer at Mingnan Area.Abundance ratio of stable isotope of rainwater was determined in summer at Mingnan.It was found that there was a large isotope fraction in rainwater,but the value of δD/δ18O was stable within common cloud,and which could be used as characteristic variation to distinguish source of rainwater.According to analysis of sulfur isotope,if ratios of sulfur isotope were negative in both aerosol and SO2,it would be abundant 34S in rainwater.A stable isotope model was used to study washout process,the result showed that ratios of rainout and washout sulfur in begining are 19.5%,80.5% respectively,then the ratio become 32.3%,57.7%,the ratio are 53%,47% in the end.The ratios of two processes were almost equal in Zhangzhou. |
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