| 潮间带沉积物/大气Hg的释放的模拟研究 |
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| 引用本文： | 单长青,刘汝海,单红仙.潮间带沉积物/大气Hg的释放的模拟研究[J].海洋环境科学,2007,26(5):417-421. |
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| 作者姓名： | 单长青 刘汝海 单红仙 |
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| 作者单位： | 中国海洋大学,海洋环境与生态教育部重点实验室,山东,青岛,266003 |
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| 基金项目： | 国家自然科学基金
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国家海洋局资助项目 |
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| 摘 要： | 研究了潮间带沉积物中的Hg向大气的释放,结果表明光照造成沉积物中的Hg快速向大气释放.光照8 h后,海泊河口和黄河口沉积物释放到大气中的Hg分别占58%和51%,其释放通量总体上遵循先升高后降低的规律,前者在13:00～14:00达到最大值2 830μg/(m2·h),后者在12:00～13:00达到最大值73μg/(m2·h);海泊河口沉积物Hg的释放通量与大气温度、沉积物温度和光照强度的相关系数分别为0.83(P＜0.05)、0.98(P＜0.01)和0.73(P＜0.05),黄河口沉积物Hg的释放通量与大气温度、沉积物温度和光照强度的相关系数分别为0.73(P＜0.05)、0.80(P＜0.05)和0.81(P＜0.01),温度、光照对沉积物Hg的释放有重要的影响.
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| 关 键 词： | 潮间带 沉积物 大气 Hg 释放 潮间带 河口沉积物 大气温度 模拟研究 atmosphere sediment mercury release research 影响 相关系数 光照强度 最大值 规律 释放通量 快速 结果 |
| 文章编号： | 1007-6336（2007）05-0417-05 |
| 收稿时间： | 2005-12-26 |
| 修稿时间： | 2006-03-03 |
Simulation research on release of mercury from sediment to atmosphere in inter-tide |
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| SHAN Chang-qing,LIU Ru-hai,SHAN Hong-xian.Simulation research on release of mercury from sediment to atmosphere in inter-tide[J].Marine Environmental Science,2007,26(5):417-421. |
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| Authors: | SHAN Chang-qing LIU Ru-hai SHAN Hong-xian |
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| Abstract: | The release of mercury from sediment to atmosphere was studied in inter-tide.Mercury in the sediment rapidly released to atmosphere under solar radiation.After 8h,58 percentage of Hg was released in Haipo Estuary sediment and 51 in Huanghe Estuary sediment.The fluxes were increased at first,and then decreased.The maximum Hg flux in Haipo Estuary is 2 830 g/ (m2 h) at 13:00~14:00,and 73 g/(m2 h) at 12:00~13:00 in Huanghe Estuary.The correlation coefficient between mercury flux and air temperature,soil temperature and solar radiation are 0.83(P<0.05),0.98(P<0.01) and 0.73(P<0.05) in Haipo Estuary,and 0.73(P<0.05),0.80(P<0.05) and 0.81(P<0.01) in Huanghe Estuary.Temperature and solar radiation play an important role for the mercury release. |
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| Keywords: | inter-tide sediment atmosphere mercury release |
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