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首页> 外文期刊>Earth and Planetary Science Letters: A Letter Journal Devoted to the Development in Time of the Earth and Planetary System >Osmium behavior in estuaries: the Lena River example
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Osmium behavior in estuaries: the Lena River example

机译：河口的behavior行为：勒纳河例子

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摘要

The behavior of dissolved osmium at the river/ocean interface was studied in the Lena River estuary. Dissolved osmium removal is observed at very low salinities. The loss is estimated to be 28% of the dissolved concentration of the river. The removal cannot be related to the flocculation of iron oxide-organic matter colloids, but occurs simultaneously with the loss of aluminum. The proposed mechanism is the adsorption of dissolved osmium on suspended particles in the maximum turbidity zone. If this is correct, then the removal of osmium in estuaries is probably a common phenomenon. No contribution of osmium from the sediments is detected but neither the samples nor the stratified nature of the estuary are favorable to the study of a flux from sediments. If this finding can be generalized, the estimated global riverine flux of osmium to the ocean has to be recalculated and the osmium residence time in the ocean would change from 3.3 * 10~4 yr to 4.6 * 10~4 yr.
机译：在利纳河河口研究了在河流/海洋界面溶解的的行为。在非常低的盐度下就可以观察到溶解的的去除。损失估计为河流溶解浓度的28％。去除与氧化铁-有机物胶体的絮凝无关，但与铝的损失同时发生。所提出的机理是最大浊度区中溶解的suspended在悬浮颗粒上的吸附。如果这是正确的话，那么在河口去除removal可能是一种普遍现象。没有检测到沉积物中contribution的贡献，但是样品和河口的分层性质都不利于研究沉积物中的通量。如果可以概括这一发现，就必须重新计算估计的全球河流向海洋的river通量，并且os在海洋中的停留时间将从3.3 * 10〜4年变为4.6 * 10〜4年。

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