Dissolved zirconium in the North Pacific Ocean
Dissolved zirconium in the North Pacific Ocean
复制标题
北太平洋中溶解的锆
DOI：
10.1016/0016-7037(93)90157-r
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发表时间：
1993
影响因子：
5
通讯作者：
K. Orians
中科院分区：
文献类型：
--
作者：
Brad A McKelvey;K. Orians
海水中溶解的锆的皮摩尔水平进行测量使用的分析技术开发的Chelex-100提取/浓缩步骤和随后的同位素稀释电感耦合等离子体质谱法（ID-ICP-MS）检测。在这里，我们提出的第一个垂直剖面的Zr在海洋中，从中北太平洋，和一个水平的表面横断面横跨西太平洋。溶解锆的范围从12-95 pmol/kg的表面沃茨，然后随深度线性增加，在深水中的最大值为300 pmol/kg。垂直剖面显示出与硅在中间沃茨，具有较高的表面和底部沃茨的锆硅比的强相关性。有证据表明，溶解锆的海底来源和沿海来源的海洋。溶解的Ti和Be的比较显示出类似的深度依赖性，但在海水中的Zr-Ti和Zr-Be比平均地壳材料的贫化富集。锆似乎具有介于这两种元素之间的反应性。
Picomolar levels of dissolved Zr in seawater were measured using an analytical technique developed with a Chelex-100 extraction/concentration step and subsequent detection by isotope dilution inductively coupled plasma mass spectrometry (ID-ICP-MS). Here we present the first vertical profile of Zr in the oceans, from the central-North Pacific, and a horizontal surface transect across the western Pacific. Dissolved Zr ranges from 12–95 pmol/kg in the surface waters then increases linearly with depth to a maximum of 300 pmol/kg in the deep water. The vertical profile shows a strong correlation with Si in the mid-waters, with higher Zr Si ratios in the surface and bottom waters. There is evidence of both a bottom source and a coastal source of dissolved Zr to the oceans. A comparison with dissolved Ti and Be shows similar depth dependence, but an enrichment in Zr Ti and a depletion in Zr Be ratios in seawater relative to average crustal materials. Zirconium appears to have a reactivity intermediate between these two elements.