...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Geochemistry, geophysics, geosystems >The nonconservative property of dissolved molybdenum in the western Taiwan Strait: Relevance of submarine groundwater discharges and biological utilization
【24h】

The nonconservative property of dissolved molybdenum in the western Taiwan Strait: Relevance of submarine groundwater discharges and biological utilization

机译：台湾海峡西部溶解钼的非保守性质：海底地下水排放与生物利用的相关性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This study examined dissolved Mo and sedimentary Mo along with hydrochemical parameters in the western Taiwan Strait (WTS) in May and August 2012. The results demonstrate that dissolved Mo could be depleted of as high as 10-20 nM during our May sampling period when the nutrient-enriched Min-Zhe coastal current ceased and spring blooms developed. The negative correlation between Chl-a and dissolved Mo suggests the possible involvement of high algal productivity in removing dissolved Mo out of the water column. Specific oceanographic settings (little currents) permitted a high sedimentary enrichment of Mo (>6 mu g/g Mo) within the highly productive waters outside the Jiulong River mouth. Possibly, the high algal productivities and consequent organic matter sinks provide a pathway of Mo burial from water columns into sediments. Dissolved Mo was relatively high in groundwater samples, but we observed that submarine groundwater discharges (SGDs) only contributed to a relatively small percentage of the total dissolved Mo pool in WTS. It is probably attributable to the immediate removal of SGD-released Mo ions via adsorption onto newly formed Mn oxides once exposed to oxygenated seawater, followed by an elevated sedimentary Mo accumulation near the SGDs (approximate to 5 mu g/g). In addition to metal oxide particle scavenging and sulfide precipitation, we estimated that biological uptake along with Mo adsorption onto organic matter carriers could finally provide more than 10% of the annual sedimentary Mo accumulation in WTS.
机译：本研究于2012年5月和2012年8月检查了台湾海峡西部（WTS）的溶解态Mo和沉积态Mo以及水化学参数。结果表明，在我们5月份的采样期内，溶解态Mo可能耗竭高达10-20 nM。富含营养的闽浙沿海水流已经停止，春季花开。 Chl-a与溶解的Mo之间的负相关关系表明，高藻生产力可能与从水柱中去除溶解的Mo有关。特定的海洋学环境（小水流）使得九龙江河口以外高产水域中的Mo沉积富集度高（> 6μg/ g Mo）。可能的是，高藻类生产力和随之而来的有机质汇提供了从水柱到沉积物中的Mo埋藏的途径。地下水样品中溶解的Mo相对较高，但我们观察到海底地下水排放（SGDs）仅占WTS中总溶解Mo池的相对较小百分比。这可能归因于SGD释放的Mo离子一旦暴露在含氧海水中，就会通过吸附到新形成的Mn氧化物上而立即被去除，然后在SGDs附近沉积的Mo沉积增加（约5μg / g）。除了金属氧化物颗粒清除和硫化物沉淀，我们估计生物吸收以及Mo吸附到有机物载体上最终可以提供WTS年度沉积Mo积累的10％以上。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号