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Updated: Jul 20, 2025

Automated 90Sr Separation and Preconcentration in a Lab-on-Valve System at Ppq Level

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Published on: June 6, 2018

作为90Sr的主要来源的淡地下水排放到沿海海洋

Fule Zhang^1,2, Jinlong Wang¹, Dekun Huang²

¹State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200241, China.

Environmental science & technology

|August 2, 2023

概括

海底地下水排放 (SGD) 是沿海水域中重要的,被忽视的-90 (Sr) 源. 这项研究强调了考虑地下途径在沿海环境中⁹⁰Sr运输和风险评估的重要性.

科学领域:

环境科学环境科学
海洋化学海洋化学
放射化学放射化学是指辐射化学.

背景情况:

-90 (Sr) 在海洋环境中的来源和行为尚未完全理解.
沿海海洋是动态系统,受到各种淡水输入的影响.

研究的目的:

为了研究90Sr在不同沿海水类型中的分布.
评估海底地下水排放 (SGD) 作为潜在的沿海⁹⁰Sr.
评估Sr.90来源于SGD对沿海生态系统的贡献.

主要方法:

收集并分析了中国东南部 (2019-2021) 三个海湾的沿海淡地下水,河水,孔水和海水样本.
在所有水样品中测量了90Sr活性.
评估了90Sr沿盐度梯度的混合行为.
将估计的SGD衍生⁹⁰Sr流与河流输入进行比较.

主要成果:

沿海淡地下水中的Sr活性高于河水和海水中的Sr活性.
孔水中的Sr活性与相邻的海水相似.
在河水和海水之间观察到⁹⁰Sr的非保守混合.
新鲜的SGD被确定为沿海海水的90Sr的重要来源,流量与河流来源相当或超过.

结论:

海底淡水排放是沿海海洋中90Sr的主要,以前被低估的来源.
通过SGD进行90Sr的地下运输需要在沿海监测和风险评估中加以考虑,特别是在核设施附近.

关键词:

90Srr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 90Sr 行为行为行为行为行为.沿海海洋沿海海洋淡水地下水排放情况这是源头的源头.

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