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在沿海河流中出现的新污染物REEs的发生,生态影响和暴露风险

Shunrong Ma^1,2,3, Guilin Han^1,2,3

¹State Key Laboratory of Geomicrobiology and Environmental Changes, China University of Geosciences (Beijing), Beijing 100083, China.

Environmental science. Processes & impacts

|December 23, 2025

概括

由于高科技需求,稀土元素 (REEs) 在河流中增加. 这项研究评估了REE风险,发现儿童最容易受到光线REE和Y的影响,但局部生态风险仍然存在.

科学领域:

环境化学环境化学
地质化学地质化学
生态毒理学生态毒理学

背景情况:

在技术上对稀土元素 (REE) 的需求不断增加,使其在水生生态系统中的存在增加.
对与河流中 REE 污染相关的生态和人类健康风险的理解有限.

研究的目的:

调查在江龙河流域的REEs的发生,分布和相关风险.
评估REE混合物和单个元素所带来的生态和人类健康风险.
建立一个框架,将地球化学特征与多层次风险评估联系起来.

主要方法:

来自江龙河流域的42个河水样本的分析.
使用反向距离权重 (IDW) 的空间分布分析.
使用冗余分析 (RDA) 确定影响因素.
生态和年龄差异化人类健康风险评估 (ΣREE,HQ,RQ).

主要成果:

观察到明显的空间异质性和REEs (重型与轻型REEs) 的分成模式.
自然地化学过程和人为活动都会影响REE度.
儿童对光REEs和Y的敏感性更高,尽管整体健康风险低于值.
在特定的支流中确定了局部的生态风险 (RQ > 1).

结论:

该研究强调了评估混合物毒性 (ΣREE) 与个人REE评估相比的重要性.
结果提供了关于REE地化学行为和沿海水生系统的累积风险机制的见解.
建立了一个综合框架,用于评估沿海环境中REE污染风险.

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