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海洋中长期银污染:棕藻对总Ag和纳米颗粒的洞察

Carme Pacín¹, Massimo Lazzari¹, J Ángel Fernández²

¹CIQUS Center, Department of Physical Chemistry, Universidade de Santiago de Compostela, Santiago de Compostela, 15782, Spain.

|February 25, 2026

概括

这项研究追踪了超过30年的棕藻中的银和银纳米粒子 (AgNPs). 银和AgNP水平都下降了,这表明藻类可能会从溶解的银中形成AgNP,而不仅仅是积累它们.

科学领域:

海洋生物学海洋生物学
环境化学环境化学
纳米技术纳米技术

背景情况:

银纳米粒子 (AgNPs) 的环境释放量正在增加,但它们对海洋生物群的影响尚不清楚.
棕藻的金属积累已知,但在自然环境中缺乏直接的AgNP分析.
海洋生物中总银 (Ag) 的数据很少,尽管Ag的毒性和生物放大风险.

研究的目的:

评估Fucus spp.中总Ag和AgNP的长期趋势. 在加利利海岸沿线.
在全球范围内调查棕藻中的Ag和AgNP度.
确定海洋生态系统中AgNP的来源和形成机制.

主要方法:

分析了446个Fucus spp.的种类. 采样 (1990-2021年) 总的年龄.
在三个时间点 (1990,2005-2007,2021) 的10个地点的30个样本中评估了AgNP.
进行了关于棕藻中的Ag度的全球文献综述.

主要成果:

在Fucus spp.中总的Ag. 在过去的30年里,美国人口数量下降了58.1%.
自20世纪80年代以来,棕藻中的全球Ag度呈现下降趋势.
随着时间的推移,AgNP度下降,与总Ag正相关,这表明局部形成.

结论:

棕藻作为Ag污染的环境指标.
藻类可能在溶解的银中形成AgNP中发挥作用.
由于其持久性和生物放大潜力,对AgNP的持续监测至关重要.

关键词:

生物监测生物监测沿海生态系统的生态系统危险元素危险元素海洋污染海洋污染海藻是一种海藻.时间趋势时间趋势

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