Trace element solubility in wet deposition: Investigating the evolution at the intra-event scale

IF 8.2 1区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Science of the Total Environment Pub Date : 2025-01-25 DOI:10.1016/j.scitotenv.2024.178308

Thomas Audoux, Benoit Laurent, Servanne Chevaillier, Karine Desboeufs

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Abstract

Understanding the solubility dynamics of elements during wet deposition is crucial for assessing their environmental impacts. In this study, we investigated the solubility behaviour of various elements originating from natural and anthropogenic sources using a dataset of 106 samples describing the sequential collections of 8 rainfall events. Our results reveal distinct solubility patterns depending on the type of event, with mineral-dust events exhibiting lower solubility and anthropogenic events displaying higher solubility, in relation with dust content and pH. The study of intra-event solubility reveals variations over short periods during a rain event, which evolve differently according to the chemical elements and depend mainly on the origin of the aerosols scavenged by the rain. In the case where the aerosol origin is the same during a rain event, the precipitation characteristics and in-cloud scavenging mechanisms play a role on the elemental solubility as the rainfall progresses.

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微量元素在湿沉积中的溶解度：在事件内尺度上的演化研究。

了解湿沉积过程中元素的溶解度动态对评估其环境影响至关重要。在这项研究中，我们利用106个样品的数据集研究了来自自然和人为来源的各种元素的溶解度行为，这些样品描述了8个降雨事件的连续收集。我们的研究结果揭示了不同的溶解度模式，这取决于事件的类型，矿物粉尘事件的溶解度较低，而与粉尘含量和ph有关的人为事件的溶解度较高。事件内溶解度的研究揭示了降雨事件中短时间内的变化，这种变化根据化学元素的不同而不同，主要取决于雨水清除的气溶胶的来源。在降雨过程中气溶胶来源相同的情况下，随着降雨的进行，降水特征和云内清除机制对元素溶解度起作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Science of the Total Environment 环境科学-环境科学

CiteScore

17.60

自引率

10.20%

发文量

8726

审稿时长

2.4 months

期刊介绍： The Science of the Total Environment is an international journal dedicated to scientific research on the environment and its interaction with humanity. It covers a wide range of disciplines and seeks to publish innovative, hypothesis-driven, and impactful research that explores the entire environment, including the atmosphere, lithosphere, hydrosphere, biosphere, and anthroposphere. The journal's updated Aims & Scope emphasizes the importance of interdisciplinary environmental research with broad impact. Priority is given to studies that advance fundamental understanding and explore the interconnectedness of multiple environmental spheres. Field studies are preferred, while laboratory experiments must demonstrate significant methodological advancements or mechanistic insights with direct relevance to the environment.