作为环境中天然胶体竞争者的纳米塑料:钆络合物的案例。

IF 8.1 2区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES Chemosphere Pub Date : 2024-12-01 DOI:10.1016/j.chemosphere.2024.143810
Celia Trujillo , Aubin Thibault de Chanvalon , Francisco Laborda , Ryszard Lobinski , Javier Jimenez-Lamana
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引用次数: 0

摘要

本研究探讨了纳米塑料是否是环境条件下稀土元素(Gd)迁移的重要因素。通过结合培养、超滤和 ICPMS 分析的实验设计,研究了纳米塑料浓度、钆浓度、与有机配体的络合度、pH 值、离子强度和天然胶体竞争者的出现等因素的重要影响。我们特别观察到,即使在海水中,纳米塑料上也能吸附约一半的钆。令人惊讶的是,在纳米塑料浓度较低(10 μg/L)的情况下,吸附作用更为明显,这可能是因为纳米塑料能阻止纳米粒子的同聚。这些是纳米塑料吸附过程与微塑料吸附过程有本质区别的第一批实验线索。
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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Nanoplastics as competitors of natural colloids in the environment: The case of gadolinium complexes
This study investigates whether nanoplastics are significant contributor of rare earth elements (Gd) transportation under environmental conditions. Important effects of nanoplastic concentration, Gd concentration, complexation with organic ligands, pH, ionic strength and occurrence of natural colloids competitor were studied thanks to an experimental design combining incubation follow by ultrafiltration and ICPMS analyses. In particular, we observed that even in sea water, about half of the gadolinium can be adsorbed on nanoplastics. Surprisingly, the adsorption is more pronounced at low concentration of nanoplastic (10 μg L−1) probably because it prevents homoaggregation of nanoparticles. These are the first experimental clues that adsorption on nanoplastics is governed by fundamentally different processes than adsorption on microplastics.
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来源期刊
Chemosphere
Chemosphere 环境科学-环境科学
CiteScore
15.80
自引率
8.00%
发文量
4975
审稿时长
3.4 months
期刊介绍: Chemosphere, being an international multidisciplinary journal, is dedicated to publishing original communications and review articles on chemicals in the environment. The scope covers a wide range of topics, including the identification, quantification, behavior, fate, toxicology, treatment, and remediation of chemicals in the bio-, hydro-, litho-, and atmosphere, ensuring the broad dissemination of research in this field.
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