Life cycle toxicity evaluation of coated magnetite nanoparticles to the amphipod Hyalella curvispina

IF 4.1 2区环境科学与生态学 Q1 MARINE & FRESHWATER BIOLOGY

Aquatic Toxicology Pub Date : 2025-05-09 DOI:10.1016/j.aquatox.2025.107406

Nuria Guadalupe Espert , Jorgelina Luján Villanova , Sofía Ayelén Vedelago , Mariana Noelia Mardirosian , Malena Morell , Cecilia Inés Lascano , Andrés Venturino

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引用次数: 0

Abstract

The presence of organic pollutants in aquatic environments requires effective solutions to reduce their concentration. In this context, the development of environmental remediation technologies using nanomaterials has emerged as a promising alternative. However, prior to their application, it is necessary to evaluate the toxicity of these materials along their lifecycle. The aim of this study was to analyze the acute toxicity and behavioral alterations triggered by exposure to magnetite nanoparticles coated with oleic acid (NPOA), to anthracene (ANT) as a model contaminant to be removed, and to the different remaining products after a simulated NPOA remediation procedure of ANT-contaminated water in the native amphipod Hyalella curvispina. Our results show no significant mortality with ANT up to 2 mg/L; however, behavioral alterations were observed from 24-h exposure, but they diminished over time along with ANT media concentration. A trend towards increased mortality with rising concentrations of NPOA was observed up to 10 mg/L, and stabilized between 25 and 100 mg/L. Additionally, NPOA exposure caused behavioral alterations that increased with concentration and remained along the 96 hours of the bioassay. The combined assays showed no significant differences between the combined NPOA-ANT, the remaining water post-remediation and the control. In conclusion, neither ANT and NPOA, individually or combined, were lethal for adult H. curvispina individuals. Nonetheless, they impacted behavior causing stillness, altered pleopodal locomotion frequencies and decreased response to stimuli, which may affect their survival in the environment.

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包覆磁铁矿纳米颗粒对两足动物曲面玻璃藻的生命周期毒性评价

水生环境中有机污染物的存在需要有效的解决方案来降低其浓度。在这种背景下，利用纳米材料开发环境修复技术已成为一种有希望的替代方案。然而，在应用之前，有必要评估这些材料在其生命周期中的毒性。本研究的目的是分析油酸（NPOA）包裹的磁铁矿纳米颗粒、作为拟去除污染物的蒽（ANT），以及在模拟NPOA修复被ANT污染的水后，对天然两足动物曲线透明藻（Hyalella curvispina）的急性毒性和行为改变。我们的研究结果显示，当ANT浓度达到2 mg/L时，没有明显的死亡率；然而，24小时暴露后观察到行为改变，但随着时间的推移，这些改变随着ANT介质浓度的增加而减少。NPOA浓度上升至10 mg/L，死亡率呈上升趋势，在25至100 mg/L之间趋于稳定。此外，NPOA暴露引起的行为改变随着浓度的增加而增加，并在生物测定的96小时内保持不变。联合检测结果显示，NPOA-ANT组合、修复后剩余水和对照组之间无显著差异。综上所述，无论是单独还是联合使用，ANT和NPOA对弯纹田鼠成虫均无致死作用。然而，它们会影响行为，导致静止，改变多肢运动频率，降低对刺激的反应，这可能会影响它们在环境中的生存。

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

Aquatic Toxicology 环境科学-毒理学

CiteScore

7.10

自引率

4.40%

发文量

250

审稿时长

56 days

期刊介绍： Aquatic Toxicology publishes significant contributions that increase the understanding of the impact of harmful substances (including natural and synthetic chemicals) on aquatic organisms and ecosystems. Aquatic Toxicology considers both laboratory and field studies with a focus on marine/ freshwater environments. We strive to attract high quality original scientific papers, critical reviews and expert opinion papers in the following areas: Effects of harmful substances on molecular, cellular, sub-organismal, organismal, population, community, and ecosystem level; Toxic Mechanisms; Genetic disturbances, transgenerational effects, behavioral and adaptive responses; Impacts of harmful substances on structure, function of and services provided by aquatic ecosystems; Mixture toxicity assessment; Statistical approaches to predict exposure to and hazards of contaminants The journal also considers manuscripts in other areas, such as the development of innovative concepts, approaches, and methodologies, which promote the wider application of toxicological datasets to the protection of aquatic environments and inform ecological risk assessments and decision making by relevant authorities.