基于混合纳米材料的地表水中草甘膦间接电化学传感:一种很有前途的环境监测方法。

IF 4.3 3区 环境科学与生态学 Q1 CHEMISTRY, ANALYTICAL Environmental Science: Processes & Impacts Pub Date : 2023-10-16 DOI:10.1039/D3EM00355H
Elisabeta-Irina Geana, Angela Mihaela Baracu, Marius C. Stoian, Oana Brincoveanu, Cristina Pachiu and Livia Alexandra Dinu
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引用次数: 0

摘要

草甘膦(GLY)是一种广泛使用的农药,即使在很小的浓度下也会对人类健康构成重大威胁。在这项研究中,我们提出了一种创新的电化学传感器,用于间接检测地表水样品中的GLY。该传感器包含一种纳米杂化材料,该材料由多层石墨烯组成,用金纳米颗粒(AuNPs)装饰,通过一步电化学过程合成。为了确保便携性和现场测量,传感器是在丝网印刷电极上开发的,因其集成和小型化能力而被选择。所提出的传感器在地表水样品中表现出显著的GLY检测灵敏度和选择性,在缓冲液和地表水基质中的检测限(LOD)均为0.03ppb。此外,它还显示出0.15μa ppb-1的非常高的灵敏度。这种电化学传感器为准确监测GLY提供了一种很有前途的方法,解决了对环境样品中可靠农药检测的迫切需求。当在其他农药如磷、毒死蜱和草膦铵存在的情况下进行分析时,所提出的传感器显示出对GLY的高选择性。GLY从加标地表水样品中的回收率在93.8%至98.9%之间。该研究的更广泛意义延伸到环境化学解决农药污染、水质评估和环境污染物可持续管理的革命性方法。通过突破检测能力的界限并提供实用的解决方案,这项研究有助于提高对保护和保护我们的环境至关重要的知识和实践。
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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Hybrid nanomaterial-based indirect electrochemical sensing of glyphosate in surface water: a promising approach for environmental monitoring†

Glyphosate (GLY), a widely utilized pesticide, poses a significant threat to human health even at minute concentrations. In this study, we propose an innovative electrochemical sensor for the indirect detection of GLY in surface water samples. The sensor incorporates a nanohybrid material composed of multi-layer graphene decorated with gold nanoparticles (AuNPs), synthesized in a single-step electrochemical process. To ensure portability and on-site measurements, the sensor is developed on a screen-printed electrode, chosen for its integration and miniaturization capabilities. The proposed sensor demonstrates remarkable sensitivity and selectivity for GLY detection in surface water samples, with an exceptional limit of detection (LOD) of 0.03 parts per billion (ppb) in both buffer and surface water matrices. Moreover, it exhibits a remarkably high sensitivity of 0.15 μA ppb−1. This electrochemical sensor offers a promising approach for accurate GLY monitoring, addressing the urgent need for reliable pesticide detection in environmental samples. The proposed sensor showed high selectivity towards GLY, when analysed in the presence of other pesticides such as phosmet, chlorpyrifos and glufosinate-ammonium. The recovery percentages of GLY from spiked surface water samples were between 93.8 and 98.9%. The study's broader implications extend to revolutionizing the way environmental chemistry addresses pesticide contamination, water quality assessment, and sustainable management of environmental pollutants. By pushing the boundaries of detection capabilities and offering practical solutions, this research contributes to the advancement of knowledge and practices that are essential for preserving and protecting our environment.

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来源期刊
Environmental Science: Processes & Impacts
Environmental Science: Processes & Impacts CHEMISTRY, ANALYTICAL-ENVIRONMENTAL SCIENCES
CiteScore
9.50
自引率
3.60%
发文量
202
审稿时长
1 months
期刊介绍: Environmental Science: Processes & Impacts publishes high quality papers in all areas of the environmental chemical sciences, including chemistry of the air, water, soil and sediment. We welcome studies on the environmental fate and effects of anthropogenic and naturally occurring contaminants, both chemical and microbiological, as well as related natural element cycling processes.
期刊最新文献
Correction: Exploring the variability of PFAS in urban sewage: a comparison of emissions in commercial versus municipal urban areas. Validation of a laboratory spray generation system and its use in a comparative study of hexamethylene diisocyanate (HDI) evaluation methods. Fluorinated aromatic PBCTF and 6:2 diPAP in bridge and traffic paints. Sorption of metal ions onto PET-derived microplastic fibres. Reduction of hexavalent chromium by compost-derived dissolved organic matter.
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