通过咔唑荧光猝灭定量水中的银和金纳米粒子：一种简单而经济的方法

Q1 Environmental Science

Environmental Nanotechnology, Monitoring and Management Pub Date : 2025-06-14 DOI:10.1016/j.enmm.2025.101084

Rodrigo Nicolás Núñez , Alicia Viviana Veglia , Natalia Lorena Pacioni

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引用次数: 0

摘要

以没食子酸、柠檬酸或对（2-羟基乙氧基）苯甲酸为配体，评价了咔唑和carbazole@2-hydroxypropyl-β-环糊精配合物在水中的荧光猝灭，作为对六种不同银和金纳米粒子的定量分析策略。游离卡唑对所分析的金属纳米颗粒更敏感，检测限在皮摩尔水平（例如，柠檬酸稳定的银纳米棒（AgNR）为0.106 pM，柠檬酸稳定的银纳米球（AgNPc）为34.5 pM），而环dextrin配合的卡唑（例如，AgNR为0.200 pM，对AgNPc不敏感）。在自来水和地表水中的回收率为90% ~ 112%，置信度为95%。所提出的方法是一个很好的替代更复杂的方法，准确定量在水系统中的银和金纳米颗粒。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Quantifying silver and gold nanoparticles in water via carbazole fluorescence quenching: A simple and economical approach

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Quantifying silver and gold nanoparticles in water via carbazole fluorescence quenching: A simple and economical approach

The fluorescence quenching of carbazole and carbazole@2-hydroxypropyl-β-cyclodextrin complex was evaluated in water as an analytical strategy for the quantification of six different silver and gold nanoparticles with either gallic acid, citrate, or p-(2-hydroxyethoxy) benzoic acid as ligands. The free carbazole is more sensitive to the analyzed metal nanoparticles with detection limits in the picomolar level (e.g., 0.106 pM for citrate-stabilized silver nanorods (AgNR) and 34.5 pM for citrate-stabilized silver nanospheres (AgNP_c)) compared to the cyclodextrin-complexed carbazole (e.g., 0.200 pM for AgNR to insensitive for AgNP_c). The recovery assays in spiked tap water and surface river water for all the analyzed nanoparticles were between 90 % and 112 % with 95 % confidence. The proposed method is an excellent alternative to more sophisticated methodologies for accurately quantifying silver and gold nanoparticles in aqueous systems.

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来源期刊

Environmental Nanotechnology, Monitoring and Management Environmental Science-Water Science and Technology

CiteScore

13.00

自引率

0.00%

发文量

132

审稿时长

48 days

期刊介绍： Environmental Nanotechnology, Monitoring and Management is a journal devoted to the publication of peer reviewed original research on environmental nanotechnologies, monitoring studies and management for water, soil , waste and human health samples. Critical review articles, short communications and scientific policy briefs are also welcome. The journal will include all environmental matrices except air. Nanomaterials were suggested as efficient cost-effective and environmental friendly alternative to existing treatment materials, from the standpoints of both resource conservation and environmental remediation. The journal aims to receive papers in the field of nanotechnology covering; Developments of new nanosorbents for: •Groundwater, drinking water and wastewater treatment •Remediation of contaminated sites •Assessment of novel nanotechnologies including sustainability and life cycle implications Monitoring and Management papers should cover the fields of: •Novel analytical methods applied to environmental and health samples •Fate and transport of pollutants in the environment •Case studies covering environmental monitoring and public health •Water and soil prevention and legislation •Industrial and hazardous waste- legislation, characterisation, management practices, minimization, treatment and disposal •Environmental management and remediation