The fluorescence quenching of rhodamine 6G as an alternative sensing strategy for the quantification of silver and gold nanoparticles

被引：4

作者：

Molina Torres, Maria Andrea ^{[1
,2
]}

Viviana Veglia, Alicia ^{[1
,2
]}

Lorena Pacioni, Natalia ^{[1
,2
]}

机构：

[1] Univ Nacl Cordoba, Fac Ciencias Quim, Dept Quim Organ, Haya de la Torre & Medina Allende S-N,X5000HUA, Cordoba, Argentina

[2] Consejo Nacl Invest Cient & Tecn, INFIQC, Cordoba, Argentina

来源：

MICROCHEMICAL JOURNAL | 2021年 / 160卷

关键词：

Gold nanoparticles; Silver nanoparticles; Rhodamine; 6G; Fluorescence quenching; Surface river water; Tap water; FUNCTIONALIZED CARBON DOTS; WATER SAMPLES; EXTRACTION; GUIDELINES; SENSORS; DESIGN;

D O I：

10.1016/j.microc.2020.105645

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A method for the quantification of 22-26 nm gold (AuNP) and 10-20 nm silver nanoparticles (AgNP) was developed using the fluorescence quenching of rhodamine-6G. This fluorescent probe detected the different metal nanoparticles (MNP) at the pmol L-1 level (3.6 to 15.6 pmol L-1) depending on the type of nanoparticle) in phosphate buffer solutions at pH 6.94. The method was validated at the 95% confidence level using recovery tests to spiked drinking and surface river water (before and after industries). For AuNP@citrate26 and AgNP@SDDC12, the overall average recoveries ((R) over bar) were 90% (RSD: 11%) and 82% (RSD: 10%) in drinking water, respectively. Whereas, in surface river water before and after industries, (R) over bar were 88% (RSD: 17%) and 93% (RSD: 11%) for AuNP@citrate26, correspondingly; and 94% (RSD: 6%) and 83% (12%) for AgNP@SDDC12, respectively. The proposed strategy represents an accurate, rapid, simple, and cost-effective methodology to analyze MNP in aqueous systems.

引用

页数：8

共 54 条

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