Label-free gold nanoparticle-based sensing of cysteine: New peculiarities and prospects

被引：27

作者：

Apyari, Vladimir V. ^{[1
]}

Arkhipova, Viktoria V. ^{[1
]}

Isachenko, Andrei I. ^{[1
]}

Volkov, Pavel A. ^{[2
]}

Dmitrienko, Stanislava G. ^{[1
]}

Torocheshnikova, Irina I. ^{[1
]}

机构：

[1] Lomonosov Moscow State Univ, Dept Chem, Leninskie Gory 1-3, Moscow 119991, Russia

[2] Natl Res Ctr Kurchatov Inst, Sci Res Inst Chem Reagents & Special Pur Chem, Bogorodsky Val St 3, Moscow 107076, Russia

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2018年 / 260卷

基金：

俄罗斯科学基金会;

关键词：

Label-free gold nanoparticles; Cysteine; Label-free detection; Nanoparticle aggregation; Spectrophotometry; Diffuse reflectance spectroscopy; PERFORMANCE LIQUID-CHROMATOGRAPHY; PRO MINI-SPECTROPHOTOMETER; LIGHT-SCATTERING TECHNIQUE; SPECTROMETRIC DETERMINATION; HOMOCYSTEINE; SILVER; GLUTATHIONE; AGGREGATION; PLASMA; ASSAY;

D O I：

10.1016/j.snb.2018.01.118

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In this article, some new peculiarities and prospects of cysteine determination using aggregation of label-free gold nanoparticles (AuNPs) are described. Features of the aggregation both in solution and on polyurethane surface are compared. Effects of ethylenediaminetetraacetate (EDTA) and cysteamine on the aggregation of AuNPs, which increase sensitivity, are considered. In case of EDTA, it was simultaneously possible to eliminate interferences from cations of metals. It is shown that attaching AuNPs onto polyurethane foam surface changes their sensitivity and selectivity, which can be used for the determination of cysteine. Based on found peculiarities, new methods for the determination of cysteine in a range 0.06-0.5 mu gmL(-1) (LOD= 0.04 mu g mL(-1)) by spectrophotometry, and 0.02-0.15 mu gmL(-1) (LOD = 0.01 mu g mL(-1)) by diffuse reflectance spectroscopy were developed. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：953 / 961

页数：9

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