Gold nanoparticle-based cascade reaction-triggered fluorogenicity for highly selective nitrite ion detection in forensic samples

被引：16

作者：

Chaiendoo, Kanokwan ^{[1
,2
]}

Ngamdee, Kessarin ^{[1
,2
]}

Limbut, Warakorn ^{[3
,4
,5
]}

Saiyasombat, Chatree ^{[7
]}

Busayaporn, Wutthikrai ^{[7
]}

Ittisanronnachai, Somlak ^{[8
]}

Promarak, Vinich ^{[9
]}

Promsuwan, Kiattisak ^{[4
,5
,6
]}

Thavarungkul, Panote ^{[4
,5
,6
]}

Kanatharana, Proespichaya ^{[4
,5
,6
]}

Ngeontae, Wittaya ^{[1
,2
,10
,11
]}

机构：

[1] Khon Kaen Univ, Fac Sci, Dept Chem, Khon Kaen 40002, Thailand

[2] Khon Kaen Univ, Ctr Excellence Innovat Chem, Dept Chem, Khon Kaen 40002, Thailand

[3] Prince Songkla Univ, Fac Sci, Div Hlth & Appl Sci, Hat Yai 90112, Songkhla, Thailand

[4] Prince Songkla Univ, Ctr Excellence Trace Anal & Biosensor, Hat Yai 90112, Songkhla, Thailand

[5] Prince Songkla Univ, Fac Sci, Ctr Excellence Innovat Chem, Hat Yai 90112, Songkhla, Thailand

[6] Prince Songkla Univ, Fac Sci, Div Phys Sci, Hat Yai 90112, Songkhla, Thailand

[7] Synchrotron Light Res Inst, Nakhon Ratchasima 30000, Thailand

[8] Vidyasirimedhi Inst Sci & Technol, Frontier Res Ctr FRC, Wang Chan 21210, Rayong, Thailand

[9] Vidyasirimedhi Inst Sci & Technol, Sch Mol Sci & Engn, Frontier Res Ctr FRC, Wang Chan 21210, Rayong, Thailand

[10] Khon Kaen Univ, Res Ctr Environm & Hazardous Subst Management, Khon Kaen 40002, Thailand

[11] Ctr Excellence Environm & Hazardous Waste Managem, Bangkok 10330, Thailand

来源：

MICROCHEMICAL JOURNAL | 2021年 / 168卷

关键词：

Chemical sensors; Fluorescent sensors; Gold nanoparticles; Peroxidase-like activity; Oxidative etching; OPD; COLORIMETRIC DETECTION; HIGH-SENSITIVITY; VISUAL DETECTION; NANORODS; OXIDASE; AU; NITRATE; H2O2; CHEMILUMINESCENCE; FLUORESCENT;

D O I：

10.1016/j.microc.2021.106470

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Nitrite ions are important markers in gunshot residue (GSR) analysis. A highly sensitive and selective sensor that precisely identifies nitrite ions still needs to be developed. This work therefore proposed a new approach for nitrite ion detection based on the oxidative etching of cetyltrimethyl ammonium bromide-stabilized gold nanoparticles (CTAB@AuNPs) by nitrite ions to generate gold ions (Au3+), which can catalyze the decomposition of hydrogen peroxide and further react with fluorogenic substrates (o-phenylenediamine: OPD) to yield efficient fluorescent species (2,3-diaminophenazine; DAP). The concentration of nitrite ions can be indirectly determined by tracing the fluorescence intensity of the generated DAP. The degrees of fluorescence enhancement increased linearly with increasing nitrite ion concentration in the concentration range of 0-60 & micro;M, with a minimum limit of detection (LOD) of 0.07 & micro;M. More importantly, only nitrite ions can cause this fluorescence enhancement, while other tested anions showed no significant effect. Compared with the reference method, the proposed sensor can be applied for the detection of nitrite ions in GSR with satisfactory results.

引用

页数：8

共 52 条

[21] Nitrite amperometric sensor for gunshot residue screening [J].