Reusable 3D silver superposed silica SERS substrate based on the Griess reaction for the ratiometric detection of nitrite

被引：12

作者：

Cai, Rongyuan ^{[1
]}

Lu, Dechan ^{[1
,2
]}

She, Qiutian ^{[1
]}

You, Ruiyun ^{[1
]}

Feng, Shangyuan ^{[2
]}

Lin, Xueliang ^{[2
]}

Lu, Yudong ^{[1
]}

机构：

[1] Fujian Normal Univ, Fujian Prov Higher Educ Inst, Coll Chem & Mat Sci,Fujian Prov Key Lab Adv Orien, Engn Res Ctr Ind Biocatalysis,Fujian Key Lab Poly, Fuzhou 350007, Fujian, Peoples R China

[2] Fujian Normal Univ, Fujian Prov Key Lab Photon Technol, Minist Educ, Key Lab Optoelect Sci & Technol Med, Fuzhou 350117, Fujian, Peoples R China

来源：

ANALYTICAL AND BIOANALYTICAL CHEMISTRY | 2021年 / 413卷 / 19期

基金：

中国国家自然科学基金;

关键词：

SERS; Nitrite; Griess reaction; Ratiometric; Detection; Reusable; ENHANCED RAMAN-SPECTROSCOPY; NANOPARTICLES; SURFACE; LIQUID; RECOGNITION; PERFORMANCE; ELECTRODE; NITRATE; SYSTEM; PROBE;

D O I：

10.1007/s00216-021-03429-x

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

When nitrite is ingested and absorbed by the body, it can be converted into highly toxic nitrosamines (carcinogens, teratogens, and mutagens), posing health risks to the general population. Therefore, it calls for establishing a method for determination of nitrite. In this paper, the glass-SiO2-Ag surface-enhanced Raman scattering (SERS) substrate with a large number of "hot spots" were prepared by two kinds of silane coupling agents. The SERS substrate had high sensitivity and repeatability. Silicon dioxide supported the silver nanoparticles (Ag NPs), which increased surface roughness of the substrate, generated a great quantity of hot spots and enhanced the SERS signal. In the SERS spectrum, the intensity ratio of the two characteristic peaks (1287 cm(-1) and 1076 cm(-1)) had a good linear correlation with the logarithm of the concentration of nitrite, R-2 = 0.9652. The recoveries of 50 mu M and 100 mu M nitrite in three kinds of foods, three kinds of cosmetics and tap water were 90.9-105.3%.

引用

页码：4751 / 4761

页数：11

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