A paper indicator for triple-modality sensing of nitrite based on colorimetric assay, Raman spectroscopy, and electron paramagnetic resonance spectroscopy

被引：8

作者：

Wang, Zhibin ^{[1
]}

Wang, Jingfang ^{[2
]}

Xiao, Zhiwei ^{[3
]}

Xia, Junfei ^{[1
]}

Zhang, Peipei ^{[1
]}

Liu, Tao ^{[3
]}

Guan, Jingjiao ^{[1
,4
]}

机构：

[1] Florida State Univ, Integrat NanoSci Inst, FAMU FSU Coll Engn, Dept Chem & Biomed Engn, Tallahassee, FL 32310 USA

[2] Florida State Univ, Dept Chem & Biochem, Tallahassee, FL 32306 USA

[3] Florida State Univ, FAMU FSU Coll Engn, Dept Ind & Mfg Engn, Tallahassee, FL 32310 USA

[4] Florida State Univ, Tallahassee, FL 32306 USA

来源：

ANALYST | 2013年 / 138卷 / 24期

基金：

美国国家科学基金会;

关键词：

NITRATE; NANOTUBES; OXIDE; PROBES; ACID;

D O I：

10.1039/c3an01604h

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Paper indicators based on colorimetric assays are widely used for nitrite detection, but their application to liquids with strong colours is restricted. We report a novel paper indicator that allows for sensing nitrite by colorimetric assay, Raman spectroscopy, and electron paramagnetic resonance spectroscopy with non-overlapping signal wavelength ranges through non-contact means. The paper indicator was prepared by impregnating poly(4-aminostyrene), 2-naphthol and single-walled carbon nanotubes in a regular filter paper. All three ingredients were essential to realize the triple-modality sensing. This method is simple and inexpensive, and promises to have wider applicability than the existing paper indicators.

引用

页码：7303 / 7307

页数：5

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