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
收藏
页码：7303 / 7307
页数：5
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