Simple and Sensitive Paper-Based Device Coupling Electrochemical Sample Pretreatment and Colorimetric Detection

被引：66

作者：

Silva, Thalita G. ^{[1
]}

de Araujo, William R. ^{[1
]}

Munoz, Rodrigo A. A. ^{[2
]}

Richter, Eduardo M. ^{[2
]}

Santana, Mario H. P. ^{[3
]}

Coltro, Wendell K. T. ^{[4
]}

Paixao, Thiago R. L. C. ^{[1
]}

机构：

[1] Univ Sao Paulo, Inst Quim, BR-05508000 Sao Paulo, SP, Brazil

[2] Univ Fed Uberlandia, Inst Quim, BR-38400902 Uberlandia, MG, Brazil

[3] Superintendencia Reg Dept Policia Fed MG, Unidade Tecn Cient, BR-38408680 Uberlandia, MG, Brazil

[4] Univ Fed Goias, Inst Quim, Campus Samambaia, BR-74690900 Goiania, Go, Brazil

来源：

ANALYTICAL CHEMISTRY | 2016年 / 88卷 / 10期

基金：

巴西圣保罗研究基金会;

关键词：

LOW-COST; MICROFLUIDIC DEVICES; COCAINE; FABRICATION; QUANTIFICATION; ACID;

D O I：

10.1021/acs.analchem.6b00072

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

We report the development of a simple, portable, low-cost, high-throughput-visual colorimetric paper-based analytical device for the detection of procaine in seized cocaine samples. The interference of most common cutting agents found in cocaine samples was verified, and a novel electrochemical approach was used for sample pretreatment in order to increase the selectivity. Under the optimized experimental conditions, a linear analytical curve was obtained for procaine concentrations ranging from 5 to 40 mu mol L-1 with a detection limit of 0.9 mu mol L-1. The accuracy of the proposed method was evaluated using seized cocaine samples and an addition and recovery protocol.

引用

页码：5145 / 5151

页数：7

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