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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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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]
Total Authors: 7
[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
Total Affiliations: 4
Document type: Journal article
Source: Analytical Chemistry; v. 88, n. 10, p. 5145-5151, MAY 17 2016.
Web of Science Citations: 27

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. (AU)

FAPESP's process: 11/19903-5 - Development of electroanalytical methods for detection/discrimination of drugs of abuse, its adulterants and explosives in forensic samples
Grantee:William Reis de Araujo
Support type: Scholarships in Brazil - Doctorate (Direct)