| Grant number: |
11/19903-5
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| Support type: | Scholarships in Brazil - Doctorate (Direct) |
| Effective date (Start): |
February 01, 2012
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| Effective date (End): |
March 31, 2016
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| Field of knowledge: | Physical Sciences and Mathematics
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Chemistry
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Analytical Chemistry |
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| Principal Investigator: | Thiago Regis Longo Cesar da Paixão |
| Grantee: | William Reis de Araujo |
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| Home Institution: |
Instituto de Química (IQ). Universidade de São Paulo (USP). São Paulo , SP, Brazil
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| Associated scholarship(s): | 14/00788-0 - Development of electrochemical sensors for detection and discrimination of forensic samples,
BE.EP.DD
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Abstract
Electrochemical techniques have been received increasing attention in the forensic field and for monitoring different chemical species. Hence, this research project focused on developing analytical methods for the quantification/discrimination of abuse drugs in biological fluids, specifically in urine using chemically modified electrodes and techniques of paper chromatography with electrochemical detection. The process of discrimination is performed using voltammetric electronic tongues, that is, a set of non-specific voltammetric sensors with low selectivity but high sensitivity associated with unsupervised pattern recognition methods to process the information for the discrimination. The development of these devices can result in greater flexibility in the process of discrimination of the doping process. Nowadays, this control requires several preparation steps and requiring large time between the analysis sample and the solution of the case. Additionally, these techniques require well-trained and expensive equipment. For this reason, it is interesting to develop new rapid analytical methods, which provide accurate and analysis "in situ" of these biological matrices, such as urine. (AU)
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| News published in Agência FAPESP Newsletter about the scholarship: |
| Researchers develop paper sensors to detect explosives
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Scientific publications
(10)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
SILVA, THALITA G.;
DE ARAUJO, WILLIAM R.;
MUNOZ, RODRIGO A. A.;
RICHTER, EDUARDO M.;
SANTANA, MARIO H. P.;
COLTRO, WENDELL K. T.;
PAIXAO, THIAGO R. L. C.
Simple and Sensitive Paper-Based Device Coupling Electrochemical Sample Pretreatment and Colorimetric Detection.
Analytical Chemistry,
v. 88,
n. 10,
p. 5145-5151,
MAY 17 2016.
Web of Science Citations: 27.