MAGNETIC NANOPARTICULES MODIFIED WITH TYSOL AND CARBOXILATES EMPLOYED IN THE DETERMINATION OF DYES IN HAIR

• Grant number: 13/21542-6
• Support Opportunities: Scholarships in Brazil - Doctorate
• Effective date (Start): January 01, 2014
• Effective date (End): June 30, 2017
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Analytical Chemistry
• Principal Investigator: Maria Valnice Boldrin
• Grantee: Gláucia Tinoco Corrêa
• Host Institution: Instituto de Química (IQ). Universidade Estadual Paulista (UNESP). Campus de Araraquara. Araraquara , SP, Brazil
• Associated research grant: 08/10449-7 - Assessment of occurrence, toxicity/genotoxicity and degradation processes of dyes in effluents and surface water, AP.TEM

Abstract

Analysisof contaminators in hair has greatly attracted attention as a circumstancial proof in forensic chemistry or control of dopant agents in athlete tests. Nevertheless, several controversies have been raised about hair utilization as a matrix that for its turn depends on the characteristics of hair, lipophilicity, permeability and presence of exogenous substances, such as dyes. The great limitation of analysis of wastes from dyes in hair is the low limit of detection of techniques used in the identification and quantification of these dyestuffsand by-products from extractions. The present research proposition has as an objective the synthesis and development of electrochemical sensors based in magnetic nanoparticules modified with tosyl and carboxylic groups, by using voltametric techniques in order to develop alternative, versatile, fast and economic electroanalytical methods, for quantifying hair dyes: Basic Red 51, Basic Blue 99 and Basic Brown 16 in extracts from a hair strand. The methods proposed will be compared with analytical methodologies described in the literature by using the LC-MS-MS technique.

Scientific publications

(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)

CORREA, GLAUCIA TINOCO; TANAKA, AURO ATSUCHI; ISABEL PIVIDORI, MARIA; BOLDRIN ZANONI, MARIA VALNICE. Use of a composite electrode modified with magnetic particles for electroanalysis of azo dye removed from dyed hair strands. Journal of Electroanalytical Chemistry, v. 782, p. 26-31, DEC 1 2016. (08/10449-7, 13/21542-6)

CORREA, GLAUCIA TINOCO; TANAKA, AURO ATSUCHI; ISABEL PIVIDORI, MARIA; BOLDRIN ZANONI, MARIA VALNICE. Use of a composite electrode modified with magnetic particles for electroanalysis of azo dye removed from dyed hair strands. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, v. 782, p. 6-pg., 2016-12-01. (08/10449-7, 13/21542-6)

CORREA, GLAUCIA TINOCO; DE SOUZA, JOAO CARLOS; SILVA, JOAO PEDRO; PIVIDORI, MARIA ISABEL; BOLDRIN ZANONI, MARIA VALNICE. Determination of temporary dye Basic Red 51 in commercial hair dye, river water and wastewater from hairdressing salon using graphite-epoxy composite electrode modified with magnetic nanoparticles. Microchemical Journal, v. 159, DEC 2020. (13/21542-6, 15/12998-1, 14/50945-4)