Dispersive liquid-liquid microextraction using multi-syringe and spectrophotometric detection for determination of lead in plants and water

• Grant number: 14/22520-9
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate
• Start date: March 01, 2015
• End date: May 31, 2015
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Analytical Chemistry
• Principal Investigator: Boaventura Freire dos Reis
• Grantee: Felisberto Gonçalves Santos Junior
• Supervisor: Víctor Cerdà
• Host Institution: Centro de Energia Nuclear na Agricultura (CENA). Universidade de São Paulo (USP). Piracicaba , SP, Brazil
• Institution abroad: Universitat de les Illes Balears (UIB), Spain
• Associated to the scholarship: 13/05728-2 - Development of fluid propelling device and flow analysis module with ability to implement the processes of sequential injection analysis and multicommutation flow analysis, BP.DR

Abstract

In this project we intent to develop a flow analysis procedure using dispersive liquid-liquid microextraction (ST-DLLME) as a pre-concentration strategy for the determination of lead in plants and water. The procedure will be implemented employing a Multi-syringe Flow Injection Analysis (MSFIA) setup for fluids handling. In this ST-DLLME methodology, a mixture of solvents is added to the aqueous sample forming an emulsion, once separated the emulsion in two phases, the organic phase is taken to perform the measurement with an appropriate detector. This extraction methodology does not requires a centrifugation step for phase separation, thus contributing for both reduction of organic solvent consumption and to speed up the sample analysis, which can be considered as an appreciable advantage. (AU)

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)

SANTOS, FELISBERTO GONCALVES; MAYA, FERNANDO; DOS REIS, BOAVENTURA FREIRE; GUIDETTI ZAGATTO, ELIAS AYRES; CERDA, VICTOR. Flow-based determination of lead exploiting in-syringe dispersive liquid-liquid micro-extraction in xylene and integrated spectrophotometric detection. Talanta, v. 247, p. 6-pg., 2022-09-01. (13/05728-2, 14/22520-9)