Multicommuted flow systems for determination of free glycerol, manganese and total organic carbon in different sample matrices

• Grant number: 08/01045-0
• Support type: Scholarships in Brazil - Doctorate
• Effective date (Start): May 01, 2008
• Effective date (End): September 30, 2011
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Analytical Chemistry
• Principal Investigator: Fábio Rodrigo Piovezani Rocha
• Grantee: Sidnei Gonçalves da Silva
• Home Institution: Instituto de Química (IQ). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

The present project is focused on the development of analytical procedures exploiting flow systems with multicommutation to solve problems of environmental and technological interest: manganese determination in saline solutions, free glycerol in bio-diesel and total organic carbon in waters and effluents. Independently controlled commuting devices will be exploited to implement the diverse steps required in the analytical procedures. Spectrophotometric detection, including the use of a long optical path flow cell, will be explored to increase sensitivity. In addition, the development of the analytical procedure will emphasize the replacement of toxic reagents. Minimization of reagent consumption and waste generation will be achieved by means of automation.

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)

SILVA, SIDNEI G.; MORALES-RUBIO, ANGEL; DE LA GUARDIA, MIGUEL; ROCHA, FABIO R. P. Sequential spectrofluorimetric determination of free and total glycerol in biodiesel in a multicommuted flow system. ANALYTICAL AND BIOANALYTICAL CHEMISTRY, v. 401, n. 1, p. 365-371, JUL 2011. Web of Science Citations: 17.

SILVA, SIDNEI G.; NOBREGA, JOAQUIM A.; ROCHA, FABIO R. P. Exploiting Mn(III)/EDTA complex in a flow system with solenoid micro-pumps coupled to long pathlength spectrophotometry for fast manganese determination. Microchemical Journal, v. 98, n. 1, p. 109-114, MAY 2011. Web of Science Citations: 16.

SILVA, SIDNEI G.; ROCHA, FABIO R. P. A flow injection procedure based on solenoid micro-pumps for spectrophotometric determination of free glycerol in biodiesel. Talanta, v. 83, n. 2, p. 559-564, DEC 15 2010. Web of Science Citations: 20.