Development of vaporization and atomization systems using a infrared radiation and tungsten coil

• Grant number: 11/13288-7
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Start date: November 01, 2011
• End date: January 31, 2015
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Analytical Chemistry
• Principal Investigator: Joaquim de Araújo Nóbrega
• Grantee: Sidnei Gonçalves da Silva
• Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
• Associated scholarship(s): 12/13647-0 - Development of procedures for elemental analysis by fluorescence atomic spectroscopy using tungsten coil, BE.EP.PD

Abstract

The project here proposed deals with the development of vaporization and atomization systems using a tungsten coil resistively heated and high power tungsten lamps for generating infrared radiation. These systems will be applied for elemental analysis of waters and plant materials. Heating programs will be established for each device by controlling the applied current and the main concomitants will be removed by volatilization. The use of both devices as vaporizer and atomizer systems will generate low cost instruments when compared to the ones using either graphite furnaces or argon plasmas. The simultaneous determination of metals will be studied by atomic emission spectrometry and atomic fluorescence spectrometry using a multichannel array detector based on a charge-coupled device. (AU)

Scientific publications

(4)

(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)

DANCSAK, STACIA E.; SILVA, SIDNEI G.; NOBREGA, JOAQUIM A.; JONES, BRADLEY T.; DONATI, GEORGE L.. Direct determination of sodium, potassium, chromium and vanadium in biodiesel fuel by tungsten coil atomic emission spectrometry. Analytica Chimica Acta, v. 806, p. 85-90, JAN 2 2014. (11/13288-7, 12/13647-0)

SILVA, SIDNEI G.; NOBREGA, JOAQUIM A.; JONES, BRADLEY T.; DONATI, GEORGE L.. Magnesium nitrate as a chemical modifier to improve sensitivity in manganese determination in plant materials by tungsten coil atomic emission spectrometry. Journal of Analytical Atomic Spectrometry, v. 29, n. 8, p. 1499-1503, AUG 2014. (11/13288-7, 12/13647-0)

VIDAL, LORENA; SILVA, SIDNEI G.; CANALS, ANTONIO; NOBREGA, JOAQUIM A.. Tungsten coil atomic emission spectrometry combined with dispersive liquid-liquid microextraction: A synergistic association for chromium determination in water samples. Talanta, v. 148, p. 602-608, FEB 1 2016. (11/13288-7)

SILVA, SIDNEI G.; DONATI, GEORGE L.; SANTOS, LUANA N.; JONES, BRADLEY T.; NOBREGA, JOAQUIM A.. Cobalt as chemical modifier to improve chromium sensitivity and minimize matrix effects in tungsten coil atomic emission spectrometry. Analytica Chimica Acta, v. 780, p. 7-12, MAY 30 2013. (11/13288-7)