Understanding the process of microwave-assisted digestion combining diluted nitric acid and oxygen as auxiliary reagent

Microchemical Journal

Volumn 99, Issue 2, 2011, Pages 193-196

  Bizzi, Cezar A ^a,b   Flores, Erico M M ^a,b   Barin, Juliano S ^a   Garcia, Edivaldo E ^c   Nóbrega, Joaquim A ^d  

^a FEDERAL UNIVERSITY OF SANTA MARIA   (Brazil)

^b Instituto Nacional de Ciencia e Tecnologia de Bioanalitica   (Brazil)

^c STATE UNIVERSITY OF MARINGÁ   (Brazil)

^d FEDERAL UNIVERSITY OF SÃO CARLOS   (Brazil)

Author keywords

Digestion process; Diluted nitric acid; Microwave assisted digestion; Oxygen pressure; Residual carbon content

Indexed keywords

EID: 80955178400     PISSN: 0026265X     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.microc.2011.05.002     Document Type: Article

References (16)

1. Araujo G.C.L., Gonzalez M.H., Ferreira A.G., Nogueira A.R.A., Nóbrega J.A. Effect of acid concentration on closed-vessel microwave-assisted digestion of plant materials. Spectrochim. Acta Part B 2002, 57:2121-2132.
2. Matusiewicz H., Stanisz E. Evaluation of high pressure oxygen microwave-assisted wet decomposition for the determination of mercury by CVAAS utilizing UV-induced reduction. Microchem. J. 2010, 95:268-273.
3. Silva S.G., Oliveira P.V., Rocha F.R.P. A green analytical procedure for determination of copper and iron in plant materials after cloud point extraction. J. Braz. Chem. Soc. 2010, 21:234-239.
4. Castro J.T., Santos E.C., Santos W.P.C., Costa L.M., Nóbrega J.A., Korn M.G.A. A critical evaluation of digestion procedures for coffee samples using diluted nitric acid in closed vessels for inductively coupled plasma optical emission spectrometry. Talanta 2009, 78:1378-1382.
5. P.V. Oliveira, Personal Communication, 2011.
6. Trevizan L.C., Donati G.L., Nogueira A.R.A., Nobrega J.A. Microwave-assisted procedure for sample preparation: recent developments. Trends in Sample Preparation 2006, Nova Science Publishers, New York, 29-52p. M.A.Z. Arruda (Ed.).
7. Bizzi C.A., Flores E.M.M., Picoloto R.S., Barin J.S., Nóbrega J.A. Microwave-assisted digestion in closed vessels: effect of pressurization with oxygen on digestion process with diluted nitric acid. Anal. Methods 2010, 2:734-738.
8. Bizzi C.A., Barin J.S., Müller E.I., Schmidt L., Nóbrega J.A., Flores E.M.M. Evaluation of oxygen pressurized microwave-assisted digestion of botanical materials using diluted nitric acid. Talanta 2010, 83:1324-1328.
9. Krushevska A., Barnes R.M., Amarasiriwaradena C.J., Foner H., Martines L. Determination of the residual carbon content by inductively coupled plasma atomic emission spectrometry after decomposition of biological samples. J. Anal. At. Spectrom. 1992, 7:845-850.
10. Gouveia S.T., Silva F.V., Costa L.M., Nogueira A.R.A., Nóbrega J.A. Determination of residual carbon by inductively-coupled plasma optical emission spectrometry with axial and radial view configurations. Anal. Chim. Acta 2001, 445:269-275.
11. Spectro Ciros CCD Software version 01/March 2003 2003, Spectro Analytical Instruments GmbH & Co. KG, Kleve, Germany.
12. Flores E.M.M., Mesko M.F., Moraes D.P., Pereira J.S.F., Mello P.A., Barin J.S., Knapp G. Determination of halogens in coal after digestion using the microwave-induced combustion technique. Anal. Chem. 2008, 80:1865-1870.
13. Anton Paar GmbH Multiwave 3000®. Microwave Sample Preparation System 2003, Software version v1.27-Synt, Graz, Austria.
14. Anton Paar Application Note, Microwave-assisted UV-digestion of liquid samples, Graz, Austria.
15. Rocha F.R.P., Teixeira L.S.G., Nóbrega J.A. Green strategies in trace analysis: a glimpse of simple alternatives for sample pretreatment and analyte determination. Spectrosc. Lett. 2009, 42:418-429.
16. de la Guardia M. Green analytical chemistry. Trends Anal. Chem. 2010, 29:577.