Data/hora: 07/06/2024 15:17:41

Biblioteca(s): | Embrapa Pecuária Sudeste.
Data corrente: | 13/05/2003
Data da última atualização: | 20/06/2022
Autoria: | SOUZA, G. B. de; CARRILHO, E. N. V. M.; OLIVEIRA, C. V.; NOGUEIRA, A. R. de A.; NÓBREGA, J. A.
Afiliação: | GILBERTO BATISTA DE SOUZA, CPPSE; ELMA NEIDE V. M. CARRILHO, UFSCAR; CAMILA V. OLIVEIRA, UFSCAR; ANA RITA DE ARAUJO NOGUEIRA, CPPSE; JOAQUIM A. NÓBREGA, UFSCAR.
Título: | Oxygen bomb combustion of biological samples for inductively coupled plasma optical emission spectrometry.
Ano de publicação: | 2002
Fonte/Imprenta: | Spectrochimica Acta Part B, v.57, n.12, p.2195-2201, 2002.
DOI: | https://doi.org/10.1016/S0584-8547(02)00180-5
Idioma: | Inglês
Conteúdo: | A rapid sample preparation method is proposed for decomposition of milk powder, corn bran, bovine and fish tissues, containing certified contents of the analytes. The procedure involves sample combustion in a commercial stainless steel oxygen bomb operating at 25 bar. Most of the samples were decomposed within 5 min. Diluted nitric acid or water-soluble tertiary amines 10% v/v were used as absorption solutions. Calcium, Cu, K, Mg, Na, P, S and Zn were recovered with the bomb washings and determined by inductively coupled plasma optical emission spectrometry (ICP-OES). Ethanol mixed with paraffin was used as a combustion aid to allow complete combustion. A cooling step prior releasing of the bomb valve was employed to increase the efficiency of sample combustion. Iodine was also determined in milk samples spiked with potassium iodide to evaluate the volatilization and collection of iodine in amine CFA-C medium and the feasibility of its determination by ICP-OES with axial view configuration. Most of the element recoveries in the samples were between 91 and 105% and the certified and found contents exhibited a fair agreement at a 95% confidence level.
Palavras-Chave: | Biological samples; Elemental analysis; Inductively coupled plasma optical emission spectrometry; Oxygen bomb combustion; Sample preparation.
Categoria do assunto: | W Química e Física
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/87636/1/PROCI-2002.00182.pdf
Registro original: | Embrapa Pecuária Sudeste (CPPSE)
Exemplares: | CPPSE - (14447-1) - UPC - AP - DD - PROCI-2002.00182 - SOU - 2002.00182 - DIS