Data/hora: 12/06/2024 06:05:22

Biblioteca(s): | Embrapa Pecuária Sudeste.
Data corrente: | 04/10/2010
Data da última atualização: | 30/06/2023
Autoria: | PEREIRA, C. D.; GARCIA, E. E.; SILVA, F. V.; NOGUEIRA, A. R. de A.; NOBREGA, J. A.
Afiliação: | CATARINIE D. PEREIRA,, UFSCar/SÃO CARLOS, SP; EDIVALDO E. GARCIA, UNIV. ESTADUAL DE MARINGÁ,MARINGÁ,PR.; FERNANDO V. SILVA, NESTLÉ DO BRASIL/SÃO PAULO; ANA RITA DE ARAUJO NOGUEIRA, CPPSE; JOAQUIM A. NOBREGA, UFSCar/SÃO CARLOS, SP.
Título: | Behaviour of arsenic and selenium in an ICP-QMS with collision and reaction interface.
Ano de publicação: | 2010
Fonte/Imprenta: | Journal of Analytical Atomic Spectrometry,
Idioma: | Português
Conteúdo: | The performance of a collision reaction interface (CRI) for minimization of spectral interferences on analytical signals of 75As+ and 76Se+, 77Se+, 78Se+, 80Se+ and 82Se+ isotopes was evaluated by using H2 and He gases introduced through the sampler or skimmer cones of an inductively coupled plasma quadrupole mass spectrometer (ICP-QMS). Different gas flow rates were tested employing reference solutions prepared either in hydrochloric acid or in water soluble tertiary amines (CFA-C) media as carbon source. A hydrogen gas flow rate at 60 mL min1 introduced through skimmer cone was effective for minimizing polyatomic interferences on 75As+ and Se isotopes, except for 80Se+. The use of He introduced through sampler or skimmer cones had a minor effect on the minimization of interferences when compared to the use of H2 gas. Moreover, it was observed that the gas introduction through the sampler cone had no effect on interferences when using gas flow rates up to 80 mL min1 for both gases evaluated. Based on these results, it can be recommended to use H2 gas introduced through skimmer cone of the CRI for correcting polyatomic interferences on 75As+ and Se isotopes in matrixes containing up to 2% v v1 chloride.
Palavras-Chave: | ICP-QMS.
Thesaurus Nal: | arsenic; selenium.
Categoria do assunto: | W Química e Física
Registro original: | Embrapa Pecuária Sudeste (CPPSE)
Exemplares: | CPPSE - (19515-1) - UPC - AP - DD - PROCI-2010.00076 - PER - 2010.00076 - DIS