Data/hora: 10/06/2024 13:49:55

Biblioteca(s): | Embrapa Pecuária Sudeste.
Data corrente: | 07/11/2006
Data da última atualização: | 08/03/2023
Autoria: | FERNANDES, K. G.; NOGUEIRA, A. R. de A.; GOMES NETO, J. A.; NÓBREGA, J. A.
Afiliação: | KELLY G. FERNANDES, UFSCar; ANA RITA DE ARAUJO NOGUEIRA, CPPSE; JOSÉ A. GOMES, UNESP; JOAQUIM A. NÓBREGA, UFSCar.
Título: | Determination of vanadium in human hair slurries by electrothermal atomic absorption spectrometry.
Ano de publicação: | 2007
Fonte/Imprenta: | Talanta, v. 71, n. 3, p. 1118-1123, 2007.
DOI: | 10.1016/j.talanta.2006.06.008
Idioma: | Inglês
Conteúdo: | This work describes an analytical procedure for vanadium determination in human hair slurries by electrothermal AAS using longitudinal heating (LHGA) and transversal heating (THGA) graphite fumace atomizers. The samples were powdered using cryogenic grinding and lhe hair slurries containing 0.2 g L-I were prepared in three different media for determination of vanadium: 0.14 moi L-I HNO3, 0.1 % (v/v) Triton X-100 c and 0.1 % (v/v) water soluble tertiary amines (CFA-C, pH 8). The limits of detection (LOD), limits of quantification (LOQ), and characteristic masses obtained were 0.28, 0.95 ILg L-I and 35 pg (LHGA) and 0;34, 1.131Lg L-I and 78 pg (THGA), respectively. The accuracy of the analytical results obtained by lhe proposed procedure in both equipments was confirmed by a paired t-test at lhe 95% contidence leveI and compared with a conventional procedure based on acid digestion.
Palavras-Chave: | Graphite furnance AAS; Human hair; LHGA; Slurry sampling; THGA.
Thesaurus Nal: | vanadium.
Categoria do assunto: | W Química e Física
Registro original: | Embrapa Pecuária Sudeste (CPPSE)
Exemplares: | CPPSE - (16423-1) - UPC - AP - DD - PROCI-2007.00002 - FER - 2007.00002 - DIS