Data/hora: 05/06/2024 00:50:37

Biblioteca(s): | Embrapa Pecuária Sudeste.
Data corrente: | 11/07/2014
Data da última atualização: | 20/03/2023
Autoria: | CRISPINO, C. C.; LEMOS, S. G.; KANOGAWA, M. Y.; NOGUEIRA, A. R. de A.
Afiliação: | CARLA CRIPA CRISPINO, CNTRO DE ENERGIA NUCLEAR/PIRACICABA; SHERLAN GUIMARÃES LEMOS, UNIVERSIDADE FEDERAL DA PARAÍBA, JOÃO PESSOA; MARCOS YASSUO KAMOGAWA, ESALQ/PIRACICABA; ANA RITA DE ARAUJO NOGUEIRA, CPPSE.
Título: | Simultaneous determination of arsenic, antimony and selenium in agronomic samples by hydride generation and optical emission spectrometry.
Ano de publicação: | 2013
Fonte/Imprenta: | Brazilian Journal of Analitical Chemistry, v. 10, p. 460-467, 2013.
Idioma: | Inglês
Conteúdo: | A continuous-fl ow hydride generation system was developed and used with inductively coupled plasma optical emission spectrometry (ICP OES) for simultaneous determination of As, Sb and Se in agronomic samples. A factorial design was applied in order to establish the best chemical and instrumental conditions. The factors chosen for evaluation were: reagent concentration, plasma power, carrier gas fl ow rate, and the viewing height of the plasma. The LODs of the method were 0.124, 0.168, and 0.141 ?g L-1 for As, Sb, and Se, respectively. The RSD (relative standard derivation) was lower than 1.8%, and the sampling throughput was 40 samples h-1 . To check the method accuracy, eight different kinds of agronomic samples - for- age, corn silage, mineral salt, and bovine-derived samples (blood, viscera, carcass, meat, and semen) - were spiked with different analyte concentrations (at the ?g L-1 level). Recoveries ranged from 90 to 102%.
Palavras-Chave: | Agronomic sample; Factorial design; Hydride generation; Inductively coupled; Spectrometry.
Categoria do assunto: | W Química e Física
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/104956/1/PROCI-2014.00034.pdf
Registro original: | Embrapa Pecuária Sudeste (CPPSE)
Exemplares: | CPPSE - (22536-1) - UPC - AP - DD - PROCI-2014.00036 - CRI - 2014.00036 - DIS