Evaluation of acid digestion techniques to estimate chromium contents in cattle feces

Detalhes bibliográficos
Autor(a) principal: Rocha, Gabriel Cipriano
Data de Publicação: 2015
Outros Autores: Palma, Malber Nathan Nobre, Detmann, Edenio, Valadares Filho, Sebastião de Campos
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/19625
Resumo: The objective of this work was to evaluate the accuracy of digestion techniques using nitric and perchloric acid at the ratios of 2:1, 3:1, and 4:1 v v‑1, in one‑ or two‑step digestion, to estimate chromium contents in cattle feces, using sodium molybdate as a catalyst. Fecal standards containing known chromium contents (0, 2, 4, 6, 8, and 10 g kg‑1) were produced from feces of five animals. The chromium content in cattle feces is accurately estimated using digestion techniques based on nitric and perchloric acids, at a 3:1 v v‑1 ratio, in one‑step digestion, with sodium molybdate as a catalyst.