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

Authors

  • Gabriel Cipriano Rocha Universidade Federal de Viçosa, Departamento de Zootecnia
  • Malber Nathan Nobre Palma Universidade Federal de Viçosa, Departamento de Zootecnia
  • Edenio Detmann Universidade Federal de Viçosa, Departamento de Zootecnia
  • Sebastião de Campos Valadares Filho Universidade Federal de Viçosa, Departamento de Zootecnia

DOI:

https://doi.org/10.1590/S1678-3921.pab2015.v50.19625

Keywords:

chromic oxide, chromium recovery, markers

Abstract

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.

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Published

2015-01-28

How to Cite

Rocha, G. C., Palma, M. N. N., Detmann, E., & Valadares Filho, S. de C. (2015). Evaluation of acid digestion techniques to estimate chromium contents in cattle feces. Pesquisa Agropecuaria Brasileira, 50(1), 92–95. https://doi.org/10.1590/S1678-3921.pab2015.v50.19625

Issue

v.50, n.1, jan. 2015

Section

SCIENTIFIC NOTES