Determinação do nitrato em solos pelo método do ácido cromotrópico

Authors

  • V.C. de Bittencourt USP; E.S.A. Luiz de Queiroz
  • R.A. Catani USP; E.S.A. Luiz de Queiroz
  • A.M. Cangiani USP; E.S.A. Luiz de Queiroz

DOI:

https://doi.org/10.1590/S0071-12761968000100008

Abstract

A spectrophotometric method, based on the color with chromotropic acid is described for the determination of nitrates in soils extracts. The absorption spectra of the chromotropic acid, that of the nitrate-chromotropic acid compound, elimination of chloride ion interference, the influence of several factors like temperature, the time for the development of the color, etc, were studied.

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Published

1967-12-31

Issue

Vol. 25 (1968)

Section

naodefinida

How to Cite

Bittencourt, V. de, Catani, R., & Cangiani, A. (1967). Determinação do nitrato em solos pelo método do ácido cromotrópico . Anais Da Escola Superior De Agricultura Luiz De Queiroz, 25, 69-84. https://doi.org/10.1590/S0071-12761968000100008