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The phenol‐hypochlorite‐ammonium reaction of Berthelot can be utilized in manual procedures for the analysis of NH4‐N in a variety of soils applications, including total N measurement in soils, particle size separates and soluble organic matter fractions, and in measuring NH4‐N in soil extracts. A simple, convenient, and versatile procedure is described.
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HINDS et al. (1980) studied this question.
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