Application of the Berthelot reaction to the determination of ammonium‐N in soil extracts and soil digests

Abstract

Abstract 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. Key words: ammonium‐N determinationsoil nitrogenBerthelot reaction