Determination of Ammoniacal Nitrogen in the Presence of Urea with an Ammonia Electrode

Abstract

Abstract A recently introduced commercial electrode is shown to be suitable for the determination of ammoniacal nitrogen in the presence of urea. The results compare favorably with those of the reduced pressure distillation method. Standard deviations for the electrode method and the reduced pressure distillation method for ammoniacal nitrogen in urea ammonium phosphate are 0.12 and 0.09%, respectively.