Spectrophotometric Determination of Ammonia in Inorganic Compounds
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چکیده
Nitrogen constitutes 78.09% by volume of dry unpolluted air, but it is a minor element with respect to its abundance in the earthj:"crust. Atmospheric nitrogen forms an important raw material for the economical synthesis of bulk chemicals of industrial importance, viz. ammonia, urea, nitrate, nitrite etc. Therefore, estimation of ammonia and its derivatives assumes a great importance for chemical industry. Traditionally..,ammonia has been estimated by direct titration with an acid. Kjeldahl method based on the conversion of nitrogen containing organic compounds to ammonium ion, is in use since 1883. The procedure is time proven for the determination of nitrogen in wide variety of chemical compounds. The various methods for the analysis of ammonia include titrimetric, spectrophotometric and chromatographic technique.
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