Accession Number : AD0431613


Title :   THE SPECTROPHOTOMETRIC DETERMINATION OF AMMONIA AND LABILE AMINO COMPOUNDS IN FRESH AND SEAWATER BY OXIDATION TO NITRITE,


Corporate Author : WASHINGTON UNIV SEATTLE


Personal Author(s) : Richards,Francis A ; Kletsch,Richard A


Report Date : Jan 1964


Pagination or Media Count : 22


Abstract : A new method has been developed for the determination of small concentrations of ammonia and labile amino compounds in distilled, fresh, and seawater. It employs the oxidation of these compounds to nitrite by sodium hypochlorite in strongly basic solution. The excess sodium hypochlorite is reduced with sodium arsenite solution, and the nitrite is then determined by a calorimetric method. Bromide and iodide ions catalyze the oxidation. The precipitation of calcium and magnesium hydroxide from seawater samples by the base does not interfere with the determination. (Author)


Descriptors :   *AMINO ACIDS , DISTILLATION , SEA WATER , DETERMINATION , AMMONIA , OXIDATION , NITRITES , BASES(CHEMISTRY) , BROMIDES , CATALYSTS , IODIDES


Distribution Statement : APPROVED FOR PUBLIC RELEASE