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自动分析仪次溴酸钠氧化法测定海水中氨氮的研究
刁焕祥1
中国科学院海洋研究所
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A STUDY OF THE DETERMINATION OF AMMONIA IN SEA WATER WITH AUTOMATIC ANALYZER OXIDATION PROCESS OF SODIUM HYPOBROMITE
Abstract:
It has been difficult to determine the ammonia in sea water. The author has made improvement to the method of determining the ammonia with the oxidizing reaction of sodium hypobromite proposed by Gao Fengming et al. The method is suitable for Automatic Analyzer due to the finding of the optimal concentration of the oxidizer after adding the complexing agent for calcium and magnesium. This method is proved to be of high precision. The standard deviation is 0.2mg/m3 at a level of NH4-N 9.0mg/m3. The rate of recovery is over 97%. The preparation of reagent is simple and the stability of the reagent can be well maintained.
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