Application of Spectrophotometry in Production of Diammonium Phosphate Containing Polymerized Phosphorus
The determination of the polymerization rate of diammonium phosphate containing polymerized phosphorus by ion chromatography or ion exchange resin method has the problems of expensive detection equipment or long detection time.The method in the national standard"Determination of monoammonium phosphate and diammonium phosphate—Part 2:Phosphorus content"(GB/T 10209.2-2010)is used to determine the available phosphorus content in diammonium phosphate containing polymerized phosphorus,and the orthophosphate content is determined by spectrophotometry.Then the polymerization rate is calculated and the determination results can be obtained in about 3.5 hours.The results of laboratory tests and application in actual production show that using spectrophotometry to determine the polymerization rate of diammonium phosphate containing polymerized phosphorus can meet the requirements of production control.
diammonium phosphate containing polymerized phosphorusammonium polyphosphatepolymerization rateanalysis and determinationapplication
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