The method consists in precipitating, after hydrolysis if necessary, of orthophosphate ions in the form of quinoline phosphomolybdate, in an acid medium and in the presence of acetone, at approximately 75 °C, followed by filtrating, washing drying and weighing of the precipitate obtained.
Document identifier
ISO 6598:1985
Title
Fertilizers - Determination of phosphorus content - Quinoline phosphomolybdate gravimetric method
ISO Category
TC 134/SC 4: Chemical analysis - STANDBY
Publication date
1985-09-01
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