This standard was last reviewed and confirmed in 2018. Therefore this version remains current.
Based on hydrolysis of a test portion by prolonged boiling in the presence of hydrochloric acid. Precipitation of the phosphate ions in the form of quinoline phosphomolybdate in the presence of acetone. Filtration by means of a filter crucible, washing, drying and weighing of the precipitate.
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|std 1 40|
|std 2 40||Paper|
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Stage: 90.20 (Under review)
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