ISO 6598:1985

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Fertilizers - Determination of phosphorus content - Quinoline phosphomolybdate gravimetric method

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ISO 6598:1985

Fertilizers - Determination of phosphorus content - Quinoline phosphomolybdate gravimetric method

PUBLISH DATE 1985
ISO 6598:1985

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.

This is followed by filtrating, washing, drying, and weighing of the precipitate obtained.

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