Phosphorbestimmung in organischen Stoffen nach Aufschlüssen mit Natriumperoxid oder komprimiertem Sauerstoff

Fusion of organic phosphorous substances with sodium peroxide in the Parr bomb or with compressed oxygen in a calorimeter apparatus may be followed by chelatometrio phosphate determination via the precipitation of ammonium zinc phosphate. The experiments were carried out with triphenyl phosphine, tributyl phosphate and adenosine-3-monophosphoric acid. Ferrophosphorus also was fused with compressed oxygen. It was demonstrated that in this case, too, chelatometric phosphate determination is readily possible if the iron content of the solution produced by combustion is masked. The results were statistically evaluated.