Determination of ortho-,pyro- and tripolyphosphate by the use of a small column of ion-exchange resin

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  • Determination of ortho- , pyro- and tripolyphosphate by the use of a small column of ion-exchange resin

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<jats:title>Abstract</jats:title> <jats:p>The authors presented the new rapid method for the determination of ortho-, pyro- and tripolyphosphate in the mixture by the use of a small column, 2.6 mm. in diameter and 60 mm. in height, of ion-exchange resin, Dowex 1–X4 (200∼400 mesh). The continuous-gradient elution method was applied and the paper micro-fraction collector was used. For example, by the use of 2 m potassium chloride of pH 4.5 as the stock solution, 100 μg. as phosphorus of each phosphate species can be separated by letting only 79 drops of the eluant flow. The quantitative data obtained by the present method were well coincident with the calculated values or the data obtained by the paper chromatography.</jats:p>

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