QUANTITATIVE METHOD FOR LIPID-SOLUBLE PHOSPHORUS COMPOUND

摘要

PROBLEM TO BE SOLVED: To provide a quantitative method for a lipid-soluble phosphorus compound that is used to evaluate a fine amount of a lipid-soluble phosphorus compound included in a metal salt.SOLUTION: A quantitative method for a lipid-soluble phosphorus compound includes: an aqueous solution forming process of dissolving a metal salt including a lipid-soluble phosphorus compound in water; an extracting process of adding an organic solvent to the obtained aqueous solution to extract the lipid-soluble phosphorous compound with the organic solvent; a recovery and volatilization process of recovering and volatilizing the organic solvent phase-separated from the aqueous solution; a production process of producing a water-soluble phosphorous compound from a sample left after the volatilization of the organic solvent; and a measurement process of measuring the aqueous solution of the water-soluble phosphorous compound by an element analysis device.