Reagent - composition for the quantitative analysis of the inorganic phosphorus and dry, the analytical element for this purpose,

摘要

A reagent composition for the quantitative analysis of inorganic phosphorus, comprising xanthosine, purine nucleoside phosphorylase, xanthine oxidase and a color-former. The color-former is a precursor for forming a dye in the presence of hydrogen peroxide and peroxidase. The reagent composition of the invention is improved in storage stability and has a wider determination range. Also provided is a dry analysis element comprising a reagent layer containing therein the reagent composition of the invention.