A METHOD FOR DETERMINING TOTAL IRON IN AQUEOUS SOLUTIONS

摘要

A composition and an assay solution for the determination of dissolved iron concentration comprising an α-diimine compound and a reducing agent are described. The α-diimine compound acts as a colorimetric iron sensor. The α-diimine compound coordinates to ferrous ions in solution to give a colored diimine-iron complex. The absorbance of the resulting diimine-iron solution is measured and is a function of the analyte's iron concentration. The iron concentration of a solution can be determined by treating the solution with the present composition, measuring the absorbance, and comparing the absorbance to the absorbance of assay standards of known concentration.