Direct spectrophotometric method for determination of traces of boron in iron, steels and other compounds.

For the determination of traces of boron in iron, low- and high-alloy steels and other materials a direct spectrophotometric method was developed. In this method the absorbance of the boron-Curcumin complex formed in the sample solution is compared with the absorbance of another aliquot of sample solution wherein the boron is rendered inactive with fluoride before the Curcumin is added.