Indirect determination of boron in water by cathodic stripping voltammetry

Abstract

An indirect cathodic stripping voltammetric method for the determination of boron was described. The method is based on monitoring the peak current decrease of As(V) in the presence of mannitol, copper and selenium in sulphuric acid medium. The chemical and instrumental parameters affecting this peak current decrease were investigated and optimized. The calibration plot for boron was linear in the range of 9-100 mg/L. Limit of detection was calculated from the calibration curve to be 2.7 mg/L, and a relative standard deviation of 2.6 % at the 10 mg/L boron level (n = 7) was found. The method was applied to high boron-containing top water samples with recoveries in the range of 97-105%.