On the adsorption voltammetry of the boron-Beryllon III system: Part I. Determination of boron in plants and soils

摘要: A very sensitive electrochemical adsorptive voltammetric procedure for trace measurements of boron(III) in plants and soils is described. The complex with Beryllon III adsorbed on a dropping mercury electrode (DME) long lifetime, the reduction current accumulated measured by linear sweep voltammetry. In order to form III, it necessary boil solution 15 minutes. behavior explored. size peak, which appears at position between two peaks ligand, proportional boron concentration. Optimum experimental conditions include 0.05 M HOAc/0.25 NaOAc as supporting electrolyte, 1 × 10−4 pH 4.4, an initial potential −0.30 V (versus SCE). range determination 4 10−5 −1 M. relative standard error method 0.76% 3 10−6 (III) 3.4% 6 10−7 (III), respectively.