Nanogram determination of mnii catalyst in the degradation of p-bromoaniline by periodate ion

Abstract

A procedure has been developed for the specific estimation of MnII by determining its catalytic consequence on the deterioration of p-bromoaniline by periodate ion spectrophotometrically in the acetone water medium. The calibration curves for MnII in aqueous solutions were found to be linear over the concentration range of 1.06ng/mL to1254ng/mL at pH 5.5with detection limits in the range of 1.04-1.72ngcm-2. The calculated RSDs of the method (n = 6) were 0.34–1.12 % for the concentration interval of MnII from 1.06 to 1254ng/mL. The alter in the reaction mixture’s absorbance was spectrophotometrically recorded at 456nm in periodic intervals. For the estimation of MnII in aqueous solutions, this process was referred to and simultaneously compared with the reported various methods. Various parameters related to the determination of MnII as initial rates of the reaction, rate constant, molar extinction coefficient, Sandell’s sensitivity, percentage recovery, correlation coefficient and the effect of interferants, etc. are being presented and discussed in this communication.