Abstract

Zahra Ghajani¹*, Maryam Ordbar²,Mohammad Mahdi Ahari-Mostafavi¹, Maryam Rezaei-Bina¹ and Jahanbakhsh Ghasemi³

In this paper, a spectrophotometric method for simultaneous determination of Co (II) and Ni (II) using 4-(5-Br-2 pyridylazo)-1,3-diaminobenzene (5-Br-PADAB) as a chelating agent is introduced. During the study, the parameters controlling behavior of the system were examined and optimum conditions were selected. The impact of pH on the sensitivity and selectivity was investigated according to net analyte signal. A partial least squares multivariate calibration procedure was used for the analysis of binary mixtures of Co (II) and Ni (II) between 200 and 700 nm over the range of 85 – 1300 and 100 -1010 ng ml

Nickel; Cobalt; 5-Br-PADAB; Simultaneous determination; PLS

[ View HTML Full Text]