Determination and Quantification of Vanadium(V) in Environmental Samples Using Chemically Modified Chitosan Sorbent

Abstract

The application of biopolymers such as chitosan is one of the emerging sorption methods for the removal of metal ions, even at low concentrations. A rapid, sensitive and selected method is described for preconcentrative determination of vanadium(V) using the synthesized 3-Hydroxybenzaldehyde-4 Amino antipyrine (HBAP), which was chemically immobilized on chitosan. This is easy to prepare in comparison to many other sorbents. The synthesized sorbent material was selective to vanadium(V) within a better response time of 30 min. The method was selective in presence of other foreign ions like Cl−, F−, , , Na+, Ca2+, Zn2+, Fe3+, Fe2+, Cu2+, Cr3+, EDTA, Mn2+, Co2+ and Ni2+. The calibration plots were linear over the concentration range of 0.5 µg∙L−1 to 7 µg∙L−1 of vanadium(V).