Nghiên cứu khả năng tạo phức của ortho-este tetra azophenylcalix[4]aren (TEAC) với Th(IV)

Abstract

A simple, sensitive and selective spectroscopy method was developed for the determination of Thorium based on complixation between Ortho-Ester Tetra azophenyl Calix[4]arene (TEAC) and Th(IV). In acid media, TEAC formed a 1:1 complex with Th(IV). Beer’s law was obeyed in the range 2.5´10^-6 – 2.5´10^-5 mol.l^-1 of Th(IV). The limited of detection was 1.0´10^{- 6} mol l^-1. This result could be applied for determining concentration of Thorium in various samples, geological, soil and radioactive waste samples.

Keywords: Chromoionophore; Calixarene; Thorium, Spectroscopy