Rapid monitoring of copper by High-Sensitive Potentiometric Membrane Electrode based on 2-(2-4-Methoxybenzoyl)imino)-4-(4-methoxyphenyl)thiazol-3(2H)-yl)-2-phenylacetic acid

The potentiometric properties of copper ion-selective electrodes (ISEs) with liquid contact based on polymeric membrane were investigated. In this paper, 2-(2-((4-Methoxybenzoyl)imino)-4-(4-methoxyphenyl)thiazol-3(2H)-yl)-2-phenylacetic acid was synthesized and used as an ionophore for preparation of selective and sensitive ion selective liquid membrane electrode for potentiometric monitoring of trace amounts of Cu2+. This electrode exhibits a Nernstian response for Cu2+ ions over a concentration range (1.0×10-1 to 5.0×10-6 molL-1) with a slope of 30.65±0.4 mV per decade. The limit of detection of the sensor is 7.0×10-7 molL-1. The sensor has a relatively fast response time (<19 s) and a useful working pH range of 5.0–8.0. Interference of some cations was also evaluated.

کلیدواژه ها:

Copper ، Liquid Membrane Electrode ، Potentiometric ، thiazol-2(3H)-imine ، 2-(2-((4-Methoxybenzoyl)imino)-4-(4-methoxyphenyl)thiazol-3(2H)-yl)-2-phenylacetic acid