High Sensitivity and Selectivity of Mercury Sensor Based Membrane Ion Selective Electrode with Sputtring Method

Abstract

Development of ion selective electrodes of mercury (ISE-Hg) using ionophores has been widely used in previous studies. However, in this study the used ionophores were prepared by synthesizing an active compound of a base material 1,4,10,13-tetraoxa-7,16-diazacyclooctadecane (by adduct via a ratio of 3:10) to yield 7.16-dithenoyl ionophore - 1,4,10,13-tetraoxsa-7,16-diazacyclooctadecane (DTODC). The membrane as an ISE electrode component is made from a mixture of the synthesis of the DTODC, PVC, KTpClPB and the THF. A comparison result of characterization with Ag/AgCl electrode shows that the ISE of azacrown derivative ionophorant compounds with high sensitivity and selectivity in the determination of mercury metal ion levels is obtained.