The Development Of Mercury Ion Selective Electrode With Ionophore 7,16-Di-(2-Methylquinolyl)-1,4,10,13-Tetraoxa-7,16-Diazacyclooctad ecane (DQDC)

Eidi Sihombing, Manihar Situmorang, Timbangen Sembiring and Nasruddin Nasruddin

Modern Applied Science, 2015, vol. 9, issue 8, 81

Abstract: The development of mercury ion selective electrode (ISE-Hg) by using ionophore 7,16-Di-(2-methylquinolyl)-1,4,10,13-tetraoxa-7,16-diazacyclooctadecane (DQDC) in an electrode membrane sensing is explained. The study is aimed to construct an ion selective electrode for mercury by immobilization of ionophore DQDC in a polymeric PVC membrane electrode. Membrane electrode was constructed by casting and spin coated methods from the mixture of DQDC and plastisizer in a polymeric PVC matrix dissolved in a tetrahydofuran solvent. The membrane has been characterized and used as a sensing material in an ISE-Hg. The developed ISE-Hggive sensitive and selective response to mercury, working range linearity lies between 0.005 mM – 1.0 mM Hg2+, slope 25.82 mV per decade concentration of Hg2+ (r2 = 0.998).

Date: 2015
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