Chemical Sensor For Determination Of Mercury In Contaminated Water | 10232
Journal of Analytical & Bioanalytical Techniques
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In this research, we constructed chemical sensor for determining mercury in contaminated water because we needed fast,
simple, low-cost, and accurate determination of mercury in different environmental systems. The constructed membrane
composed of polyvinyl chloride PVC as a matrix material, 1, 5-diphenylthiocarbazone (dithizone) as electroactive compound,
and di-n-butyl phthalate (DBPH) as a plasticizer. The optimum membrane composition 30% PVC, 65% DBPH, 5% dithizone
exhibited the better Nernstian response. The results showed that probe is high stability along the pH range from (3.5 to 8). The
electrode displays a linear log [Hg
] versus Electromotive force (EMF) response over a wide concentration range of (5?10
M) with Nernstian slope of 29.7?0.5 mV decade-1 and limit of detection 3?10
M. The proposed sensor shows relatively
high selectivity for mercury ion in different matrix solution, other ions had negligible interference effect on the reading.
Ion selective electrodes, Polymeric membranes, Determination of Mercury.
Ahmed Khudhair Hassan has completed his Ph.D. from Baghdad University in 2010. He is senior scientific researcher in Environment & Water
Research & Technology Directorate, Ministry of Science & Technology, Iraq. He has published several papers in reputed journals.
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