Simple and Rapid Device for Mercury Detection Based on The Formation of Mercury(II)-Dithizonate on Polytetrafluoroethylene (PTFE) Membrane
Hermin Sulistyarti, Mega Madha Wijaya, Dewi Setyowati, Sutrisno Sutrisno, Erwin Sulistyo
J. Pure App. Chem. Res. Vol 8, No 2 (2019), pp. 185-196
Submitted: April 24, 2019     Accepted: July 08, 2019     Published: July 18, 2019
DOI: http://dx.doi.org/10.21776/ub.jpacr.2019.008.02.473

Abstract


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A new analytical device for mercury detection has been developed by doping dithizone on to hydrophobic PTFE (polytetrafluoroethylene) membrane to form a blue dithizone membrane which instantaneously changed to orange color of mercury(II)-dithizonate complex, when this dithizone membrane was contacted to mercury(II) solution. The higher concentration of mercury showed the greater intensity of the orange colour mercury(II)-dithizonate complex. The design and chemicals were optimized to obtain the best performance for mercury measurement. This method is prospective as mercury test kit for simple, low cost, and rapid semi-quantitative method for mercury(II) determination from 1-10 mgL-1 suits for on-site mercury detection and has been applied to cosmetics with satisfactory results.


Keywords : Mercury, test kit, dithizone, hydrophobic membrane, PTFE
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