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has been cited by the following article:

• TITLE: Potentiometric Determination of Trace Amounts of Mercury (II) in Water Sample Using a New Modified Palm Shell Activated Carbon Paste Electrode Based on Kryptofix 5

  AUTHORS: Ahmed Abu Ismaiel, Mohamed Kheireddine Aroua, Rozita Yusoff

  KEYWORDS: Palm Shell Activated Carbon; Kryptofix®5; Ion Selective Electrode; Mercury

  JOURNAL NAME: American Journal of Analytical Chemistry, Vol.3 No.12, December 25, 2012

  ABSTRACT: A new modified palm shell activated carbon paste electrode based on 1,13-Bis(8-quinolyl)-1,4,7,10,13-pentaoxat-ride-cane ,8,8-(1,4,7,10,13-Pentaoxatridecylene)-diquinoline (Kryptofix?5) and plasticizing agent was prepared and studied as Hg2+ selective electrode. The best performance was observed with the electrode composition having the iono-phore-palm shell activated carbon-plasticizer composition 10%:50%:40% with Nernstian response over the concentration range of 1.0 × 10–8 - 1.0 × 10–2 M with a slope of 42 ± 1.5 mV per decade of concentration. The detection limit as determined from the calibration plot is 1.0 × 10–7 M. The proposed electrode shows good selectivity for Hg(II) with interfering ions. The response time of the electrode is fast (≤10 s), and can be used in the pH range of 3 - 11. The electrode was used to determine mercury in drinking water.