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Bulletin of the Korean Chemical Society v.26 no.4, 2005년, pp.579 - 584   피인용횟수: 2

Zn2+ PVC-based Membrane Sensor Based on 3-[(2-Furylmethylene)amino]-2-thioxo-1,3-thiazolidin-4-one

Ganjali, Mohammad Reza    (Department of Chemistry, Tehran University   ); Zamani, Hassan Ali    (Department of Chemistry, North Tehran Branch, Azad University   ); Norouzi, Parviz    (Department of Chemistry, Tehran University   ); Adib, Mehdi    (Department of Chemistry, Tehran University   ); Rezapour, Morteza    (Department of Chemistry, Tehran University   ); Aceedy, Mohammad    (Department of Chemistry, Tarbiat Modarres University  );
  • 초록

    The 3-[(2-furylmethylene)amino]-2-thioxo-1,3-thiazolidin-4-one (FTT) was used as an excellent ionophore in construction of a $Zn^{2+}$ PVC-based membrane sensor. The best performance was obtained with a membrane composition of 30% poly(vinyl chloride), 62% nitrobenzen (NB), 3% FTT and 5% sodium tetraphenyl borate (TBP). This membrane sensor shows very good selectivity and sensitivity towards $Zn^{2+}$ over a wide variety of cations, including alkali, alkaline earth, transition and heavy metal ions. The membrane sensor revealed a great enhancement in selectivity coefficients for $Zn^{2+}$ ions, in comparison to the previously reported $Zn^{2+}$ membrane sensors. Theoretical studies also showed the selective interaction of TFF and $Zn^{2+}$ ions. The proposed membrane sensor exhibits a Nernstian behavior (with slope of 29.3 ${\pm}$ 0.3 mV per decade) over a wide concentration range (1.0 ${\times}$ $10^{-6}$ -1.0 ${\times}$ $10^{-2}$ ) with a detection limit of 8.5 ${\times}$ $10^{-7}$ M (52 ng mL $^{-1}$ ). It shows relatively fast response time, in the whole concentration range ( $\lt$ 20 s), and can be used for at least 10 weeks in a pH range of 3.0-7.0. The proposed membrane sensor was successfully used in direct determination of $Zn^{2+}$ ions in wastewater of industrial zinc electroplating companies, and also as an indicator electrode in titration with EDTA.


  • 주제어

    3-[(2-Furylmethylene)amino]-2-thioxo-1,3-thiazolidin-4-one .   $Zn^{2+}$ membrane sensor .   Potentiometry .   PVC.  

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  • 이 논문을 인용한 문헌 (2)

    1. 2005. "" Bulletin of the Korean Chemical Society, 26(11): 1881~1884     
    2. 2007. "" Bulletin of the Korean Chemical Society, 28(1): 68~72     

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