A new europium(III) PVC membrane potentiometric sensor based on 4-(2-hydroxybenzylideneamino)-6-methyl-3-thioxo-3,4-dihydro-1,2,4-triazin-5(2H) -one

被引：0
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作者：
Zamani, Hassan Ali [1 ]
Rajabzadeh, Ghadier [1 ]
Ganjali, Mohammad Reza [2 ]
机构：
[1] Department of Chemistry, Quchan Branch, Islamic Azad University, Quchan, Iran
[2] Department of Chemistry, Tehran University, Tehran, Iran
来源：
Bulletin of the Chemical Society of Japan | 2007年 / 80卷 / 01期
关键词：
A new europium ion-selective electrode based on 4-(2- hydroxybenzylideneamino)-6-methyl-3-thioxo-3,4-dihydro-1,2,4-triazin-5(2H)-one (HMTDT) as membrane carrier was prepared. The electrode has a wide concentration range between 1.0 × 10-1 and 1.0 × 10-6 mol dm-3 with a near-Nernstian slope of 19.7 ± 0.4 mV per decade and a detection limit of 7.8 × 10-7 mol dm-3. The potentiometric response is independent of the pH of the solution in the pH range 3.5-7.8. It has a relatively fast response time and can be used for at least 2 months without any considerable divergence in potentials. The proposed sensor had very good selectivities for a wide variety of metal ions. The practical utility of the electrodes has been demonstrated by their use as indicator electrodes in the potentiometric titration of Eu3+ ions with EDTA and for the determination of Eu3+ in different solutions. © 2007 The Chemical Society of Japan;
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页码：172 / 177
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