A SILVER(I) PVC-MEMBRANE SENSOR BASED ON SYNTHESIZED DILAKTAM CROWN ETHER

作者：Masrournia Mahbobeh^*; Zamani Hassan Ali; Mohamadzadeh Haniyeh; Seyedi Seyed Mohammad; Ganjali Mohammad Reza; Eshghi Hossein

来源：Journal of the Chilean Chemical Society, 2009, 54(1): 63-67.

DOI：10.4067/s0717-97072009000100015

• Dilaktam Crown ether
• Silver
• sensor
• PVC Membrane
• Ion-selective electrode
• Potentiometry

In this work, we introduce a highly selective and sensitive silver(l) PVC-membrane sensor. Dilaktam Crown ether (DLCE) Was used as a membrane-active component to prepare a highly sensitive Ag(I)-selective polymeric membrane electrode. This sensor illustrated very good selectivity and sensitivity towards silver ions over a wide variety of cations, including alkali, alkaline earth, transition and heavy metal ions. The sensor exhibited a Nernstian behavior (with a slope of 59.8 /- 0.2 mV per decade) for a concentration range (1.0 x 10(-5)-1.0 x 10(-1) M) with a detection limit of 6.8 x 10(-6) M. It displayed a response time in the whole concentration range (similar to 20 s) and its usage exceeded a 75 days period in the pH range of 5.1-7.2. The proposed electrode application was found to be successful as ail indicator electrode in the titration with NaCl.

• 出版日期2009-3