Characterization of a new new ag+ -selective electrode based on n3s5-thiaazacrown ether as neutral ionophore

• JUN ZHANG ^[1] ; JIA WANG DING ^[2] ; WEI QIN ^[2]
  1. [1] Hainan Medical University

     Hainan Medical University

     China

     
  2. [2] Chinese Academy of Sciences

     Chinese Academy of Sciences

     China

     
• Localización: Journal of the Chilean Chemical Society (Boletín de la Sociedad Chilena de Química), ISSN-e 0717-6309, ISSN 0366-1644, Vol. 56, Nº. 1, 2011, págs. 580-583
• Idioma: inglés
• Enlaces
  • Texto completo
• Resumen

  • A N3S5-azathiacrown ether has been newly synthesized in high yield. Electrode using this compound as ionophore shows high selectivity and sensitivity towards Ag+. The effect of plasticizers and ion-exchanger on the properties of electrode was also studied and detection limit of 3.8 x 10-8 M Ag+ was obtained. This sensor has a fast response time of <12 s and performs satisfactorily over a wide pH range of 3.6-8.2. The electrode was also successfully used as indicator electrode in the titration of Cl- in tap water.