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Silver(I)-selective PVC membrane electrodes based on macrocyclic schiff bases

机译:基于大环席夫碱的银(I)选择性PVC膜电极

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摘要

The potentionetric characteristics of poly (vinyl chloride)(PVC) membreane electrodes based on three different sizes of macrocyclic Schiff bases are described.The electrode incorporating a 12-membered macrocyclic Schiff base shows a near Nernstianresponse towards silver (I) ranging from 1x10~-6 to 1x10~-1 mol L~-1 with a slope of 54.5 mB decade~-1 and high selectivity over various ions including Hg~2+,Pb~2+,and Cd~2+.The electrode based on a 14 or 18-membered macrocyclic Schiff base displays ratehr poor response towards silver (I).
机译:描述了基于三种不同大小的大环席夫碱的聚氯乙烯(PVC)膜电极的电位特性。包含12元大环席夫碱的电极显示出对银(I)的近似Nernstian响应,范围为1x10〜- 6至1x10〜-1 mol L〜-1,具有54.5 mB十进制〜-1的斜率,并且对包括Hg〜2 +,Pb〜2 +和Cd〜2 +在内的各种离子具有高选择性。基于14或18元大环席夫碱显示对银(I)的反应速率较差。

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