Université de Jijel, Laboratoire de Matériaux: Elaborations-Propriétés-Applications, BP 98, Ouled Aissa, 18000 Jijel, Algeria.
Mater Sci Eng C Mater Biol Appl. 2013 Dec 1;33(8):5084-9. doi: 10.1016/j.msec.2013.09.005. Epub 2013 Sep 15.
Ammonium exchange with hybrid PVC-bentonite (mineral montmorillonite clay) thin film was revealed using FTIR spectroscopy, EDX, cyclic voltammetry and electrochemical impedance spectroscopy. The effect of ammonium exchange on the charge transfer resistance of PVC-bentonite hybrid thin film was attributed to a modification of the intersheet distance and hydration of bentonite crystals. The obtained impedimetric ammonium sensor shows a linear range of detection from 10(-4)M to 1M and a detection limit around 10(-6)M.
采用傅里叶变换红外光谱（FTIR）、能谱（EDX）、循环伏安法（CV）和电化学阻抗谱（EIS）研究了铵交换与复合 PVC-膨润土（矿物蒙脱石粘土）薄膜的相互作用。铵交换对 PVC-膨润土复合薄膜电荷转移电阻的影响归因于膨润土晶体层间距的变化和水合作用。所得到的阻抗式铵传感器的检测线性范围为 10(-4)M 至 1M，检测限约为 10(-6)M。
