铊(Ⅰ)离子电化学传感器的研究 1.光聚合铊离子敏感膜电极

On Thallous Ion Electrochemical Sensor Ⅰ.Photopolymerized Sensitive Membrane Electrode of Thallous Ion

以合成的二种含16-冠-5衍生物的肉桂酸酯分别制得光聚合敏感膜涂铜棒和PVC膜铊(1)离子电极。涂铜棒电极对Tl^+的响应线性范围为3×10^(-5)～1×10^(-2)mol/L,斜率为48mV/pTl^+,选择系数K_(Tl)_+^(pot),k^+=0.12比之相应的PVC膜电极有较长的寿命。

The sensitive membrane electrode of thallous ion based on the photopolymerization of cinnamic, esters containing derivatives of 16-crown-5 synthesized in our laboratory was prepared. The Tl+-electrode with the sensitive membrane at the end of copper rod sleeved by PVC tube exhibited responses in the range of 3× 10-5-1 × 10-2mol/L for TINO, with the slope of 48 mV/pTl+ and selectivity coefficient KTipot+,K+ of 0.12 , and its lifetime is longer than that of the corresponding PVC membrane electrode.