苯骈三唑阴离子选择性电极的研制

Preparation of a Benzotriazole-selec-tive Electrode

本文报道了一种以乙基紫－苯骈三唑（ＢＴＡ）阴离子缔合物为活性物的ＰＶＣ基质碳棒涂膜式ＢＴＡ阴离子选择性电极的研制及其电位响应特性。在２５℃时，电极的线性响应范围５×１０￣（－５）～１×１０￣（－２）ｍｏｌ／Ｌ，检测限１．１×１０￣（－５）ｍｏｌ／Ｌ，响应斜率５８ｍＶ。适宜的ｐＨ范围为９．０～９．６。将此电极用于内燃机车冷却液中ＢＴＡ含量的测定，获得了较为准确的分析结果。

benzotriazole-selective carbon-coat-ed electrode with ethyl violet-benzotriazoleassociated ion pair as the active material inpoly(vinylchloride ) and dibutylphthalateas the plasticizer at pH 9.0～9. 6 providesarapid ,nearly Nernst response to benzotri-azole(as a monovalent anion) in the rangeof 1.0× 10￣(-2) to 5.0×10￣(-5) mol/L.The de-tection limit is 1.1×10￣(-5) mol/L,The selec-tivity coefficients of several anions are alsoreported