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通过静电组装技术在碳圆盘电极(PGE)表面制备{聚二烯丙基二甲基氯化铵(PDDA)/多壁碳纳米管(MWCNT)}n/PDDA多膜,并采用循环伏安法在多膜表面电化学修饰一磷钼酸(PMo12)膜,构筑PGE/{PDDA/MWNTs}5/PDDA/PMo12复合膜修饰电极,研究该复合膜修饰电极电化学及其对溴酸盐(BrO3-)电催化还原性质.在此基础上建立毛细管电泳-PGE/{PDDA/MWNTs}5/PDDA/PMo12修饰电极电化学检法定饮用水中溴酸盐分析新方法.在优化实验条件下,电泳峰面积与溴酸根浓度在5.0×10-8～5.0×10-5mol/L范围内呈良好性关系(r=0.9954),检出为2.0×10-8mol/L(S/N=3).
The polydiallyldimethylammonium chloride (PDDA) / multiwalled carbon nanotube (MWCNT)} n / PDDA multilayers were prepared on the surface of carbon disk electrode (PGE) by electrostatic assembly technique and characterized by cyclic voltammetry (POM / PDDA / MWNTs) 5 / PDDA / PMo12 composite electrode was modified by electrochemical method on a multi-membrane surface to study the electrochemical behavior of the composite membrane modified electrode and its effect on bromate BrO3-) electrocatalytic reduction.On the basis of this, the capillary electrophoresis-PGE / {PDDA / MWNTs} 5 / PDDA / PMo12 modified electrode electrochemical detection of drinking water bromate analysis of new methods.In the optimal experimental conditions, The peak area of electrophoresis showed a good relationship with the concentration of bromate in the range of 5.0 × 10-8 ~ 5.0 × 10-5mol / L (r = 0.9954), and the peak area was 2.0 × 10-8mol / L (S / N = 3) .