基于聚苯胺/氧化钴的磷酸根修饰电极研究

研究了一种基于聚苯胺/氧化钴的磷酸根修饰电极。该电极以玻碳电极为基底电极，以掺杂钴离子的聚苯胺为电极敏感膜。通过实验比较，得到对磷酸二氢根响应较好的钴离子掺杂浓度。制成的电极能斯特响应线性范围在10－1～10－4 mol/L，斜率为－27.1 mV/dec，检测下限为9.3×10－5 mol/L；电极具有较短的响应时间，很好的稳定性和重复性，对磷酸根的检测具有一定的研究意义。

Research on phosphate radical modified electrodes based on polyaniline/cobalt oxide

Study on a phosphate radical ion-selective modified electrode based on polyaniline/cobalt oxide,which is based on glassy carbon electrode as basal electrode and the cobalt ions-doped polyaniline as sensitive film. Concentration of cobalt ions-doped,which responses well to dihydrogen phosphate ion is obtained by test comparison. The electrode has a linear response in the concentration range of 10-1~10-4 mol/L,with a slope of-27. 1 mV/dec and a detection limit of 9. 3 ×10-5 mol/L;the electrode has short response time,good stability and repeatability,the method has a certain significance for the detection of phosphate radical.