| 聚吡咯-肝素共聚膜修饰电极对钙离子的响应 |
| POTENTIAL RESPONSE OF A POLYPYRROLE/HEPARIN COMPOSITE FILM MODIFIED ELECTRODE TO CALCIUM ION |
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| 摘要: 研制了聚吡咯-肝素共聚膜修饰电极，并用电化学方法进行了表征。发现该修饰电极对钙离子呈Nernst响应，电极斜率为31.0 mV/pCa，线性范围是5.0×10-7～5.0×10-2 mol·L-1，可用于儿童发样中钙的测定，结果满意，还测定了该修饰电极对其他阳离子的电位选择系数。 |
| 关键词: 聚吡咯 肝素 Ca2+ 化学修饰电极 |
| 基金项目: |
| Abstract: The fabrication of a PPy-Heparin composite film modified electrode in pyrrole with coexistence of heparin is described. The characteristics of the PPy-Heparin modified electrode was studied with electrochemical methods. A linear response was observed for Ca2+ in the concentration range of 5.0×10-7 to 5.0×10-2 mol·L-1 with a slop of 31.0 mV/pCa. The influences of the activities of other cations (K+, Mg2+, Zn2+, Co2+, Cu2+ and Pb2+) in the solution were studied. The PPy-Heparin modified electrode was easy to make and very stable, which can be used for the detection of calcium in children′s hair. The results of detection was satisfactory. |
| Keywords: polypyrrole heparin calcium ion chemically modified electrode |
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| 杨可盛,侯士峰,方惠群.聚吡咯-肝素共聚膜修饰电极对钙离子的响应[J].无机化学学报,1999,15(2):201-204. |
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