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３１．０ｍＶ／ｐＣａ，线性范围是５．０×１０－７～５．０×１０－２ｍｏｌ·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。
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 Ca 2+ 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 +, Mg 2+ , Zn 2+ , Co 2+ , Cu 2+ and Pb 2+ ) 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
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
1999年第2期201-204,共4页
Chinese Journal of Inorganic Chemistry
基金
中科院长春应化所电分析化学开放研究实验室
江苏省自然科学基金
关键词
聚吡咯
肝素
化学修饰电极
钙离子
测定
polypyrrole heparin calcium ion chemically modified electrode
