【摘 要】
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A new electrochemical sensor for determination ofisoproterenol (IP) is described.The sensor is based on carbon paste electrode (CPE) modified with 5-amino-2',4'
【机 构】
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Environment Department,Department of Chemistry
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A new electrochemical sensor for determination ofisoproterenol (IP) is described.The sensor is based on carbon paste electrode (CPE) modified with 5-amino-2',4'-dimethoxybiphenyl-2-ol (5ADMB) and takes the advantages of carbon nanotubes (CNTs).Under the optimum pH of 7.0,the oxidation of IP occurs at a potential about 210 mV less positive than that of the unmodified CPE.The oxidation currents increased linearly with two concentration intervals of IP,one is 0.09 to 20.0 μmol/L and,the other is 20.0 to 400.0 μmol/L.The detection limit (3σ) obtained by square wave voltammetry (SWV) was 39.0 nmol/L.The practical application of the modified electrode was demonstrated by determining IP in IP ampoule,urine and human blood serum samples.
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