分子印记聚合物压电模拟生物传感器测定烟草中的绿原酸

DETERMINATION OF CHLOROGENIC ACID IN TOBACCO BY MOLECULARLY IMPRINTED POLYMER PIEZOELECTRIC BIO-(MIMETIC) SENSOR

为快速准确测定烟草中的绿原酸,基于压电石英晶体传感器灵敏的响应性能,结合分子印记聚合物的特异识别性能,研制出绿原酸分子印记压电体声波模拟生物传感器,还探讨了膜的修饰作用,验证了该传感器的印记效应,优化了实验条件。该法线性范围为5.0×10-8～1.0×10-4mol/L,回收率为96.7%～105.0%,RSD为3.7%,并用该法测定了一些烟草中的绿原酸含量。

IN ORDER TO DETERMINE THE CHLOROGENIC ACID (CGA) IN TOBACCO FAST AND ACCURATELY, A MOLECULARLY IMPRINTED POLYMER PIEZOELECTRIC QUARTZ CRYSTAL BULK ACOUSTIC WAVE BIO-MIMETIC SENSOR USING CGA AS TEMPLATE MOLECULES WAS DEVELOPED ON THE BASIS OF THE SENSITIVE RESPONSE OF PIEZOELECTRIC QUARTZ CRYSTAL AND THE SPECIFIC SELECTIVITY OF MOLECULARLY IMPRINTED POLYMER. THE MODIFYING FUNCTION OF COATING LAYER ON THE RESPONSE, THE IMPRINTING EFFECT AND THE OPTIMAL DETECTING CONDITIONS OF THE SENSOR WERE ALSO DISCUSSED. THE LINEAR RANGE OF THE SENSOR FOR CGA WAS FROM 5.0×10^(-8) TO 1.0×10^(-4) MOL/L. THE RECOVERY WAS FROM 96.7% TO 105.0%, AND RSD WAS 3.7%. THE CONTENTS OF CGA IN SEVERAL TOBACCO SAMPLES WERE DETERMINED BY THE SENSOR.