Abstract: A new quartz crystal sensor using molecularly imprinted polymers(MIPs) as recognition element has been prepared for the fast determination of profenofos.Firstly,the molecularly imprinted polymers were prepared by precipitation polymerization,and then the polymer particles were fixed on the serface of the electrode. Scanning electron microscopy(SEM) and atomic force microscopy(AFM) were employed to evaluate the obtained imprinted polymer particles and the MIP sensitive film coated on the electrode.The sensor exhibits a linear relationship between the frequency shift and profenofos concentration in the range of 10 ng/mL to 1000 ng/mL (y = 0.139[rho] + 2.26, r=0.9984).The experiments indicate that the obtained sensor has high sensitivity,excellent selectivity and good reproducibility.
Template and target information: profenofos
Author keywords: quartz crystal microbalance, Molecularly imprinted polymers, Profenofos, detection