Abstract: Spontaneous formation of an ordered nano-TiO2/p-tert-butylcalix[4]arene hybrid thin film imprinted by parathion has been achieved by self-assembled technique, and a sensor based on the imprinted film has been constructed for the selective determination of parathion. A linear response to parathion in the concentration range of 5.0 x 10-8 to 1.0 x 10-5 M was observed with a good correlation coefficient (γ2 = 0.992). The linear regression equation was Ip (μA) = 0.202C (μM) + 0.797 and the detection limit of the sensor was 1.0 x 10-8 M (S/N = 3). The imprinted film sensor has been applied to the determination of parathion in spiked vegetable samples and the recoveries were varied from 93.3 to 103.3% at 0.3 and 2.0 μM
Template and target information: parathion
Author keywords: Parathion, Nano-TiO2, self-assembling, molecular imprinting, sensor

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