By crossliking with glutaraldehyde, acetylcholine esterase and bovine serum albumin are directly immobilized on the surface gate of a H+-ion-selective field-effect biosensor.In the mode of differential-signal determination, use of two biosensors makes it possible todetect organophosphorus insecticides such as dichlorvos at the level of 10-7 mol/L, with a linear range of 5 × 10-7~8 × 10-6 mol/L. This method has the advantages of stable performance and strong anti-interference ability. In the PB-buffer its li...
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