Method for rapidly screening polychlorinated biphenyl by functionalized graphene polypyrrole modified electrode
A technology of graphene polypyrrole and polychlorinated biphenyls, which is applied in the field of rapid screening of polychlorinated biphenyls with functionalized graphene polypyrrole modified electrodes
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[0032] A method for rapid screening of polychlorinated biphenyls by functionalized graphene-polypyrrole-modified electrodes, using pyrrole as a conductive polymer, using potentiostatic polymerization to prepare β-CD functionalized Grp-modified GCE, through the probe molecule ferrocene and polychlorinated biphenyls The difference between the host-guest recognition ability of benzene and cyclodextrin, an electrochemical method for the rapid screening of polychlorinated biphenyls in water systems.
[0033] 1 Pyrrole and β-CD functionalized Grp to make a modified electrode, the steps are: take 20 mL of 0.5 mg / mL graphene oxide aqueous solution, add concentrated NH 3 (300 μL), hydrazine hydrate (20 μL) and β-CD (80 mg), then stirred in a water bath at 60°C for 4 h to obtain 0.25 mg / mL β-CD-Grp; pipette 5 mL of the above solution and 6.9 μL of pyrrole , add it to 5.0 mL 0.5 mol / L H 2 SO 4 The dissolved solution was heated to dissolve; after the dissolved solution was passed throu...
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