Pyrethroids molecular imprinted polymer were synthesized by precipitation polymerization

using phenyl ether biphenyl

a structural analogue of pyrethroids as the pseudo template.The optimal conditions for synthesis were as follows:the ratio of template molecule(phenyl ether biphenyl)

functional monomer(4 vinylpyidine) and cross linker(ethylene dimethacrylate) was 1∶6∶20

the reaction temperature was 70 ℃and the amount of thermal polymerization initiator was 1%.The synthesized molecularly imprinted polymers were characterized by scanning electron microscopy and their adsorption performances were determined.The maximum adsorption capacity of the polymers toward 60 μg·mL-1 diphenyl ether biphenyl eutectic was 6 041 μg·g-1.Results of the adsorption rate showed that the polymers could reach an adsorption equilibrium after 7 h.The absorption amounts of the synthesized polymers toward chlorpyrifos

bifenthrin

fenpropathrin

permethrin

cypermethrin and fenvalerate were 259，316，311，271，305 and 298 μg·g-1

while those of the non imprinted polymers were 169，188，181，183，151 and 142 μg·g-1

respectively.The selectivity of the imprinted polymers is higher than that of the non imprinted polymers.