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Abstract: Two types of molecularly imprinted polymers (MIPs) for the simultaneous determination of six pyrethroid insecticides have been developed using deltamethrin (D-MIPs) and cypermethrin (C-MIPs) as template molecules. A comparison of the performance of D-MIPs, C-MIPs, and the corresponding non-imprinted polymers (NIPs) were conducted. Stronger group-selective interactions between the C-MIPs and the six pyrethroid insecticides were achieved. The MISPE method based on the C-MIPs displayed higher extraction recoveries (86.4 - 96.0%) with RSD values ranging from 2.4 to 7.8% for the six pyrethroid insecticides in aquaculture seawater. After the C-MIP cartridge procedure, the limits of detection and quantification for fenvalerate, deltamethrin, cypermethrin, cyfluthrin, and bifenthrin were in the 16.6 - 37.0 and 55.3 - 109.1 ng L-1 ranges, respectively, and 0.68 and 2.26 μg L-1 for phenothrin, respectively. The proposed MISPE method coupled with gas chromatography-electron capture detection was successfully used for the determination of the six pyrethroid insecticides in aquaculture seawater
Template and target information: pyrethroid insecticides, deltamethrin, fenvalerate, cyfluthrin, bifenthrin, phenothrin, cypermethrin
Author keywords: Molecularly imprinted polymers, pyrethroid insecticides, Gas chromatography-electron capture detection, solid phase extraction