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《Chinese Journal of Analytical Chemistry》 2007-04
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Rapid Removal of Template from Molecularly Imprinted Polymers by Accelerated Solvent Extraction

Wu Peng-Ju1,2, Yang Jun*1,2, Su Qing-De1,2, Gao Yun1, Zhu Xiao-Lan1, Cai Ji-Bao21(Research Center of Tobacco and Health, University of Science and Technology of China, Hefei 230052)2(Department of Chemistry, University of Science and Technology of China, Hefei 230026)  
A new extraction method to remove template from molecularly imprinted polymer (MIP) and reduce template bleeding by accelerate solvent extraction (ASE) has been developed. After optimizing the extraction solvent and temperature, the method was performed to remove template from nicotine molecularly imprinted polymer at 80℃ with 300 mL CH3OH/CH3COOH (90∶10, V/V). The setting of the ASE parameters as follows: 5 min heat-up, 8 min static period, 100 s purge and 10.4 MPa extraction pressure. The extraction efficiency of nicotine from MIP was 94.2%. 20 mg MIP polymer were packed into 3 mL empty solid-phase extraciton cartridge and 10 mL of CH3OH/CH3COOH (90∶10, V/V) were passed through the cartridge. The elution solvent was collected and then analyzed by high performance liquid chromatogrpahy. The bleeding amount of nicotine was 9.8 μg/L after extraction. The extraction procedure was completed in 70 min. In contrast with soxhlet extraction and ultrasonic assisted extraction, ASE was more effective at rapid removal of template from molecularly imprinted polymer.
【Fund】: 国家自然科学基金资助项目(No.20405013)
【CateGory Index】: O652
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