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《Chinese Journal of Analytical Chemistry》 2010-05
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Preparation and Application of Atrazine Molecularly Imprinted Solid Phase Extraction Pillar

WANG Yan-Hong1, HUO Jia-Ping1,2, ZHANG Hong1, WANG Shi-Cheng1,SI Shi-Hui2, LIN Gui-Feng1, LI Guo-Chen1, QI Wei11(Institute of Applied Ecology Chinese Academy of Sciences, Shenyang 110015)2(Institute of Chemistry and Chemical Engineering, Central South University, Changsha 410083)  
The molecular imprinted polymers(MIPs) was synthesized by polymerization for 17 h using atrazine as template, α-methacrylic aid(MAA) as monomer, ethylene glycol dimethacrylate(EDMA) as cross-linker and 2,2-azobisisobutyronitrile(AIBN) as initiator. This polymer could specially recognize atrazine. The polymers was grinded, sieved, washed and packed into cartridges. The adsorbability of the solid phase extraction(SPE) pillar being stuffed with the polymers was 600 times compared with that of the polymer sphere, and the extraction time of this SPE pillar was only 1/60 compared with that of polymer sphere, the recovery was 90% testing by HPLC. The SPE pillar could enrich atrazine at the concentration less than 2×10-8 mol/L in the water sample with the recovery of 89.3%. In comparison with C18 pillar, the MIPs-SPE pillar used only 1/3 time and 1/4 reagent, and got higher recovery, as well, purified the sample water more drastically, decreased the disturbance of peculiar peaks, improved the sensitivity and could protect the instrument against damage. And the water for agricultures could be tested using this method.
【Fund】: 中科院重要方向项目(No.KSCX2-YW-N-035);; 财政部专项绿色农业科学研究与示范项目(No.LSNY-2007-10);; 沈阳市大型仪器专项(No.2008GX-034)的资助
【CateGory Index】: X839.2
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