以水胺硫磷为模板分子,甲基丙烯酸(MAA)为功能单体,三羟甲基丙烷三甲基丙烯酸酯(TRIM)为交联剂,采用表面分子印迹技术,以商品化硅胶为基体,合成了对有机磷农药水胺硫磷具有良好选择性的表面分子印迹聚合物(MIP).用红外光谱(IR)、扫描电子显微镜(SEM)和元素分析等技术分别对表面印迹聚合物进行了结构表征和表面形态观察;静态吸附平衡实验和Scatchard分析表明,该印迹聚合物中存在着两类不同的结合位点,离解常数分别为4.84×10-3和15.2×10-3 mol/L.与非印迹聚合物相比,MIP对水胺硫磷有较大的特异性吸附能力,其印迹因子为2.73.
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