三唑醇分子烙印聚合物的吸附特性

实验采用分子烙印技术合成了对农药三唑醇有特异性作用的分子烙印聚合物(molecularly im-printed polymer,MIP).通过平衡吸附实验,评价了其对三唑醇的亲和力和选择性.与非烙印聚合物相比,分子烙印聚合物对三唑醇表现了较强的亲和力;Scatchard分析表明,以甲基丙烯酸为功能单体,以三唑醇为模板的分子烙印聚合物,通过离子作用和氢键作用可形成两类结合位点.用多点结合模型计算两类不同结合位点的离解常数为Kd1=2.80×10-4mol/L,Kd2=9.71×10-3 mol/L.实验表明,该聚合物对三唑醇有高亲和力和选择性,为在生物样品中选择富集三唑醇提供了可能性.

Adsorption Characteristic of Triadimenol-imprinted Polymer

A molecular imprinting polymer particular effect for triadimenol was prepared by molecular imprinting technique. Its binding and selectivity to triadimenol were evaluated by batch adsorption experiments.Triadimenol-imprinted polymer exhibited higher affinity to triadimenol compared to non-imprinted polymer;Scatchard analysis indicated that the imprinted polymer using methacrylic acid(MAA)as functional monomer could form two kinds of binding sites by ionic and hydrogen bond.The multiple-sites binding modle was used to calculate the maximum number of binding sites and dissociation constants. The dissociation constants were estimated to be K_(d1)=2.80×10~(-4) mol/L and K_(d2)=9.71×10~(-3) mol/L . It's possible to be a good way in selective enrichment and determination of trace triadimenol in complex samples.