合成了α-环糊精(α-CD)修饰的有机聚合整体材料,对合成的材料进行了表征,研究比较了a-CD修饰整体材料作为室温磷光固体基质的效果以及14种有机化合物在其上的室温磷光分析(RTP)行为.α-CD修饰的有机聚合整体材料背景干扰低,对二环芳烃类物质有较好的选择性和富集能力.在α-CD修饰膜上,萘和7,8苯并喹啉的分配常数分别为5.03×103和2.94×102,表明修饰材料对萘有较好的选择性.萘酚也能与修饰材料形成包络物.但是由于较强的极性和在水中的溶解性,不能被有效富集.对5.0×10-11 mol/mL萘,最大富集体积为300 mL.采用SPE-RTP,萘和7,8苯并喹啉的检出限分别为9.80×10-12和4.60×10-11 mol/mL,RSD小于3.7％；线性范围分别为5.00×10-11～8.00×10-9 mol/mL和6.00×10-11～5.00×10-10 mol/mL.应用修饰的膜片对土样中的萘进行选择性富集和测定,结果由GC-MS进一步确认.用环己烷一步提取和SPE-RTP测定,萘可以被选择性富集.在土壤样品中加萘标准0.012 8 mg,测得回收率(104.9±6.5)％.土样中萘的浓度为(5.61 ±0.12) mg/kg,与GC-MS的较为吻合.
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