【摘要】 以十八烷基三氯硅烷为偶联剂,采用分步合成法合成了烷基官能化的介孔分子筛C18-MCM-41,用元素分析、傅立叶红外光谱(FT-IR)、X射线衍射(XRD)对合成的复合材料进行表征,结果表明,有机官能化后材料仍保持介孔材料的结构特性。以该材料为固相微萃取涂层材料对水中的多环芳烃(萘、蒽、菲)进行了分析,方法的线性范围分别为5.0~250、0.4~300、0.5~400μg/L,检出限分别为5.0、0.10、0.25μg/L,加标回收率在94.3%~104.4%之间,分析结果令人满意,说明C18-MCM-41介孔材料可作为涂层材料用于固相微萃取。更多还原

【Abstract】 With octadecyltrichlorosilane as coupling agent,organic-inorganic complex material C18-MCM-41 was synthesized by two-step synthesis.The prepared C18-MCM-41 complex material was characterized by elemental analysis,XRD,FTIR and was used as the fiber coating for solid-phase microextraction(SPME) of polycyclic aromatic hydrocarbons(PAHs) in water.The experimental results show that C18-MCM-41 remains the structure of microporous material and can be used as the fiber coating for solid-phase microextraction.The C18-MCM-41 fiber coating SPME combined with high performance liquid chromatography(HPLC) was suceessfully applied to the analysis of PAHs in water.更多还原