分子印迹固相萃取-毛细管电泳检测葡萄酒中“敌百虫”
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国家自然科学基金项目-31171699- ;山东省高等学校科技计划项目-J11LC30- .


Molecularly Imprinted Solid-phase Extraction Coupled to Capillary Electrophoresis for Determination of Trichlorfon in Grape Wine
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    摘要:

    以制备的“敌百虫”分子印迹聚合物作为固相萃取吸附剂,建立了分子印迹固相萃取与毛细管电泳联用检测葡萄酒中痕量敌百虫的新方法. 样品中“敌百虫”分子被选择性富集到吸附功能材料上,然后用2mL甲醇/冰乙酸-90∶10, v/v-洗脱,氮吹后05mL双蒸水复溶,毛细管电泳仪分析. 该方法的最低检出限为75μg/L,连续重复5次的相对标准偏差为450%;对两种进口葡萄酒空白样品进行3个浓度的添加回收实验,回收率为803%~962%.

    Abstract:

    In this study, using the prepared trichlorfon molecularly imprinted polymer as sorbent, a novel method for the determination of trichlorfon residues in grape wine was developed by utilizing molecularly imprinted solid-phase extraction coupled to capillary electrophoresis -CE-. Trichlorfon in the sample was selectively adsorbed onto molecularly imprinted polymer -MIP-. After the sample loading was completed, the molecularly imprinted solid-phase column was eluted with 2mL methanol/acetic acid -90∶10, v/v-. The elution was condensed to dryness under a gentle flow of nitrogen, accurately re-dissolved with 05mL doubly deionized water -DDW-, and then injected into CE for analysis. The limit of detection -LOD- was 75μg/L, and the RSD was 450%. The blank grape wine samples spiked with trichlorfon at three levels were extracted and determined by this presented method with recoveries ranging from 803% to 962%.

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赵 涛,胡 燕,董笑含,张丽敏,徐志祥.分子印迹固相萃取-毛细管电泳检测葡萄酒中“敌百虫”[J].食品科学技术学报,2013,31(3):54-56.

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  • 在线发布日期: 2013-06-28
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