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首页> 外文期刊>Chromatographia >Fiber-in-tube solid-phase extraction using a polyetheretherketone capillary, and effective on-line coupling with microcolumn liquid chromatography
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Fiber-in-tube solid-phase extraction using a polyetheretherketone capillary, and effective on-line coupling with microcolumn liquid chromatography

机译：使用聚醚醚酮毛细管的管内纤维固相萃取，以及与微柱液相色谱的有效在线耦合

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On-line coupling of fiber-in-tube solid-phase extraction (SPE), using polyetheretherketone (PEEK) tubing, with microscale liquid chromatography (LC) has been investigated. PEEK tubing and polymer filaments are introduced as new medium for extraction of phthalates - diethyl phthalate (DEP), dipropyl phthalate (DPP), and dibutyl phthalate (DBP). Approximately 300 pieces of polymer filament were packed into a PEEK capillary 100 mm long (0.25 mm i.d.) and the capillary was installed in the injection valve as the sample loop. Desorption and injection of the analytes were performed simultaneously without use of the desorption solvent required by conventional SPE methods. The results obtained showed that effective on-line coupling of this sample-preparation method with liquid chromatography and other liquid-phase separation techniques can be accomplished for the high-throughput analysis of complex mixtures, without large consumption of organic solvents. The limits of detection for these phthalates, approximately 1.0 ng mL(-1), and the extraction time, 10 min, indicate the future possibilities of this technique. [References: 39]
机译：已经研究了使用聚醚醚酮（PEEK）管与微型液相色谱（LC）在线耦合管内纤维固相萃取（SPE）。引入PEEK管和聚合物细丝作为提取邻苯二甲酸盐的新介质-邻苯二甲酸二乙酯（DEP），邻苯二甲酸二丙酯（DPP）和邻苯二甲酸二丁酯（DBP）。将约300根聚合物长丝装入100毫米长（内径0.25毫米）的PEEK毛细管中，并将该毛细管作为进样环安装在进样阀中。同时进行分析物的解吸和进样，而无需使用常规SPE方法所需的解吸溶剂。获得的结果表明，该样品制备方法与液相色谱法和其他液相分离技术的有效在线耦合可用于复杂混合物的高通量分析，而无需大量消耗有机溶剂。这些邻苯二甲酸盐的检出限约为1.0 ng mL（-1），萃取时间为10分钟，表明该技术的未来可能性。 [参考：39]

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