Preconcentration of Aromatic Compounds in Aqueous Samples with a Polymer-coated Fiber-packed Capillary and Subsequent Temperature-programmed Elution with Water for Pseudo-2D LC Separations
Preconcentration of Aromatic Compounds in Aqueous Samples with a Polymer-coated Fiber-packed Capillary and Subsequent Temperature-programmed Elution with Water for Pseudo-2D LC Separations
复制标题
DOI：
10.2116/analsci.31.1137
复制
发表时间：
2015-11
影响因子：
1.6
通讯作者：
Toshiaki Tazawa;Y. Mori;Akira Kobayashi;K. Nakane;Tomoya Monobe;I. Ueta;Yoshihiro Saito
中科院分区：
文献类型：
--
作者：
Toshiaki Tazawa;Y. Mori;Akira Kobayashi;K. Nakane;Tomoya Monobe;I. Ueta;Yoshihiro Saito
成功地引入了一束聚合物包覆细丝作为萃取介质，用于芳香族化合物水溶液的预富集。在室温下，简单地将含水样品溶液泵入萃取毛细管进行萃取。提取的分析物依次用纯水洗脱，并在烤箱中对提取毛细管进行程控加热。结果表明，聚合物包覆纤维填充毛细管可用于各种含水样品的分析。通过自制的基于阀的调制器，将从纤维填充毛细管洗脱的馏分引入到传统的微柱液相色谱（micro-LC）系统中，开发了一种在线耦合萃取/分离系统，并证明了伪二维（pseudo-2D） LC分离水溶液中芳香族化合物的可能性。
A bundle of polymer-coated filaments was successfully introduced as an extraction medium for the preconcentration of an aqueous solution of aromatic compounds. The extraction was simply carried out with pumping the aqueous sample solution to the extraction capillary at ambient temperature. The extracted analytes were sequentially eluted with a flow of pure water using temperature-programmed heating of the extraction capillary in an oven. The results clearly suggest that the polymer-coated fiber-packed capillary could be employed in the sample preparation process for the analysis of various aqueous samples. Introducing the fractions eluted from the fiber-packed capillary to a conventional microcolumn liquid chromatography (micro-LC) system via a home-made valve-based modulator, an on-line coupled extraction/separation system was developed and a possibility to a pseudo-two-dimensional (pseudo-2D) LC separation of aromatic compounds in aqueous matrices has also been demonstrated.