Multiple Heart-Cutting Two-Dimensional Chip-HPLC Combined with Deep-UV Fluorescence and Mass Spectrometric Detection.

Multiple Heart-Cutting Two-Dimensional Chip-HPLC Combined with Deep-UV Fluorescence and Mass Spectrometric Detection.
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多中心切割二维芯片高效液相色谱结合深紫外荧光和质谱检测

DOI:
10.1021/acs.analchem.9b05206
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发表时间:
2020
影响因子:
7.4
通讯作者:
D. Belder
D. Belder
中科院分区:
化学1区
文献类型:
--
作者:
S. K. Piendl;D. Geissler;L. Weigelt;D. Belder

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在这项工作中,我们介绍了一种新的二维芯片为基础的高效液相色谱(2D芯片-HPLC)的方法,它使多个转移从第一维流出到第二个分离维度的柱头。通过以无死体积的方式在熔融石英芯片上合并进样、分离和检测功能,可以将所有柱外峰分散效应降至绝对最低。在第一和第二分离维度之后,分别在深UV光谱区域和电喷雾电离质谱中激发的固有荧光检测的应用使得能够对复杂样品进行无标记分析,如示例性地示出的农药混合物和胰蛋白酶消化物。
In this work, we introduce a new two-dimensional chip-based high-performance liquid chromatography (2D chip-HPLC) approach, which enables multiple transfers from the first dimension effluent onto the column head of the second separation dimension. By merging injection, separation, and detection features on a fused silica chip in a dead volume-free manner, all extra-column peak dispersion effects can be reduced to an absolute minimum. The application of intrinsic fluorescence detection with excitation in the deep-UV spectral region and electrospray ionization mass spectrometry after the first and second separation dimension, respectively, enables the label-free analysis of complex samples, as exemplarily shown for a pesticide mixture and a tryptic digest.
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发表时间: 2011-02-01
影响因子: 7.4
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