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.
复制标题
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
中科院分区:
文献类型:
--
作者:
S. K. Piendl;D. Geissler;L. Weigelt;D. Belder
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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