Direct characterization of bulk samples by internal extractive electrospray ionization mass spectrometry.

Direct characterization of bulk samples by internal extractive electrospray ionization mass spectrometry.
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通过内部萃取电喷雾电离质谱法直接表征散装样品

DOI:
10.1038/srep02495
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发表时间:
2013
期刊:
影响因子:
4.6
通讯作者:
Chen, Huanwen
Chen, Huanwen
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Zhang, Hua;Gu, Haiwei;Yan, Feiyan;Wang, Nannan;Wei, Yiping;Xu, Jianjun;Chen, Huanwen

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一种称为内萃取电喷雾电离质谱法(iEESI-MS)的直接分析策略,结合了在原位电喷雾电离质谱法中溶剂萃取大量样品中的化学物质,已经建立了具有分子特异性的直接表征大量样品内部的分析策略。该方法允许对分布在三维体积(例如,1 ~ 100 mm3)的各种合成和生物基质(例如,口香糖、叶子、水果、根、猪肉、肺组织)中的分析物进行定性和定量分析,而无需捣碎样品或基质分离。使用不同的萃取溶剂,在iEESI-MS分析过程中观察到样品体积内化学物质的在线色谱分离。该方法具有分析速度快、灵敏度高、样品消耗少、样品制备和/或降解少等特点,为植物科学、临床诊断、催化剂研究和材料科学等领域的先进应用提供了独特的可能性。
A straight-forward analytical strategy called internal extractive electrospray ionization mass spectrometry (iEESI-MS), which combines solvent extraction of chemicals inside a bulk sample within situelectrospray ionization mass spectrometry, has been established to directly characterize the interior of a bulk sample with molecular specificity. The method allows both qualitative and quantitative analysis of analytes distributed in a 3-dimensional volume (e.g., 1 ~ 100 mm3) of various synthetic and biological matrices (e.g., chewing gum, leaves, fruits, roots, pork, lung tissues) without either mashing the sample or matrix separation. Using different extraction solvents, online chromatographic separation of chemicals inside the sample volume was observed during iEESI-MS analysis. The presented method is featured by the high speed of analysis, high sensitivity, low sample consumption and minimal sample preparation and/or degradation, offering unique possibilities for advanced applications in plant science, clinical diagnosis, catalyst studies and materials science.
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