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首页> 外文期刊>Journal of mass spectrometry: JMS >Ionic liquid-assisted electrospray ionization of polysaccharides
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Ionic liquid-assisted electrospray ionization of polysaccharides

机译：多糖的离子液体辅助电喷雾电离

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摘要

In this work, we give the report of significant detection sensitivity improvement of electrospray ionization (ESI) mass spectra of polysaccharides by adding various ionic liquid compounds into samples. Mass spectra obtained were greatly simplified and appeared to be similar to spectra from matrix-assisted laser desorption/ionization due to the narrow charge number distribution. Mass spectra of polysaccharides with the attachment of either anion or cation of ionic liquid compounds were observed. No protonated or deprotonated polysaccharide ions were detected when ionic liquid compounds were added into samples. Little alkali-attached polysaccharide ions were observed. Ionic liquid-assisted ESI (ILA-ESI) mass spectrometry has significantly improved the detection sensitivity of large neutral polysaccharide compounds.
机译：在这项工作中，我们提供了通过在样品中添加各种离子液体化合物显着提高多糖电喷雾电离（ESI）质谱的检测灵敏度的报告。所获得的质谱图大大简化，由于电荷数分布较窄，因此看起来与基质辅助激光解吸/电离得到的质谱图相似。观察到带有离子液体化合物的阴离子或阳离子的多糖的质谱。当将离子液体化合物添加到样品中时，未检测到质子化或去质子化的多糖离子。几乎没有观察到碱附着的多糖离子。离子液体辅助ESI（ILA-ESI）质谱显着提高了大型中性多糖化合物的检测灵敏度。

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