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Generating Electrospray Ionization on Ballpoint Tips
Analytical Chemistry ( IF 6.7 ) Pub Date : 2016-05-03 00:00:00 , DOI: 10.1021/acs.analchem.5b03990
Baocheng Ji 1 , Bing Xia 1 , Yuanji Gao 1 , Fengwei Ma 1 , Lisheng Ding 1 , Yan Zhou 1
Affiliation  

In this study, we report a simple and economical ballpoint electrospray ionization mass spectrometry (BP-ESI-MS) technique. This combines a small ballpoint tip with a syringe pump for the direct loading and ionization of various samples in different phases (including solution, semisolid, and solid) and allows for additional applications in surface analysis. The tiny metal ball on the ballpoint tip exhibits a larger surface for ionization than that of a conventional sharp tip end, resulting in higher ionization efficiency and less sample consumption. The adamant properties of the ballpoint tip allow sampling by simply penetrating or scraping various surfaces, such as a fruit peel, paper, or fabric. Complex samples, such as fine herbal powders and small solid samples, could be stored in the hollow space in the ballpoint socket and subsequently extracted online, which greatly facilitated MS analysis with little to no sample preparation. Positive ion mode was attempted, and various compounds, including amino acids, carbohydrates, flavonoids, and alkaloids, were detected from different types of samples. The results demonstrated that the special and excellent physical characteristics of ballpoint tips allowed for fast and convenient sampling and ionization for mass spectrometry analysis by the BP-ESI-MS method.

中文翻译:

在圆珠笔尖上产生电喷雾电离

在这项研究中,我们报告了一种简单且经济的圆珠电喷雾电离质谱(BP-ESI-MS)技术。这将一个小的圆珠笔尖端与一个注射泵结合在一起,可直接加载和电离不同相(包括溶液,半固体和固体)中的各种样品,并允许在表面分析中进行其他应用。圆珠笔尖端上的微小金属球比传统的尖锐尖端具有更大的电离表面,从而具有更高的电离效率和更少的样品消耗。圆珠笔尖端的坚固特性允许通过简单地穿透或刮擦各种表面(例如果皮,纸张或织物)来进行采样。复杂的样本,例如精细的草药粉和小的固体样本,可以将其存储在圆珠笔插座的空心空间中,然后在线提取,这极大地简化了MS分析,几乎不需要样品制备。尝试采用正离子模式,并从不同类型的样品中检测到各种化合物,包括氨基酸,碳水化合物,类黄酮和生物碱。结果表明,圆珠笔尖端的特殊和优异的物理特性可以通过BP-ESI-MS方法对质谱分析进行快速便捷的采样和电离。
更新日期:2016-05-03
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