Pulsed valve matrix-assisted ionization
Pulsed valve matrix-assisted ionization
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DOI:
10.1039/c7an00489c
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发表时间:
2017-05-21
期刊:
影响因子:
4.2
通讯作者:
Murray, Kermit. K.
中科院分区:
文献类型:
--
作者:
Banstola, Bijay;Murray, Kermit. K.
We have developed a new ionization approach for matrix-assisted ionization with high temporal resolution using an electrically actuated pulsed valve. Matrix and analyte samples are deposited on a thin metal foil and placed at the inlet of an ambient ionization mass spectrometer. When the pulsed valve is actuated, a short puff of high pressure gas impinges on the foil and ejects particulate from the sample on the opposite side. Highly charged ions are formed from the particles at the mass spectrometer inlet. Using this source, multiply charged protein ions are produced within a selectable 4 second time window.