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42 4 ’ , ’ 7 1006 5 , )
Abstract
: Paper spray mass spectrometry has received considerable attentions in recent
years due to its simple operation,low cost and without tedious sample pretreatment pr-i
or to ,paper spray ionization (PSI)as a type of electrospray-based
ionization source,there are few reports on exploring the ionization performance differ-
ences between it and two frequently used electrospray ionization (ESI)and nanoelectros-
pray ionization (nanoESI).Herein the ionization performance of above three ionization
sources was compared systematically by using gasolines,myoglobin,cytochrome c and
glycidyl azide polymer (GAP)as to the obtained results,the ioniza-
tion performance demonstrated the following trend:PSI<ESI<nanoESI,in which PSI
gave the softest ionization performance relative to other two ionization -
ally,when commercially available 92 # and 9 5 # (Research Octane Number,RON)
gasolines were used for analysis,PSI was favorable to give more intensive peaks for
国家自然科学基金 陕西省自然科学基础研究计划项目 陕西高校青年创新团队项目
(2 1 7 7 7 1 28);