| 摘要 |
<p>A method of mass spectrometry is disclosed comprising: providing a source 2 of precursor ions and reagent ions for reacting with said precursor ions; providing a reaction region 12 downstream of said source 2; providing an ion mobility separator 8 between said source 2 and said reaction region 12; providing a bypass cell 14 between said source 2 and said reaction region 12 for guiding ions from said source 2 to said reaction region 12 without the ions passing through said ion mobility separator 8; guiding said precursor ions from said source 2, through said ion mobility separator 8 so that said precursor ions separate according to their ion mobility, and into said reaction region 12; and guiding said reagent ions from said source 2, through said bypass cell 12 and into said reaction region 12; wherein the reagent ions react with the precursor ions within the reaction region 12 to produce product or fragment ions.</p> |
