<p>A method of mass spectrometry is disclosed wherein ions are trapped for a period of time T within an AC or RF ion guide maintained at a pressure P wherein the product P x T is at least 1 mbar-ms. The effect of trapping the ions according to a preferred embodiment is that singly charged ions which may, for example, comprise unwanted background ions are substantially lost from the trap whereas multiply charged analyte ions are maintained within the ion trap and can then be released for subsequent mass analysis.</p>
申请公布号
WO03050843(A2)
申请公布日期
2003.06.19
申请号
WO2002GB05628
申请日期
2002.12.12
申请人
MICROMASS LIMITED;BATEMAN, ROBERT, HAROLD;HOYES, JOHN, BRIAN;WILDGOOSE, JASON, LEE;GILBERT, ANTHONY, JAMES
发明人
BATEMAN, ROBERT, HAROLD;HOYES, JOHN, BRIAN;WILDGOOSE, JASON, LEE;GILBERT, ANTHONY, JAMES