Generation of multiply charged ions for tandem mass...

Details Generation of multiply charged ions for tandem mass... Generation of multiply charged ions for tandem mass...

2006-08-24

2008-11-04

Nguyen, Kiet T (Department: 2881)

Radiant energy

Ionic separation or analysis

With sample supply means

C250S281000, C250S282000

Reexamination Certificate

active

07446312

ABSTRACT:
Multiply-charged ions are generated from singly-charged ions of analyte substances. The singly-charged ions, which are supplied by many types of ion sources, are accelerated, together with donor ions of substances which have only a very low proton affinity, into a reaction cell. In the reaction cell, protons are transferred from the donor ions to the analyte ions to protonate the analyte ions and increase the ion charge. The multiply-charged analyte ions are subsequently fragmented by a variety of techniques and mass analyzed.

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He, et al., “Increasing the Negative Charge of a Macroanion in the Gas Phas via Sequential Charge Inversion Reactions”, Analytical Chemistry, Jul. 15, 2004, pp. 4189-4192, vol. 76, No. 14, American Chemical Society.

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