Patent ID: 8742331
Filing Date: 2014-06-03
Classification: H01J

Abstract:
1. A method of detecting at least one anion by ESI-MS, the method comprising: adding to a sample at least one dicationic liquid salt comprising a dicationic species corresponding in structure to Formula I: and at least one counter-anion, wherein the at least one counter-anion is OH − ; wherein: R is one or more substituents independently selected from the group consisting of alkyl, alkenyl, hydroxyl, alkoxy, carbocyclyl, carbocyclylalkyl, heterocyclyl, heterocyclylalkyl and hydroxyalkyl; m is zero, 1, 2, 3 or 4; B is a divalent fragment composed of a chain of one or more moieties selected from the group consisting of C n is selected from the group consisting of 1 to 20, inclusive, to form a complex; and