Methods for quantitating water using ionic liquid salts
AssigneeSigma-Aldrich Co.
InventorDaniel W. Armstrong
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Abstract
This disclosure provides methods and devices for quantitating, separating and/or detecting water in a liquid, gas or solid sample comprising one or more chemicals, the method comprising: providing the liquid, gas or solid sample comprising water and the one or more chemicals; and exposing said liquid, gas or solid sample to at least one solid support including at least one dicationic and/or tricationic species of Formula I or II adsorbed, absorbed or immobilized on the solid support.
Claims13
A method for detecting or quantitating water in a liquid sample comprising:
- applying a liquid sample to a capillary column having a gas chromatography stationary phase comprising at least one tricationic species of Formula II:
- Gc(A)3 Formula II
- and a counter-ion,
- wherein Gc is phenyl, cycloalkyl, Si, C, N or P,
- wherein each A is independently selected from the group consisting of:
- wherein each of R1, R2, R3 and Rm is independently selected from alkyl, alkoxy, carbocyclyl, carbocyclylalkyl, heterocyclyl, heterocyclylalkyl and hydroxyalkyl or Rm can be H;
- and
- separating water from the liquid sample to detect or quantitate water in the liquid sample.
A gas chromatography method for detecting or quantitating a component in a liquid sample containing water, comprising:
- applying a liquid sample to a capillary column having a gas chromatography stationary phase comprising a dicationic species of Formula I or a tricationic species of Formula II and a counter-ion:
- wherein each R is independently selected from the group consisting of alkyl, alkoxy, carbocyclyl, carbocyclylalkyl, heterocyclyl, heterocyclylalkyl and hydroxyalkyl;
- each m is independently 0, 1, 2, 3 or 4;
- and s is 1, 2, 3, 4, 5 or 6,
- wherein Gc is phenyl, cycloalkyl, Si, C, N or P,
- wherein each A is independently selected from the group consisting of:
- wherein each of R1, R2, R3 and Rm, is independently selected from alkyl, alkoxy, carbocyclyl, carbocyclylalkyl, heterocyclyl, heterocyclylalkyl and hydroxyalkyl or Rm, can be H;
- separating a component from the liquid sample;
- and
- quantitating the component by using a thermal conductivity detector.
Dependencies are inferred from the claim text.