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DETERMINATION OF CARBOXYLIC ACIDS BY ION-EXCLUSION CHROMATOGRAPHY WITH NON-SUPPRESSED CONDUCTIVITY AND OPTICAL DETECTORS
Citation:
Ming, Y., K. Hill, AND R. Walkup. DETERMINATION OF CARBOXYLIC ACIDS BY ION-EXCLUSION CHROMATOGRAPHY WITH NON-SUPPRESSED CONDUCTIVITY AND OPTICAL DETECTORS. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-93/133 (NTIS PB93181212), 1993.
Description:
Determination of carboxylic acids using non-suppressed conductivity and UV detections is described. he background conductance of I-octanesulfonic acid, hexane sulfonic acid and sulfuric acid at varying concentrations was determined. sing 0.2 MM I-octanesulfonic acid as a mobile phase and an injection volume of 300 ul, the detection limits range from 1 uM for formic acid to 10 uM for butyric acid. he conductivity detector was connected in tandem with a Waters 484 optical detector at 210 nm, which allowed the analysis of carboxylic acids from 0.01 mM to 10 mM. he dependence of the retention of carboxylic acids on the eluent pH is discussed.
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DETERMINATION OF CARBOXYLIC ACIDS BY ION-EXCLUSION CHROMATOGRAPHY WITH NON-SUPPRESSED CONDUCTIVITY AND OPTICAL DETECTORS