A potentiometric detector for following pH shifts in liquid chromatography |
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Authors: | Joseph Georges Mohamed Khalil |
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Affiliation: | Laboratoire de Chimie Analytique 3-UA 04 0435, Université Claude Bernard, Lyon I, 69622 Villeurbanne Cedex France |
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Abstract: | A potentiometric detector suitable for measurement of pH shifts caused by cation-exchange phenomena in reverse-phase liquid chromatography is described. A capillary flow-through glass pH electrode and a small reference electrode are included in a design that produces reliable results in the acid pH range. The detector is calibrated in the steady-state and dynamic modes with pH reference solutions in water and water-methanol mixtures. |
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