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SummaryThis paper describes an capillary electrophoresis (CE) method used to quantify both succinic acid and levulinic acid in an industrial production process. Measurement was performed by CE with indirect UV detection, using potassium hydrogen phthalate as the UV-absorbing additive. The electrolyte composition used was 5 mM potassium hydrogen phthalate at pH 7.0 containing 0.25 mM cetyl trimethylammonium bromide (CTAB) as an electrosmotic flow (EOF) modifier to reverse the EOE The method provides for improved sensitivity by employing an extended path length capillary, and for identification and quantification by the use of a standard addition method.

SummaryThis paper describes the application of capillary electrochromatography (CEC) to the rapid quantitative analysis of individual mono-and dihydroxy phenols in tobacco smoke. The method derived provides reproducible and quantitative analysis of real samples, in significantly shorter times than are achieved by current GC and HPLC methods.

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