The electrolytic efficiency of amperometric detection in normal-phase high-performance liquid chromatography

Autor: Hari Gunasingham, B. T. Tay, K. P. Ang
Rok vydání: 1985
Předmět:
Zdroj: Analytica Chimica Acta. 176:143-150
ISSN: 0003-2670
DOI: 10.1016/s0003-2670(00)81641-4
Popis: The electrolytic efficiency of the wall-jet detector in normal-phase high-performance liquid chromatography (between 0.1 and 5%) is significantly less than its efficiency in reversed-phase separations. A large-volume wall-jet cel with a Ag/Ag+ reference serves as the detector system in evaluating the effects of various chromatographic conditions on efficiency. Anthraquinone, phenanthrenaquinone (both at 10-3–10-4 M) and three estrogen gen steroids (at 10-2–10-3 M) are used as samples with ethanol/ hexane eluents. The effect of pH depends on the sample; increased ethanol concentrations and lower flow rates improve the efficiency.
Databáze: OpenAIRE