Capacitance-conductance detector for high-pressure liquid chromatography. Application to alkaloids and fatty acids

Simultaneous conductivity and permittivity detector with a single cell for liquid chromatography

“…A detector that monitored either permittivity or conductivity by using two RC monostable circuits connected in series to give a variable mark-space ratio astable circuit was reported by Hashimoto et al (4). A cell, similar to that of Vespalec (5) was used to detect alkaloids and aliphatic amines in normal phase eluents and carboxylic acids (C8-C22) in reversed-phase eluents.…”