LIQUID-INTERFACED OSCILLATING GLOW-DISCHARGE DETECTOR FOR A FLOWING LIQUID-SYSTEM

A new liquid-interfaced oscillating glow discharge detector having a f requency and current response to femtomole and picomole quantities res pectively of potassium nitrate and sucrose injected into an aqueous fl owing eluent is presented. The glow discharge is formed in an argon at mosphere at ambient pressure between a platinum anode and a cathode co nsisting of an aqueous conducting solution. A detailed description of the appearance of the liquid-interfaced glow discharge at various elec trode distances and the occurrence of high-frequency oscillations is g iven.