CARBON WIRE AMPEROMETRIC FLOW THROUGH DETECTOR

摘要

A carbon wire amperometric flow through detector is describedwhich is easily constructed at low cost for application to flow injectionanalysis,continuous stream analysis and liquid chromatography.Thetheoretical limiting current of the detector is 2.14×106nCD2/3uf1/3 with 36%actual current efficiency.By use of flow injection analysis,thedetecting limits for Ag（I）and Cr（VI）had achieved 1 ppb and 0.4 ppbrespectively with 1.2%（n=20）relative standard deviation after preliminaryexperiments.