Electrode for Emission Spectrochemical Analysis by Solution Method

The electrode used for the study is of a right pyramid cut out from a carbon rod of 6mm in diameter.The counter electrode is of the same make.When the pyramidal part of the electrode is steeped in a sample solution and taken out immediately, the sample solution that adhered to the electrode becomes hemispherical by its surface tension with the diameter of the electrode.In ignition, a capillary pippet is provided to supply the sample solution to maintain a stable and continuous excitation. When compared with rotating disk electrode, porous cup electrode and metallic pin electrode, pyramidal electrode was found equal to metallic pin electrode in reproducibility and rapididity of analysis.