Automatic multi-sample simultaneous multi-element analysis with a h.f. plasma torch and direct reading spectrometer

摘要: Abstract The equipment described for automatic multi-sample simultaneous multielement analysis has been in everyday use practical four years. Some important points its design are discussed and reasons advanced using a high-powered, free-running oscillator to excite plasma with two gas streams addition the stream carrying sample aerosol. frequently-used simple formulae inductance, appropriate long coils, were found inadequate; modified formulae, applicable short which agreed experimental data, used. Trace assay work can alike be performed good accuracy precision, convenient way. typical results given, an indication of versatility equipment.