Evaluation of totally pyrolytic graphite cuvettes for electrothermal atomic-absorption spectrometry

摘要: Owing to the problems, such as porosity and carbide formation, encountered with conventional electrographite furnace tubes, a study has been undertaken select an alternative material that would overcome them. The suitability of several materials was evaluated pyrolytic graphite selected best for tube manufacture. results series tests carried out using V, Mn Pb, typical elements determined furnace, are discussed assess advantages. Performance, regard constant chemical sensitivity, lifetime precision, is indicated. Results obtained sample type known give analytical problems in past used validate findings. Pyrolytic tubes provide improved lifetimes, heating rates power requirements compared existing may be supply units without modification.