Sample-loss mechanism in a constant-temperature graphite furnace

摘要: A constant temperature furnace, used for the study of sample loss, has an advantage essentially over duration observation pulse. In addition, because enclosed nature furnace and absence rapid heating graphite tube, convection loss vapor is small. It been found that one group elements closely follows a simple diffusional law, while other considerable deviation observed. Deviations are linked to redepositing in heater tube those which form compounds with carbon at elevated temperatures. case gas phase diffusion controlled new procedure expansion useful analytical range proposed.