Electrothermal Atomizers: entire sample atomized short time(2000-3000 C) sample spends up to 1 s in analysis volume .superior sensitivity (10-10-10-13g analyte) less reproducible (5-10 % Graphite furnace ETA(Fig 9-6) Graphite Internal gas flow furnace indow To Light beam ring External gas flow☐ Graphite tube Platform 6 external Ar gas prevents tube destruction internal Ar gas circulates gaseous analyte CEM 333 page 9.4Electrothermal Atomizers: • entire sample atomized short time (2000-3000 °C) • sample spends up to 1 s in analysis volume • superior sensitivity (10-10-10-13 g analyte) • less reproducible (5-10 %) Graphite furnace ETA (Fig 9-6) • external Ar gas prevents tube destruction • internal Ar gas circulates gaseous analyte CEM 333 page 9.4