Design, operation and analytical characteristics of the filter furnace, a new atomizer for electrothermal atomic absorption spectrometry

摘要: Abstract The design of a filter furnace (FF), new atomizer for electrothermal atomic absorption spectrometry (ETAAS) introduced earlier, has been optimized applications in conventional analytical instrumentation. factors controlling the characteristics FF, i.e. general geometry configuration dosing hole, pyrocoating, spatial distribution shield gas around amount thread, and porosity graphite are examined. improved FF have investigated compared with those tube platform furnaces. determination high- medium-volatility elements is evaluated presence an excess volatile matrix. number advantages: potential to set sampling volume range 10–100 μl while maintaining short drying times any volume; sensitivity levels comparable attainable by stabilized temperature (STPF) technique, without use matrix modifier; significant reductions background chemical interference. speed accuracy method shown various halides, seawater, nitric acid, whole blood other chemicals. main disadvantage that components destroyed at temperatures required low-volatility carbide-forming elements.