Spray deposition versus single-drop deposition for calibration of an electrostatic accumulation furnace for electrothermal atomization atomic absorption spectrometry

Spray deposition, e.g., deposition by electrostatic capture of aerosol droplets (aerodynamic diam. of 1-2 m) generated from a std. soln. of the analyte is proposed for the calibration of the electrostatic accumulation furnace for electrothermal atomization at. absorption spectrometric anal. Deposition of the analyte can be achieved with a relative std. deviation of .apprx.2%. The spray deposition mode was insensitive to the aging and surface conditions of the furnace but not to the nature of the furnace material. The different behaviors obsd. for different materials are explained in terms of different atom loss mechanisms.