FREQUENCY-MODULATED SIMULTANEOUS MULTIELEMENT ATOMIC-ABSORPTION SPECTROMETRY USING ELECTROTHERMAL ATOMIZER AND DEUTERIUM BACKGROUND CORRECTION

Characteristic data of the frequency-modulated simultaneous multieleme nt atomic absorption spectrometry (FREMSAAS) using electrothermal atom izer with deuterium background correction, have been determined. The d ata obtained have been processed by using several statistical tests re commended for quality control purposes. The instrumentation has been p resented as well as procedures of separating elements into measure gro ups and fixing of variable conditions. Detection limits, characteristi c masses and working ranges have been given for the eleven elements ex amined. The data have been in good agreement to results obtained with conventional one-channel AAS instruments. The eleven elements have bee n simultaneously determined in a standard reference material (SRM) and all results are compatible with a 95% certainty with the certified va lues. FREMSAAS has been applied to a real sample.