A comparison is made between the calculated and experimental values obtained for the characteristic mass, m,, with a tantalum-foil platform in a pyrolytic graphite coated graphite tube, using different chemical modifiers (Pd 0.5 mg ml-l, NaH,PO, 10 mg ml-I and ascorbic acid 10 mg ml-l), and various solutions of reference materials of environmental samples. All measurements of m, were performed on an Hitachi Model 28000 d.c. magnet, Zeeman spectrometer and a Beijing Second Optical Instrument Factory Model WFX-1 G2, as. magnet, Zeeman spectrometer. Theoretical calculations of m, for Cd at atomization temperatures ranging from 1000 to 2200 K, made every 100 K, were based on the calculation formula and fundamental parameters proposed by L'vov et al. Quantitative analysis data for Cd in sea-water and in solutions of reference materials (pork liver, wheat powder, peach leaf, tea leaf, tea tree leaf, cabbage, water sediments, coal fly ash and geological samples) by standardless analysis are presented.
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