COMPARATIVE-STUDY OF MULTIELEMENT DETERMINATION USING INDUCTIVELY-COUPLED PLASMA-MASS SPECTROMETRY, TOTAL-REFLECTION X-RAY-FLUORESCENCE SPECTROMETRY AND NEUTRON-ACTIVATION ANALYSIS

The analytical capabilities of inductively coupled plasma mass spectrometry, total reflection X-ray fluorescence spectrometry and neutron activation analysis were compared. The data originated from the parallel analyses of spinach, cabbage and domestic sludge samples, which were used in inter-laboratory tests to monitor precision and accuracy. The determined concentrations range from 40 mg g-1 to 20 ng g-1 and the analytical errors from 2 to 30%. The extensive results and the reliability of the techniques are discussed.