Comparison of secondary-ion mass spectrometry and compleximetric titration for the determination of leaching of magnesium from chrysotile asbestos

Abstract The dissolution of chrysotile asbestos in 0.05 M oxalic acid is evaluated by secondary-ion mass spectrometry and by titration of magnesium with EDTA. The results of the two methods agree closely; thus matrix effects in the utilization of sputtering depth profiles of the mass spectrometric determination do not influence the final results.