Intercomparison of trace element determinations in simulated and real air particulate samples

摘要: Results are presented of an intercomparison study involving twenty-two investigators who collectively used six different analytical techniques. Synthetic dried solution and particulate deposits were prepared and, together with natural aerosol samples, for the study. Analytical techniques utilized by participants wavelength dispersive X-ray spectometry, two energy techniques, atomic absorption spectrometry, emmision spectroscopy neutron activation analysis. showed that is a reliabnle technique multi-element analysis matter collected on filter media. It reported most elemental determinations per man-hour invested provided satisfactory accuracy quantitative determination elements pottassium (Z = 19) above, somewhat larger errors down to aluminium 13). The demonstrated need better understanding practical application particle size corrections lighter elements. non neither well represented nor strongly supported