INTERLABORATORY COMPARISON STUDY ON THE ANALYSIS OF LEAD AND CADMIUM IN BLOOD

In 1991, the Institute of Occupational Medicine in Lodz organized prog ramme of interlaboratory control system For laboratories routinely per forming blood lead and cadmium determination with use of atomic absorp tion spectrometry. At present twenty laboratories from Poland particip ate in our programme. At the initial stage of carrying this programme only about 50% of the total number of laboratories was gettingt correc t results of lead and cadmium determination. Results after eight quali ty control runs revealed significant improvement of blood cadmium dete rminations, specially at low concentrations i.e. about 36 nmol l(-1) t he number of laboratories with correct results increased up to 100%.