ROUND-ROBIN TEST FOR MEASURING POLYCHLORI NATED DIBENZODIOXINS AND DIBENZOFURANS IN WORKPLACE AIR

Six simultaneous samplings were carried out in an aluminium recycling plant to validate a method for determining the concentration of polych lorinated dibenzodioxines and -furans (PCDD/PCDF) in workplace air. Th e sampling device was developed in the ''Berufsgenossenschaftliches In stitut fur Arbeitssicherheit'' (BIA) and is able to sample particulate PCDD/PCDF using a glass fiber filter according to the total dust defi nition and filter-passing PCDD/PCDF using a layer of polyurethane foam . The samples were analysed in six different laboratories, which were allowed to use different analytical methods. The relative standard dev iation for the results is 25%. This satisfies the requirements of DIN EN 482 for the performance of procedures for measuring chemical agents .