QUALITATSSICHERUNG VON MESSVERFAHREN DURCH VERGLEICHSMESSUNGEN : CHROM (VI)-VERBINDUNGEN IN SCHWEISSRAUCHEN

The official German measuring procedure for chromium (VI)-species in workplace atmospheres and a novel procedure developed for ambient air measurement were compared in an interlaboratory test. For this purpose a special measuring chamber was developed, where real welding procedures could be performed. Both analytical procedures lead to comparable results for two different welding procedures