Principle: Ion chromatography with visible detection (IC-VIS)
Minimum reported value: 0,04 µg
Remarks: The analytical results are expressed as total water-soluble and water-insoluble chromium VI, see these substances datasheets for the CVa. See the Info-Labo 2014-06 to compare to the regulation. Surface tests for chromates can be carried out, and the required equipment (kit #2625) is available at the IRSST. Extraction delay of 8 days for welding fumes and 10 days for the other processes following the sampling date. Ship all samples by rapid courier within a period not exceeding 24 hours after sampling. Any substance that produces a response on the detector at 540 nm and that has a retention time similar to Cr VI is a potential interference.

IRSST. Détermination des composés inorganiques du chrome hexavalent hydrosolubles et hydroinsolubles dans l'air des lieux de travail, Méthodes analytiques, méthode 365, Montréal, IRSST, 2009, 17 pages.