How many chemicals were analyzed for each material?
GC/MS chromatographs from an emission test were analyzed to identify and quantify “Target” VOCs (see Question 11), “abundant” VOCs (see Question 12) and TVOC (see Question 13). In addition, HPLC analysis of many of the tests was performed to determine the emission rates of carbonyl compounds (including formaldehyde) from many of the materials tested. DNPH cartridge samples were collected at 24 hour intervals for the limited test specimens reported in the database (CRP7, CRP7a, CT1, CT2, HWF1, LAM1, LAM2, LAM3, LIN1, LIN2, MDF2, VWB1, OSB4, OSB5a, OSB5b, OSB5c, OSB5d, OSB6a, OSB6b, OSB7a and OSB7b). For many tests, DNPH sampling was not performed at sufficient frequency to enable accurate calculation of emission coefficients. With the exception of the tests noted above, the absence of formaldehyde/carbonyl compound emission data does not necessarily mean that these compounds were not emitted from the materials.
