Technical guidelines on testing the migration of primary aromatic ...

Samples) the concentration (C) of the PAA of interest in the test sample is given by:μg/lPAAμ g/kg =dwhere μg/l PAA is the value obtained from the chromatogram for the individual amineand d is the density of the sample solution.Results are expressed as μg/dm 2 to the nearest 0.1 μg/dm 2 .Calculate the measurement uncertainty (MU) for the test parameter(s). For theindividual PAAs the values are givenPAA MU (%)2,4-TDA 0.0582,6-TDA 0.089ANL 0.0374,4'-MDA 0.060o-T 0.0353,3'-DMB 0.097Ensure compliance with any legislation regarding measurement uncertainty whichmay govern the specific test parameters.If the measurement uncertainty is to be applied to the analytical result, report it in thefollowing format:Result 100±10**The reported uncertainty is an expanded uncertainty calculated using a coveragefactor of 2 which gives a level of confidence of approximately 95%.3.4 Precision of the data3.4.1 Limit of detection and quantificationthe limit of detection for the individual PAAs is given below:PAAL.O.D. (ppb)2,4-TDA 0.192,6-TDA 0.13ANL 0.044,4'-MDA 0.08o-T 0.093,3'-DMB 0.25Limit of quantitation–the limit of quantitation for the individual PAAs is given below:PAAL.O.Q. (ppb)2,4-TDA 0.372,6-TDA 0.26ANL 0.084,4'-MDA 0.17o-T 0.183,3'-DMB 0.4938