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All issues Volume 89 / No 3-4 (May-August 2009) Dairy Sci. Technol., 89 3-4 (2009) 241-256 Full HTML
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Table V.

Relative standard uncertainty of trueness component estimated from CRM recovery analysis.

Element Method wCRM (mg·kg−1) u(wCRM) (mg·kg−1) (mg·kg−1) Sobs_CRM (mg·kg−1) tcal
Na FAAS 4.37 × 103 0.015 × 103 4.37 × 103 0.03 × 103 0.027 0.5
K 17.68 × 103 0.095 × 103 17.05 × 103 0.49 × 103 0.013 1.9
Ca 13.49 × 103 0.05 × 103 14.00 × 103 0.78 × 103 0.023 1.9
Mg 1.263 × 103 0.012 × 103 1.27 × 103 0.032 × 103 0.055 1.1
Zn 49.0 0.3 48.9 1.1 0.016 0.3
Fe 2.32 0.12 2.06 0.27 0.081 0.4
P UV-VIS-MAS 11.10 × 103 0.065 × 103 11.10 × 103 0.33 × 103 0.013 0.5
Cl Potentiometry 9.94 × 103 0.15 × 103 10.02 × 103 0.32 × 103 0.020 0.6
Cu ETAAS 0.602 0.010 0.611 0.015 0.020 1.0
Cu 5.23 0.041 5.00 0.43 0.05 0.92
Cd 0.101 0.004 0.103 0.009 0.064 0.4
Pb 2.002 0.013 2.02 0.18 0.050 0.2

wCRM, certified value of the CRM; u(wCRM), standard uncertainty of the certified value of the CRM; , mean value of CRM replicate analysis (n = 6); Sobs_CRM, standard deviation of CRM replicate analysis (n = 6); , relative standard uncertainty of recovery (equation (8)); significant statistic test [6].