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Comments on results of the SS1 Stainless Steel measurements. Em. Cincu, I. Manea, O. Sima. IWIRAD 2005. Purpose :. To present the results obtained by NAA in comparison with “reference” values obtained by other methods => graphs of mean values => Z scores
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Comments on results of the SS1 Stainless Steel measurements Em. Cincu, I. Manea, O. Sima IWIRAD 2005
Purpose: • To present the results obtained by NAA in comparison with “reference” values obtained by other methods => graphs of mean values => Z scores • NAA results: laboratory codes 2 – 5 • Reference results: code 1 IWIRAD 2005
Graphs of mean values • NAA results: mean values with error bars corresponding to the reported uncertainty • Reference results: mean values with error bars corresponding to the standard deviation • 8 elements reported by all NAA participants • 1 element reported only by 3 NAA labs • 2 elements reported only by 2 NAA labs • 2 elements reported only by 1 NAA lab, which are missing from the reference data. IWIRAD 2005
Mn concentration (%) IWIRAD 2005
Cr concentration (%) IWIRAD 2005
Mo concentration (%) IWIRAD2005
Ni concentration (%) IWIRAD 2005
Fe concentration (%) IWIRAD 2005
Cu concentration (%) IWIRAD 2005
Co concentration (%) IWIRAD 2005
V concentration (%) IWIRAD 2005
W concentration (%) IWIRAD 2005
Sb concentration (%) IWIRAD 2005
As concentration (%) IWIRAD 2005
Z score • The score displayed is defined by x = NAA mean value ref = mean value obtained by other methods s = standard deviation oftheNAA data IWIRAD 2005
Mn - Z score IWIRAD 2005
Cr - Z score (problems!) IWIRAD 2005
Mo - Z score IWIRAD 2005
Ni - Z score IWIRAD 2005
Fe - Z score IWIRAD 2005
Cu - Z score IWIRAD 2005
Co - Z score IWIRAD 2005
V - Z score IWIRAD 2005
W - Z score (problems!) IWIRAD 2005
Sb - Z score (problems!) IWIRAD 2005
As - Z score IWIRAD 2005