Comments on results of the SS1 Stainless Steel measurements

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Comments on results of the SS1 Stainless Steel
measurements

• Em. Cincu, I. Manea, O. Sima

IWIRAD 2005
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Purpose

• To present the results obtained by NAA in
  comparison with reference values obtained by
  other methods
• gt graphs of mean values
• gt Z scores
• NAA results laboratory codes 2 5
• Reference results code 1

IWIRAD 2005
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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
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Mn concentration ()
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Cr concentration ()
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Mo concentration ()
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Ni concentration ()
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Fe concentration ()
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Cu concentration ()
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Co concentration ()
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V concentration ()
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W concentration ()
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Sb concentration ()
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As concentration ()
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Z score

• The score displayed is defined by

x NAA mean value ref mean value obtained by
other methods s standard deviation of the NAA
data
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Mn - Z score
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Cr - Z score (problems!)
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Mo - Z score
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Ni - Z score
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Fe - Z score
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Cu - Z score
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Co - Z score
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V - Z score
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W - Z score (problems!)
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Sb - Z score (problems!)
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As - Z score
IWIRAD 2005