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Analytical and Bioanalytical Chemistry

, Volume 402, Issue 2, pp 861–869 | Cite as

Elemental fingerprint profile of beer samples constructed using 14 elements determined by inductively coupled plasma–mass spectrometry (ICP-MS): multivariation analysis and potential application to forensic sample comparison

  • Nazia Mahmood
  • Nicolas Petraco
  • Yi HeEmail author
Original Paper

Abstract

Determination of elemental fingerprint profile of 40 commercial beer samples was performed using inductively coupled plasma–mass spectrometry combined with principal component analysis and receiver operating characteristic (ROC) analysis. Fourteen trace elements, 51V, 52Cr, 59Co, 60Ni, 75As, 82Se, 95Mo, 111Cd, 115In, 121Sb, 133Cs, 208Pb, 209Bi, and 238U, were monitored. All 40 beer samples are distinguishable by using the proposed method. ROC analysis showed that individual beer samples can be correctly identified via the magnitude of its correlation coefficient with respect to the other beers with low false positive rate. The obtained results suggested that the elemental fingerprint technique is feasible for sample differentiation and comparison.

Keywords

Elemental fingerprint Inductively coupled plasma-mass spectrometry (ICP-MS) Beer Principal component analysis (PCA) Receiver operating characteristic (ROC) 

Notes

Acknowledgment

A U.S. Department of Education Title V grant for institutional development provided to John Jay College and the PRISM program at John Jay College was gratefully acknowledged.

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Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  1. 1.Department of Sciences, John Jay College of Criminal JusticeThe City University of New YorkNew YorkUSA

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