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Team TFS
Team TFS
Environmental Forensics and Human Health Lab., Environmental Engineering Research Centre, Queen’s University Belfast, Belfast BT9 5AG, UK
Rapid Communications in Mass Spectrometry (2007), V21, pp3279–3285, doi: 10.1002/rcm.3209
Stable 2H isotope analysis of modern-day human hair and nails can aid forensic human identification
Isla Fraser and Wolfram Meier-Augenstein
Continuous-flow isotope ratio mass spectrometry (CF-IRMS) was used to compare 2H isotopic composition at natural abundance level of human scalp hair and fingernail samples collected from subjects worldwide with interpolated d2H precipitation values at corresponding locations. The results showed a strong correlation between d2H values of meteoric water a nd hair (r2 = 0.86), while the corresponding correlation for nails was not as strong (r2 = 0.6). Offsets of -180 permil and -127 permil were observed when calculating solutions of the linear regression analyses for d2H vs. d18O correlation plots of hair and nail samples, respectively. Compared with the +10 permil offset of the global meteoric water line equation these findings suggested that d18O data from hair and nail would be of limited diagnostic value. The results of this pilot study provide for the first time tentative correlations of 2H isotopic composition of human hair and nails with local water.
  • IRMS
  • Delta Plus XP
  • Hair
  • 2H and 18O
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