Isotope ratio mass spectrometry animals

FIGURE 35.13 C18 0 and C16 0 fatty acids formed via hydrolysis of triacylglycerides are ubiquitous archaeological residues indicative of the presence of animal fats and often identified using GC-MS. Natural abimdance isotope ratio mass spectrometry can be used to distingmsh between species via differences in 5 C content ([117] figure reproduced with kind permission). 

Accelerator mass spectrometry has been recently applied to determination of the isotopic ratio. This enables quantification of >1x10 " atoms of "Al, and has enabled the study of environmentally and physiologically relevant Al exposures in plant and animal studies (Flarend and Elmore 1998). 

---