Identification of a disinterred grave by molecular and stable isotope analysis

Confirmation of a potential disinterred grave was sought by GC and GC/MS analyses of lipid extracts of whole soils and white particulate matter. Fatty acid profiles and concentrations determined for three of the soils correlated with the deposition of a large amount of exogenous organic matter, most likely adipocere and/or decomposed body fat. Determination of C_16:0 and C_18:0 fatty acid δ¹³C values by GC/C/IRMS revealed the input to be isotopically distinct from common British domesticated animals, plotting closely to values determined for adipose fat obtained from of a murder victim. By considering the difference between δ¹³C values (Δ¹³C_18:0–16:0) a potential isotopic proxy for identifying the source of adipocere (human) and adipose tissue was proposed.