Date of Award

Spring 5-2025

Document Type

Thesis

Degree Name

Master of Science (MS)

Department/Program

Forensic Science

Language

English

First Advisor or Mentor

Marta Concheiro-Guisan

Second Reader

Ana Pego

Third Advisor

Eduardo Geraldo de Campos

Abstract

Archaeo-toxicology is a new area of science that is gaining interest for its involvement in the analysis of archaeological materials by toxicological means. Research in this field has been predominantly conducted on skeletonized remains to investigate heavy metal exposure. However, limited studies have examined organic drugs, such as alkaloids, within bone. The goal of our study was to develop and validate an analytical method for the determination of morphine, codeine, thebaine, noscapine, papaverine, ephedrine, atropine, and scopolamine in bones by liquid chromatography-tandem mass spectrometry (LC-MS/MS). This procedure will be used on authentic human bones from an archeological site in Menorca, Spain, dating back to 1,000 BCE, where the use of Ephedra, Atropa belladonna, and Papaver somniferum was documented. Animal bones (chicken and rib bones) were smashed in a mortar and pestle before incubation in methanol for 72h at 50°C. The tubes were centrifuged, and the supernatant was collected before evaporation. The extracts were centrifuged, and the supernatant was placed into filter vials before being injected into the LC-MS/MS. The mass spectrometer was operated in electrospray positive mode, and data were acquired in multiple reaction monitoring mode. The linearity ranged from 1-100 ng/g with acceptable bias (±20%) and imprecision (< 20%). All alkaloids, except thebaine, experienced ion suppression (-52% to -66%) while thebaine experienced ion enhancement (56%). Morphine was qualitatively analyzed as it did not pass validation. This method will have to be adjusted to attain approvable results for morphine before it can be applied to the authentic bones.

Available for download on Wednesday, May 12, 2027

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