Assessing laser ablation multi-collector inductively coupled plasma mass spectrometry as a tool to study archaeological and modern human mobility through strontium isotope analyses of tooth enamel

Abstract To evaluate the possibility of obtaining detailed individual mobility data from archaeological teeth, strontium isotope ratios on 28 human teeth three separate Early-Mid Holocene, Swedish, foraging contexts (Norje Sunnansund, Skateholm and Västerbjers) were analysed through laser ablation. The teeth/individuals have previously been using traditional bulk sampled thermal ionisation mass spectrometry. validate conclusions regarding a tooth modern man with known background was also analysed. result shows that all display less than 0.4% discrepancy between mean values ablation profiles published 25 (89%) 0.2% discrepancy. By calculating linear polynomial trendlines for each ablated tooth, it possible to illustrate strong correlation transition pattern measurements when following chronological sequence tip cervix. Such correlations not reproduced randomized. analyses show chronologically sequenced fit local bioavailable regions, do fluctuate extremes their are caused by end-member mixing. This indicates an increasing resolution reducing ratio averaging time minimizing sampling area. results suggest incorporation in can be measured ordinal scale, traceable order enamel mineralization cervix at equal distance surface. Micro-sampling is considered valid method assess prehistoric, but modern, mobility; technology increases amount information obtained single while rendering minimal damage studied specimen.