Projects per year
I graduated from the University of Bristol in 2010 with an MSci in Archaeological Sciences and then continued my studies in the University completing my PhD (Earth Sciences) on strontium diagenesis in archaeological enamel in 2015. I subsequently worked in industry for Thermo-Fisher Scientific as a research and development scientist in mass spectrometry and was part of team that developed the prototype collision cell MC-ICPMS, Proteus, as a collaboration between the Bristol Isotope Group and Thermo-Fisher Scientific Bremen. Since returning to the Bristol I have taken a post which is split between the Organic Geochemistry Unit and the Bristol Isotope Group.
My broad interests are in applying novel and existing geochemical and isotopic techniques to archaeological populations to attempt to understand past environments and lifeways. My PhD research focused on the strontium isotope method used by archaeologists to investigate mobility and the extent to which diagenetic alteration, the uptake of strontium from the burial environment, can affect the results given by this method. I have also undertaken work assessing the potential for the stable strontium isotope ratio (δ88Sr) to investigate ancient diets.
I also have a keen interest in the analytical techniques used to measure the various geochemical and isotopic proxies that are utilised in the discipline and a special interest in novel instrumentation and development of new analytical methods.
During my PhD I used TIMS and (MC)-ICPMS for strontium concentration and isotope ratio determinations on teeth and bones both by solution and laser ablation and also developed an improved method for determining strontium isotope ratios by laser ablation. Following my PhD I was part of the research and development team that helped to construct the “Proteus” collision cell MC-ICPMS which combines a quadrupole mass spectrometer and collision cell with a sector field multi-collector mass spectrometer.
In my current post with the Organic Geochemistry Unit I am continuing to investigate ancient human lifeways and, specifically, subsistence practices, using light isotope techniques. This will focus on compound specific δ13C and δ15N on individual amino-acids using LC-IRMS and GC-C-IRMS. The aim of the project is to calibrate the Δ13CGly-Phe proxy and investigate δ15N fractionation with trophic level using a set of pig tissues from a modern feeding experiment.
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1/10/22 → 30/09/23
Precise and Accurate Mass-independent Chromium Isotope Measurement by Total Evaporation Mode on Thermal Ionization Mass Spectrometry (TE-TIMS) at 200 ng LevelXu, L. J., Zhu, K., Man, Q. R., Lewis, J., Ma, H. & Liu, S. A., 2023, In: Atomic Spectroscopy. 44, 3, p. 142-152 11 p.
Research output: Contribution to journal › Article (Academic Journal) › peer-reviewOpen Access
Multi-proxy investigation of the post-evaporitic succession of the Piedmont Basin (Pollenzo section, NW Italy): a new piece in the Stage 3 puzzle of the Messinian Salinity CrisisAndreetto, F., Mancini, A. M., Flecker, R. M., R, G., Lewis, J., Lozar, F., Natalicchio, M., Sangiorgi, F., Stoica, M., Dela Pierre, F. & Krijgsman, W., 15 May 2022, In: Palaeogeography Palaeoclimatology Palaeoecology. 594, 110961.
Research output: Contribution to journal › Article (Academic Journal) › peer-reviewOpen AccessFile5 Citations (Scopus)7 Downloads (Pure)
In situ Rb-Sr dating by collision cell, multicollection inductively-coupled plasma mass-spectrometry with pre-cell mass-filter, (CC-MC-ICPMS/MS)Bevan, D., Coath, C. D., Lewis, J., Schwieters, J., Lloyd, N., Craig, G., Wehrs, H. & Elliott, T. R., 1 Apr 2021, (E-pub ahead of print) In: Journal of Analytical Atomic Spectrometry. 36, 5, p. 917-931 15 p.
Research output: Contribution to journal › Article (Academic Journal) › peer-reviewOpen AccessFile25 Citations (Scopus)63 Downloads (Pure)