Human tooth enamel as a record of the comparative lead exposure of prehistoric and modern people

Budd, P.; Montgomery, J.; Evans, J.; Barreiro, B.

Abstract

There is a considerable body of evidence to support the contention that the atmospheric Pb burden is now considerably greater than it was in the remote past. However, as there are a diversity of potential environmental pathways leading to Pb ingestion, it is not clear how atmospheric Pb levels relate to human exposure. It is necessary to establish a baseline for human exposure to Pb from natural sources in the pre-metallurgical past, with which contemporary exposure can be compared. This paper addresses this issue by comparing the Pb content of human dental enamel — an established proxy for Pb exposure — from modern and archaeological, pre-metallurgical individuals using thermal and plasma ionisation mass spectrometry. It is shown that mean Neolithic enamel Pb contents are approximately 0.31±0.04 ppm. These values are only one order of magnitude lower than previously reported data for the same tissues for modern juveniles, despite an established 400-fold increase in the atmospheric Pb burden. The results suggest that ‘natural’ exposure to Pb in food and water may have been higher than previously thought, and that the link between atmospheric Pb and human exposure warrants further investigation.

Citation

Budd, P., Montgomery, J., Evans, J., & Barreiro, B. (2000). Human tooth enamel as a record of the comparative lead exposure of prehistoric and modern people. Science of the Total Environment, 263(1-3), 1-10. https://doi.org/10.1016/s0048-9697%2800%2900604-5

• Journal Article Type: Article
• Publication Date: Dec 1, 2000
• Deposit Date: Jul 13, 2011
• Publicly Available Date: Jan 17, 2014
• Journal: Science of the Total Environment
• Print ISSN: 0048-9697
• Electronic ISSN: 1879-1026
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 263
• Issue: 1-3
• Pages: 1-10
• DOI: https://doi.org/10.1016/s0048-9697%2800%2900604-5
• Keywords: Human dental enamel, Teeth, Lead, Archaeological, Human exposure, Isotope dilution-thermal ionisation mass spectrometry, Pimms, Human Teeth, Archaeological bone, Peat bog, Ancient, Children, Population, Diagenesis, Skeletons, Isotopes, Trace.
• Public URL: https://durham-repository.worktribe.com/output/1529810