Abstract
Lead isotope ratios in archaeological silver and copper were determined by MC-ICPMS using laser ablation and bulk dissolution without lead purification. Laser ablation results on high-lead metals and bulk solution analyses on all samples agree within error of TIMS suggesting that problems from isobaric interferences and/or mass bias variations due to the presence of matrix elements are insignificant. Inaccurate laser ablation analyses on low-lead copper reflect erroneous mass bias corrections from use of a non-matrix matched standard. However, in most cases, silver and copper are analysable for lead isotopes by bulk dissolution or laser ablation MC-ICPMS with simplified sample preparation.
Originalsprog | Engelsk |
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Tidsskrift | Archaeometry |
Vol/bind | 48 |
Udgave nummer | 1 |
Sider (fra-til) | 45-56 |
Antal sider | 12 |
ISSN | 0003-813X |
DOI | |
Status | Udgivet - 1 feb. 2006 |