Simultaneous lead isotope ratio and gold-lead-bismuth concentration analysis of silver by laser ablation MC-ICP-MS
Simultaneous lead isotope ratio and gold-lead-bismuth concentration analysis of silver by laser ablation MC-ICP-MS
A new approach is presented for the simultaneous analysis of lead isotope ratios and gold, lead, and bismuth concentrations in metallic silver using nanosecond laser ablation multi-collector inductively-coupled plasma mass spectrometry (LA-MC-ICP-MS). Corrections for both isotope and concentration analyses are performed using an in-house matrix matched silver reference material RM3834. Accuracy and external reproducibility are demonstrated by repeat analyses of a further seven silver reference materials all characterised by solution (MC)-ICP-MS approaches. Typical internal precisions, expressed as two relative standard errors (S.E.) of the mean of the cycles comprising one analysis, are <0.5% for
206Pb/
204Pb,
207Pb/
204Pb and
208Pb/
204Pb, and <0.03% for
207Pb/
206Pb and
208Pb/
206Pb. External reproducibilities, based on repeat analyses over a 10 month period and expressed as two relative standard deviations (S.D.) of the mean, are <0.4% for
206Pb/
204Pb,
207Pb/
204Pb and
208Pb/
204Pb and <0.2% for
207Pb/
206Pb and
208Pb/
206Pb. Internal precisions and external reproducibilities of gold, lead and bismuth concentration analyses are typically <25%. Data are consistent with solution-based approaches. Methods are further demonstrated through analyses of a set of Islamic silver dirhams from the mint of al-Muhammadiyya, highlighting their applicability to geochemical studies of archaeological artefacts.
Dirhams, Laser ablation, Lead isotopes, MC-ICP-MS, Silver
Standish, Christopher
0b996271-da5d-4c4f-9e05-a2ec90e8561d
Merkel, Stephen
9283f23c-de94-4c2e-8e80-748a0c0bc82b
Hsieh, Yu-Te
e0d5c707-4d2f-42b9-8e1b-7592856c8af6
Kershaw, Jane
a3e5043e-9236-45be-a23e-3d00eaa3a66e
January 2021
Standish, Christopher
0b996271-da5d-4c4f-9e05-a2ec90e8561d
Merkel, Stephen
9283f23c-de94-4c2e-8e80-748a0c0bc82b
Hsieh, Yu-Te
e0d5c707-4d2f-42b9-8e1b-7592856c8af6
Kershaw, Jane
a3e5043e-9236-45be-a23e-3d00eaa3a66e
Standish, Christopher, Merkel, Stephen, Hsieh, Yu-Te and Kershaw, Jane
(2021)
Simultaneous lead isotope ratio and gold-lead-bismuth concentration analysis of silver by laser ablation MC-ICP-MS.
Journal of Archaeological Science, 125, [105299].
(doi:10.1016/j.jas.2020.105299).
Abstract
A new approach is presented for the simultaneous analysis of lead isotope ratios and gold, lead, and bismuth concentrations in metallic silver using nanosecond laser ablation multi-collector inductively-coupled plasma mass spectrometry (LA-MC-ICP-MS). Corrections for both isotope and concentration analyses are performed using an in-house matrix matched silver reference material RM3834. Accuracy and external reproducibility are demonstrated by repeat analyses of a further seven silver reference materials all characterised by solution (MC)-ICP-MS approaches. Typical internal precisions, expressed as two relative standard errors (S.E.) of the mean of the cycles comprising one analysis, are <0.5% for
206Pb/
204Pb,
207Pb/
204Pb and
208Pb/
204Pb, and <0.03% for
207Pb/
206Pb and
208Pb/
206Pb. External reproducibilities, based on repeat analyses over a 10 month period and expressed as two relative standard deviations (S.D.) of the mean, are <0.4% for
206Pb/
204Pb,
207Pb/
204Pb and
208Pb/
204Pb and <0.2% for
207Pb/
206Pb and
208Pb/
206Pb. Internal precisions and external reproducibilities of gold, lead and bismuth concentration analyses are typically <25%. Data are consistent with solution-based approaches. Methods are further demonstrated through analyses of a set of Islamic silver dirhams from the mint of al-Muhammadiyya, highlighting their applicability to geochemical studies of archaeological artefacts.
Text
Standish et al 2021 Silver LA-MC-ICP-MS
- Version of Record
More information
Accepted/In Press date: 19 November 2020
e-pub ahead of print date: 3 December 2020
Published date: January 2021
Additional Information:
Funding Information:
Thanks to Adi Popescu and Martin Allen of the Fitzwilliam Museum for facilitating access to the dirhams, and to Andy Milton for laboratory assistance at the University of Southampton. We would also like to thank Michael Bode, Michael Prange and Georg Wange for use of the laboratory facilities at the Deutsches Bergbau-Museum, Bochum, and two anonymous reviewers and the editor for their detailed comments on an earlier version of this manuscript. This work was funded by an ERC Starting Grant awarded to J.K. (Action number 802349).
Funding Information:
Thanks to Adi Popescu and Martin Allen of the Fitzwilliam Museum for facilitating access to the dirhams, and to Andy Milton for laboratory assistance at the University of Southampton. We would also like to thank Michael Bode, Michael Prange and Georg Wange for use of the laboratory facilities at the Deutsches Bergbau-Museum, Bochum, and two anonymous reviewers and the editor for their detailed comments on an earlier version of this manuscript. This work was funded by an ERC Starting Grant awarded to J.K. (Action number 802349).
Publisher Copyright:
© 2020
Keywords:
Dirhams, Laser ablation, Lead isotopes, MC-ICP-MS, Silver
Identifiers
Local EPrints ID: 445637
URI: http://eprints.soton.ac.uk/id/eprint/445637
ISSN: 0305-4403
PURE UUID: aaec4804-f469-4f82-ab98-1a434f8c0959
Catalogue record
Date deposited: 05 Jan 2021 17:30
Last modified: 17 Mar 2024 03:35
Export record
Altmetrics
Contributors
Author:
Stephen Merkel
Author:
Yu-Te Hsieh
Author:
Jane Kershaw
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics
