TIMS analysis of neodymium isotopes in human tooth enamel using 1013 Ω amplifiers

E. Plomp, I. C.C. Von Holstein, J. M. Koornneef, R. J. Smeets, L. Font, J. A. Baart, T. Forouzanfar, G. R. Davies

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

Human provenance studies employing isotope analysis are essential in archaeological and forensic sciences but current applications provide limited spatial resolution. This study reports on the potential of neodymium isotope composition (143Nd/144Nd) to improve human provenancing capabilities. Human tissues contain very low (<0.1 ppm) neodymium concentrations, such that previous composition analysis was not possible. Additionally, Nd composition analysis in human enamel is hindered by Ca in the sample matrix. A modified Nd chromatographic separation technique is reported here, which removes large Ca quantities and accommodates large sample sizes (300-1000 mg). Verification of the modified chromatographic procedure was achieved using an internal synthetic tooth standard. These advancements allow for high precision Nd isotope composition analysis on ∼500 mg of tooth enamel, or >100 pg of Nd, by thermal ionization mass spectrometry (TIMS) using 1013 Ω resistors. Neodymium concentrations in enamel from third molars of modern Dutch residents range between 0.1-21.0 ppb (n = 23). The 143Nd/144Nd values for Amsterdam (0.51204-0.51259, n = 12) and Rotterdam (0.51187-0.51239, n = 8) are significantly different (P value = 0.02), demonstrating the potential of neodymium isotope composition to provide improved spatial resolution. Further assessment of Nd composition in enamel of residents from other geological contexts is required to better understand the human provenance capabilities of neodymium.

Original languageEnglish
Pages (from-to)2391-2400
Number of pages10
JournalJournal of Analytical Atomic Spectrometry
Volume32
Issue number12
DOIs
Publication statusPublished - 1 Dec 2017

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Tooth enamel
Neodymium
Isotopes
Ionization
Mass spectrometry
Enamels
Chemical analysis
Resistors
Tissue
Hot Temperature

Cite this

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title = "TIMS analysis of neodymium isotopes in human tooth enamel using 1013 Ω amplifiers",
abstract = "Human provenance studies employing isotope analysis are essential in archaeological and forensic sciences but current applications provide limited spatial resolution. This study reports on the potential of neodymium isotope composition (143Nd/144Nd) to improve human provenancing capabilities. Human tissues contain very low (<0.1 ppm) neodymium concentrations, such that previous composition analysis was not possible. Additionally, Nd composition analysis in human enamel is hindered by Ca in the sample matrix. A modified Nd chromatographic separation technique is reported here, which removes large Ca quantities and accommodates large sample sizes (300-1000 mg). Verification of the modified chromatographic procedure was achieved using an internal synthetic tooth standard. These advancements allow for high precision Nd isotope composition analysis on ∼500 mg of tooth enamel, or >100 pg of Nd, by thermal ionization mass spectrometry (TIMS) using 1013 Ω resistors. Neodymium concentrations in enamel from third molars of modern Dutch residents range between 0.1-21.0 ppb (n = 23). The 143Nd/144Nd values for Amsterdam (0.51204-0.51259, n = 12) and Rotterdam (0.51187-0.51239, n = 8) are significantly different (P value = 0.02), demonstrating the potential of neodymium isotope composition to provide improved spatial resolution. Further assessment of Nd composition in enamel of residents from other geological contexts is required to better understand the human provenance capabilities of neodymium.",
author = "E. Plomp and {Von Holstein}, {I. C.C.} and Koornneef, {J. M.} and Smeets, {R. J.} and L. Font and Baart, {J. A.} and T. Forouzanfar and Davies, {G. R.}",
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TIMS analysis of neodymium isotopes in human tooth enamel using 1013 Ω amplifiers. / Plomp, E.; Von Holstein, I. C.C.; Koornneef, J. M.; Smeets, R. J.; Font, L.; Baart, J. A.; Forouzanfar, T.; Davies, G. R.

In: Journal of Analytical Atomic Spectrometry, Vol. 32, No. 12, 01.12.2017, p. 2391-2400.

Research output: Contribution to JournalArticleAcademicpeer-review

TY - JOUR

T1 - TIMS analysis of neodymium isotopes in human tooth enamel using 1013 Ω amplifiers

AU - Plomp, E.

AU - Von Holstein, I. C.C.

AU - Koornneef, J. M.

AU - Smeets, R. J.

AU - Font, L.

AU - Baart, J. A.

AU - Forouzanfar, T.

AU - Davies, G. R.

PY - 2017/12/1

Y1 - 2017/12/1

N2 - Human provenance studies employing isotope analysis are essential in archaeological and forensic sciences but current applications provide limited spatial resolution. This study reports on the potential of neodymium isotope composition (143Nd/144Nd) to improve human provenancing capabilities. Human tissues contain very low (<0.1 ppm) neodymium concentrations, such that previous composition analysis was not possible. Additionally, Nd composition analysis in human enamel is hindered by Ca in the sample matrix. A modified Nd chromatographic separation technique is reported here, which removes large Ca quantities and accommodates large sample sizes (300-1000 mg). Verification of the modified chromatographic procedure was achieved using an internal synthetic tooth standard. These advancements allow for high precision Nd isotope composition analysis on ∼500 mg of tooth enamel, or >100 pg of Nd, by thermal ionization mass spectrometry (TIMS) using 1013 Ω resistors. Neodymium concentrations in enamel from third molars of modern Dutch residents range between 0.1-21.0 ppb (n = 23). The 143Nd/144Nd values for Amsterdam (0.51204-0.51259, n = 12) and Rotterdam (0.51187-0.51239, n = 8) are significantly different (P value = 0.02), demonstrating the potential of neodymium isotope composition to provide improved spatial resolution. Further assessment of Nd composition in enamel of residents from other geological contexts is required to better understand the human provenance capabilities of neodymium.

AB - Human provenance studies employing isotope analysis are essential in archaeological and forensic sciences but current applications provide limited spatial resolution. This study reports on the potential of neodymium isotope composition (143Nd/144Nd) to improve human provenancing capabilities. Human tissues contain very low (<0.1 ppm) neodymium concentrations, such that previous composition analysis was not possible. Additionally, Nd composition analysis in human enamel is hindered by Ca in the sample matrix. A modified Nd chromatographic separation technique is reported here, which removes large Ca quantities and accommodates large sample sizes (300-1000 mg). Verification of the modified chromatographic procedure was achieved using an internal synthetic tooth standard. These advancements allow for high precision Nd isotope composition analysis on ∼500 mg of tooth enamel, or >100 pg of Nd, by thermal ionization mass spectrometry (TIMS) using 1013 Ω resistors. Neodymium concentrations in enamel from third molars of modern Dutch residents range between 0.1-21.0 ppb (n = 23). The 143Nd/144Nd values for Amsterdam (0.51204-0.51259, n = 12) and Rotterdam (0.51187-0.51239, n = 8) are significantly different (P value = 0.02), demonstrating the potential of neodymium isotope composition to provide improved spatial resolution. Further assessment of Nd composition in enamel of residents from other geological contexts is required to better understand the human provenance capabilities of neodymium.

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M3 - Article

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JO - Journal of Analytical Atomic Spectrometry

JF - Journal of Analytical Atomic Spectrometry

SN - 0267-9477

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