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

Abstract

This is the first comprehensive study of143Nd/144Nd composition of human tissues, exploring its potential for human provenancing.

Interpreting Past Human Mobility Patterns: A Model

“…The current boom in studies of mobility combined with recent scientific advances in creating detailed timeline investigations of single individuals (Font et al, 2012;Tipple et al, 2013;Eerkens et al, 2014;Knipper et al, 2014;Frei et al, 2015aFrei et al, , 2015bFrei et al, , 2017Plomp et al, 2017) has created a new way of layering new questions regarding social dynamics. Here, we propose a simple model of different types of mobility that this new corpus of data appears to suggest with the aim of providing new tools with which we can discuss past mobility more in detail.…”

Isotopic analysis of sub‐nanogram neodymium loads using new ATONA™ amplifiers

“…2,3,33 The ATONA™ amplifier technology has the potential to provide higher precision results for these types of studies, allowing more nuanced conclusions to be reached about geologic systems with lower age or 143 Nd/ 144 Nd variability. Furthermore, archaeologists are using ultratrace 143 Nd/ 144 Nd measurements in dental enamel which contains very little Nd for provenance studies, 34,35 and for "non-invasive"…”

“…conclusions to be reached about geologic systems with lower age or 143 Nd/ 144 Nd variability. Furthermore, archaeologists are using ultratrace143 Nd/ 144 Nd measurements in dental enamel which contains very little Nd for provenance studies,34,35 and for "non-invasive" 143 Nd/ 144 Nd measurements of precious artifacts for which traditional destructive analyses is not a possibility 36. For archaeologists the ability of ATONA™ amplifiers to precisely measure the isotopic composition of smaller amounts of Nd will allow for analyses of a wider range of artifacts, while still enabling conclusions to be made about the origin of archaeological samples.…”

Comparison and influence of 1011 and 1013 ohm resistors used for MC-ICP-MS determination of isotope ratios in highly enriched silicon

“…Several applications of high ohmic resistors using TIMS or MC-ICP-MS have been published in the recent past. [5][6][7][8][9][10][11][12] In the latest generation of the applied MC-ICP-MS (Neptune XT™, Thermo Fisher Scientic GmbH, Bremen, Germany), the gain calibration of the 10 13 U ampliers can be performed based on an implemented routine in the operating soware. The rst application of liquid sample measurements using the 10 13 U technology within an MC-ICP-MS was reported by Pfeifer et al, who described the determination of Ta isotope ratios yielding an improved uncertainty, previously limited by the low abundance of 180 Ta.…”