scholarly journals Radiocarbon Dating at Groningen: New and Updated Chemical Pretreatment Procedures

Radiocarbon ◽  
2019 ◽  
Vol 62 (1) ◽  
pp. 63-74 ◽  
Author(s):  
M W Dee ◽  
S W L Palstra ◽  
A Th Aerts-Bijma ◽  
M O Bleeker ◽  
S de Bruijn ◽  
...  
Keyword(s):  
Mass Spectrometer ◽  
Radiocarbon Dating ◽  
Uncertainty Propagation ◽  
Chemical Pretreatment ◽  
Chemical Preparation ◽  
Accelerator Mass Spectrometer ◽  
Quality Checks ◽  
Practical Information ◽  
The University ◽  
Routine Procedures

ABSTRACTThe Centre for Isotope Research (CIO) at the University of Groningen has operated a radiocarbon (14C) dating laboratory for almost 70 years. In 2017, the CIO received a major upgrade, which involved the relocation of the laboratory to new purpose-built premises, and the installation of a MICADAS accelerator mass spectrometer. This period of transition provides an opportunity to update the laboratory’s routine procedures. This article addresses all of the processes and quality checks the CIO has in place for registering, tracking and pretreating samples for radiocarbon dating. Complementary updates relating to radioisotope measurement and uncertainty propagation will be provided in other forthcoming publications. Here, the intention is to relay all the practical information regarding the chemical preparation of samples, and to provide a concise explanation as to why each step is deemed necessary.

Radiocarbon Dating User Samples with the BINP Accelerator Mass Spectrometer

2020 ◽  
Vol 17 (4) ◽  
pp. 635-638
Author(s):  
S. A. Rastigeev ◽  
A. D. Goncharov ◽  
V. F. Klyuev ◽  
E. S. Konstantinov ◽  
V. V. Parkhomchuk ◽  
...  
Keyword(s):  
Mass Spectrometer ◽  
Radiocarbon Dating ◽  
Accelerator Mass Spectrometer

AMS Radiocarbon Dating: Its Current and Future Role in Art Research

MRS Bulletin ◽  
1992 ◽  
Vol 17 (1) ◽  
pp. 53-60 ◽  
Author(s):  
D.C. Stulik ◽  
D.J. Donahue
Keyword(s):  
Mass Spectrometer ◽  
Radiocarbon Dating ◽  
Inorganic Materials ◽  
Archaeological Research ◽  
Art Conservation ◽  
Future Role ◽  
Ams Radiocarbon Dating ◽  
Art Objects ◽  
Accelerator Mass Spectrometer ◽  
Art Research

Since the development of 14C dating by W.F. Libby in the 1940s and 1950s, the method has proved to be the best absolute method for chronometric dating of organic and some carbon-containing inorganic materials. It has become an essential research tool for both archaeologists and geologists. Even broader application horizons have been opened to radiocarbon dating by use of the accelerator mass spectrometer, which allows routine analysis of submilligram samples. Art curatorship and art conservation directly benefit from this development.There are pronounced similarities between application of radiocarbon dating in archaeology and art research but there are also major differences which make it difficult to simply take a methodology developed for archaeological research and apply it directly to radiocarbon dating of art objects.In both fields the application of dating techniques focuses on dating an object of unknown age or cross-checking the age of an object previously dated by other methods.

scholarly journals Study of Bone Radiocarbon Dating Accuracy at the University of Arizona NSF Accelerator Facility for Radioisotope Analysis

Radiocarbon ◽  
1987 ◽  
Vol 29 (1) ◽  
pp. 24-44 ◽  
Author(s):  
Thomas W Stafford ◽  
A J T Jull ◽  
Klaus Brendel ◽  
Raymond C Duhamel ◽  
Douglas Donahue
Keyword(s):  
Radiocarbon Dating ◽  
Fossil Bone ◽  
Accelerator Facility ◽  
University Of Arizona ◽  
Accelerator Mass Spectrometer ◽  
Calcified Tissue ◽  
The University ◽  
Original Organic Matter ◽  
Age Determinations ◽  
The Ideal

Bone would seem to be an ideal material for14C dating because this calcified tissue contains 20 weight per cent protein. Fossil bone, however, can lose most of its original organic matter and frequently contains contaminants having different14C ages. Numerous14C dates on bone have been available to archaeologists and geologists but many age determinations have been inaccurate despite over 30 years of research in the field following the first14C age determinations on bone (Arnold & Libby, 1951). This situation remained unchanged until simple pretreatments were abandoned and more bone-specific fractions were isolated. The ideal solution is to use accelerator mass spectrometer14C dating, which facilitates the use of milligram-sized amounts of highly purified compounds—an approach impossible to pursue using conventional14C decay-counting methods.

A New Graphitization System for Radiocarbon Dating with AMS in the Dendrochronological Laboratory at AGH-UST Kraków

Radiocarbon ◽  
2018 ◽  
Vol 60 (4) ◽  
pp. 1091-1100 ◽  
Author(s):  
Marek Krąpiec ◽  
Andrzej Rakowski ◽  
Matthias Huels ◽  
Damian Wiktorowski ◽  
Christian Hamann
Keyword(s):  
Carbon Dioxide ◽  
Radiocarbon Dating ◽  
Age Determination ◽  
Younger Dryas ◽  
Vacuum System ◽  
Good Reproducibility ◽  
Chemical Preparation ◽  
Vacuum Line ◽  
Accelerator Mass Spectrometer ◽  
Subfossil Wood

AbstractA new vacuum system for the preparation of graphite samples for radiocarbon (14C) measurement using an accelerator mass spectrometer (AMS) was constructed at the Dendrochronological Laboratory in AGH-UST Kraków. The central part of the system is a manual vacuum line for the production of graphite from carbon dioxide for subsequent AMS measurements. The graphitization system can handle up to five samples simultaneously, and the process lasts for approximately 1 hour. The graphitization line was built to support the preparation of wood samples for a project dedicated to dating a subfossil tree from the Younger Dryas period. For this purpose, the chemical preparation procedure for wood samples was optimized to obtain more reliable results. This includes the extraction of α-cellulose to increase the precision of the age determination. The performance of the system was tested with NIST OxII, IAEA standards (IAEA C3, C5, C6, and C8), and background samples. The results of the 13 samples of subfossil wood were tested and are presented. The methodology gives good reproducibility of results obtained for the samples prepared using this system.

scholarly journals Results of Tests and Measurements from the Nsf Regional Accelerator Facility for Radioisotope Dating

Radiocarbon ◽  
1983 ◽  
Vol 25 (2) ◽  
pp. 719-728 ◽  
Author(s):  
D J Donahue ◽  
T H Zabel ◽  
A J T Jull ◽  
P E Damon ◽  
K H Purser
Keyword(s):  
Mass Spectrometer ◽  
Tree Rings ◽  
Tandem Accelerator ◽  
Accelerator Facility ◽  
Tests And Measurements ◽  
University Of Arizona ◽  
Accelerator Mass Spectrometer ◽  
The University

Tests of performance of the tandem accelerator mass spectrometer at the NSF Regional Facility at the University of Arizona are discussed. Results of measurements on some tree rings and on some archaeologic samples are presented.

Dating Tom Ketchum: The Role of Chronometric Determinations in Rock Art Analysis

1993 ◽  
Vol 13 (3) ◽  
pp. 219-247 ◽  
Author(s):  
Mary M. Farrell ◽  
Jeffery F. Burton
Keyword(s):  
Mass Spectrometer ◽  
Radiocarbon Dating ◽  
Rock Art ◽  
Way Of Life ◽  
Social Differences ◽  
Accelerator Mass Spectrometer ◽  
Art Analysis ◽  
Insight Into ◽  
Game Animals

Rock art analysis has been used both to provide insight into prehistoric symbolism and ceremony, and to measure prehistoric interaction and communication. But chronological control, essential to distinguishing functional or social differences from temporal differences, has been difficult to establish. No one method of dating has yet proven completely reliable or applicable. Accelerator mass spectrometer radiocarbon dating, at the Tom Ketchum Cave pictograph site in southeastern Arizona, provides one of the first examples of direct independent dating of rock art. The dates suggest the pictographs may have been created during a time when subsistence patterns were shifting from Archaic hunter and gatherer traditions to more agriculture-based subsistence. The Tom Ketchum Cave artists broke from the abstract style more common in the region to represent game animals and hunters, perhaps to ensure success in a disappearing way of life.

scholarly journals Radiocarbon Dating of Deep-Sea Sediments: A Comparison of Accelerator Mass Spectrometer and Beta-Decay Methods

Radiocarbon ◽  
1989 ◽  
Vol 31 (2) ◽  
pp. 105-116 ◽  
Author(s):  
G A Jones ◽  
A J T Jull ◽  
T W Linick ◽  
D J Donahue
Keyword(s):  
Beta Decay ◽  
Mass Spectrometer ◽  
Deep Sea ◽  
Radiocarbon Dating ◽  
Analysis Time ◽  
Basic Principles ◽  
Accelerator Mass Spectrometer ◽  
Deep Sea Sediments

Radiocarbon dating (Libby, 1955) has been an important tool in the marine sciences since the early 1950s (eg, Arrhenius, Kjellberg & Libby, 1951; Ericson et al, 1956; Broecker, Ewing & Heezen, 1960; Emery & Bray, 1962) and the basic principles and analytic procedures of the method have changed little. In the late 1970s, the Accelerator Mass Spectrometer (AMS) method of 14C dating was developed (Bennett et al, 1977, 1978), the major advantages being that samples several thousand times smaller than needed for beta-decay counting can be dated, and analysis time is reduced to ca 1 hr from the 1–6 days needed for beta-decay methods.

A New 6MV Accelerator Mass Spectrometer for the University of Cologne

2008 ◽  
Vol 18 (3) ◽  
pp. 26-28 ◽  
Author(s):  
Alfred Dewald ◽  
Jan Jolie ◽  
Andreas Zilges
Keyword(s):  
Mass Spectrometer ◽  
Accelerator Mass Spectrometer ◽  
The University

scholarly journals 14C AMS at Suerc: Improving QA Data with the 5MV Tandem and 250KV SSAMS

Radiocarbon ◽  
2010 ◽  
Vol 52 (2) ◽  
pp. 263-271 ◽  
Author(s):  
P Naysmith ◽  
G T Cook ◽  
S P H T Freeman ◽  
E M Scott ◽  
R Anderson ◽  
...  
Keyword(s):  
Quality Assurance ◽  
Sample Preparation ◽  
Mass Spectrometer ◽  
Random Access ◽  
Capacity Measurement ◽  
Tandem Accelerator ◽  
Standard Data ◽  
Accelerator Mass Spectrometer ◽  
On Line ◽  
Automated Data Acquisition

In 2003, a National Electrostatics Corporation (NEC) 5MV tandem accelerator mass spectrometer was installed at SUERC, providing the radiocarbon laboratory with 14C measurements to 4–5‰ repeatability. In 2007, a 250kV single-stage accelerator mass spectrometer (SSAMS) was added to provide additional 14C capability and is now the preferred system for 14C analysis. Changes to the technology and to our operations are evident in our copious quality assurance data: typically, we now use the 134-position MC-SNICS source, which is filled to capacity. Measurement of standards shows that spectrometer running without the complication of on-line δ13C evaluation is a good operational compromise. Currently, 3‰ 14C/13C measurements are routinely achieved for samples up to nearly 3 half-lives old by consistent sample preparation and an automated data acquisition algorithm with sample random access for measurement repeats. Background and known-age standard data are presented for the period 2003–2008 for the 5MV system and 2007–2008 for the SSAMS, to demonstrate the improvements in data quality.

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