scholarly journals Radiocarbon Measurement Program at the Centro Nacional de Aceleradores (CNA), Spain

Radiocarbon ◽  
2009 ◽  
Vol 51 (2) ◽  
pp. 883-889 ◽  
Author(s):  
F Javier Santos Arévalo ◽  
Isabel Gómez Martínez ◽  
Manuel García León
Keyword(s):  
Mass Spectrometry ◽  
Sample Preparation ◽  
Accelerator Mass Spectrometry ◽  
Scientific Community ◽  
Sample Processing ◽  
Main Research ◽  
Research Programs ◽  
Set Up ◽  
Reference Samples

In September 2005, an accelerator mass spectrometry (AMS) system based on a 1MV Tandetron accelerator arrived at the Centro Nacional de Aceleradores (CNA). One of the main research programs for this AMS facility is based on radiocarbon. At the same time as the AMS facility was installed and tested, the 14C sample preparation laboratory was designed and set up. A graphitization line that allows the preparation of 5 samples in parallel was designed and built in October 2006. The first months were mainly dedicated to check and optimize all the sample processing. For such a task, several reference samples have been prepared and measured. Since the beginning of 2007, the laboratory has been fully operational and is currently performing as a service for the scientific community. During 2007, nearly 100 unknown samples were prepared and measured in our AMS system. Most of them were for dating purposes, but also other applications were investigated. The performance of the 14C laboratory and dating service will be shown, with some examples as illustration.

scholarly journals Progress in Radiocarbon Target Preparation at the Antares AMS Centre

Radiocarbon ◽  
2001 ◽  
Vol 43 (2A) ◽  
pp. 275-282 ◽  
Author(s):  
Q Hua ◽  
G E Jacobsen ◽  
U Zoppi ◽  
E M Lawson ◽  
A A Williams ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Sample Preparation ◽  
Accelerator Mass Spectrometry ◽  
Sample Pretreatment ◽  
Small Samples ◽  
Sample Processing ◽  
Target Preparation ◽  
Recent Developments ◽  
Technical Details ◽  
Fe Reduction

We present routine methods of target preparation for radiocarbon analysis at the ANTARES Accelerator Mass Spectrometry (AMS) Centre, as well as recent developments which have decreased our procedural blank level and improved our ability to process small samples containing less than 200 μg of carbon. Routine methods of 14C sample preparation include sample pretreatment, CO2 extraction (combustion, hydrolysis and water stripping) and conversion to graphite (graphitization). A new method of cleaning glassware and reagents used in sample processing, by baking them under a stream of oxygen, is described. The results show significant improvements in our procedural blanks. In addition, a new graphitization system dedicated to small samples, using H2/Fe reduction of CO2, has been commissioned. The technical details of this system, the graphite yield and the level of fractionation of the targets are discussed.

RADIOCARBON IN MEXICO: FROM PROPORTIONAL COUNTERS TO AMS

Radiocarbon ◽  
2021 ◽  
pp. 1-7
Author(s):  
Corina Solís ◽  
Efraín Chávez ◽  
Arcadio Huerta ◽  
María Esther Ortiz ◽  
Alberto Alcántara ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Sample Preparation ◽  
High Voltage ◽  
Accelerator Mass Spectrometry ◽  
Science And Technology ◽  
National Council ◽  
University Of Arizona ◽  
Technological Developments ◽  
High Voltage Engineering ◽  
The University

ABSTRACT Augusto Moreno is credited with establishing the first radiocarbon (14C) laboratory in Mexico in the 1950s, however, 14C measurement with the accelerator mass spectrometry (AMS) technique was not achieved in our country until 2003. Douglas Donahue from the University of Arizona, a pioneer in using AMS for 14C dating, participated in that experiment; then, the idea of establishing a 14C AMS laboratory evolved into a feasible project. This was finally reached in 2013, thanks to the technological developments in AMS and sample preparation with automated equipment, and the backing and support of the National Autonomous University of Mexico and the National Council for Science and Technology. The Mexican AMS Laboratory, LEMA, with a compact 1 MV system from High Voltage Engineering Europa, and its sample preparation laboratories with IonPlus automated graphitization equipment, is now a reality.

Development of a C12Im-Cl-assisted method for rapid sample preparation in proteomic application

2021 ◽  
Author(s):  
Chang Liu ◽  
Xiaoxia Si ◽  
Shumei Yan ◽  
Xinyuan Zhao ◽  
Xiaohong Qian ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Sample Preparation ◽  
Protein Extraction ◽  
Sample Processing ◽  
Processing Methods ◽  
Proteomic Analyses

Chromatography and mass spectrometry (MS) techniques have greatly improved the power of proteomic analyses. However, sample processing methods, including protein extraction and digestion, before MS remain as bottlenecks in the...

scholarly journals Radiocarbon Sample Preparation at the Circe AMS Laboratory in Caserta, Italy

Radiocarbon ◽  
2007 ◽  
Vol 49 (2) ◽  
pp. 225-232 ◽  
Author(s):  
Isabella Passariello ◽  
Fabio Marzaioli ◽  
Carmine Lubritto ◽  
Mauro Rubino ◽  
Antonio D'Onofrio ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Sample Preparation ◽  
Accelerator Mass Spectrometry ◽  
Isotope Fractionation ◽  
Background Levels

A system with several lines for the preparation of graphite targets for radiocarbon analysis has been built at the new accelerator mass spectrometry (AMS) facility in Caserta, Italy. Special attention has been paid in the design to the reduction of background contamination during sample preparation. Here, we describe the main characteristics of these preparation lines. Results of tests performed to measure 14C background levels and isotope fractionation in several blank samples with the Caserta AMS system are presented and discussed.

scholarly journals Dating Organic Temper of Ceramics By Ams: Sample Preparation and Carbon Evaluation

Radiocarbon ◽  
1999 ◽  
Vol 41 (3) ◽  
pp. 315-320 ◽  
Author(s):  
Denise C Gomes ◽  
Oscar Vega
Keyword(s):  
Mass Spectrometry ◽  
Sample Preparation ◽  
Accelerator Mass Spectrometry ◽  
Total Carbon ◽  
Archaeological Ceramics ◽  
Brazilian Amazonia ◽  
Ceramic Samples

We describe a new methodology for separating organic temper from archaeological ceramics from Brazilian Amazonia. These experimental procedures were designed to directly date ceramic samples by accelerator mass spectrometry (AMS). An evaluation of the total carbon indicates the samples’ potential for dating.

scholarly journals Centre of Research and Restoration of the Museums of France: AMS Radiocarbon Dates List 1

Radiocarbon ◽  
2010 ◽  
Vol 52 (4) ◽  
pp. 1689-1700 ◽  
Author(s):  
P Richardin ◽  
N Gandolfo ◽  
B Moignard ◽  
C Lavier ◽  
C Moreau ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Accelerator Mass Spectrometry ◽  
Scientific Community ◽  
Archaeological Remains ◽  
Radiocarbon Dates ◽  
National Project ◽  
Historical Monuments ◽  
Museum Objects

The national project for the measurement of radiocarbon includes different scientific partners for the accelerator named ARTEMIS (French acronym for Accélérateur pour la Recherche en sciences de la Terre, Environnement, Muséologie Installé à Saclay), available to the scientific community since 2004 (Cottereau et al. 2007). The French Ministry of Culture uses this accelerator mass spectrometry (AMS) facility at the request of archaeologists or curators of museums or of historical monuments. For the preparation of some samples, a laboratory has been installed at the Centre of Research and Restoration of the Museums of France, located in the Louvre Palace. In this report, the first data carried out on vegetal samples from museum objects or archaeological remains, dates are presented in terms of yr BP (before AD 1950).

scholarly journals Status Report on Sample Preparation Protocols Developed at the LMC14 Laboratory, Saclay, France: From Sample Collection to 14C AMS Measurement

Radiocarbon ◽  
2017 ◽  
Vol 59 (3) ◽  
pp. 713-726 ◽  
Author(s):  
J-P Dumoulin ◽  
C Comby-Zerbino ◽  
E Delqué-Količ ◽  
C Moreau ◽  
I Caffy ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Sample Preparation ◽  
Accelerator Mass Spectrometry ◽  
Storage Time ◽  
Status Report ◽  
Sample Collection ◽  
Laboratory Sample ◽  
Different Types ◽  
Chemical Pretreatments ◽  
Sampling Procedures

AbstractThe main objective of this report is to present the dating process routinely applied to different types of samples at the Laboratoire de Mesure du Carbone 14 (LMC14). All the results and protocols refer to our procedures over the last 5 years. A description of the sorting and chemical pretreatments of the samples as well as the extraction and graphitization of CO2 are reported. Our last study concerning the degradation of the blank level according to the storage time of the targets between graphitization and accelerator mass spectrometry (AMS) measurement is also presented. This article also provides information on how to submit a valid laboratory sample. We give details relating to sampling procedures on site as well as contamination issues relative to the 14C dating methodology.

AMS Measurement of 59Ni at China Institute of Atomic Energy

Radiocarbon ◽  
2013 ◽  
Vol 55 (2) ◽  
pp. 302-307 ◽  
Author(s):  
Ming He ◽  
Xiangdong Ruan ◽  
Wei Wang ◽  
Liang Dou ◽  
Lingbo Xie ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Radioactive Waste ◽  
Waste Management ◽  
Accelerator Mass Spectrometry ◽  
Detection System ◽  
Atomic Energy ◽  
Detection Sensitivity ◽  
Research Fields ◽  
Laboratory Reference ◽  
Reference Samples

The long-lived radioisotope 59Ni is of interest in various research fields including neutron dosimetry, radioactive waste management, and astrophysics. In order to achieve the sensitivity required for such applications, the technique of accelerator mass spectrometry (AMS) 59Ni measurement has been developed at the AMS facility at China Institute of Atomic Energy (CIAE). Based on the AE-Q3D detection system in the CIAE AMS facility, the interference in 59Ni counting from the isobar 59Co has been reduced by a factor of 8 × 106. A series of laboratory reference samples and a blank sample were measured to check the performance of 59Ni measurement. A detection sensitivity of about 5 × 10−13 (59Ni/Ni) has been obtained.

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