scholarly journals Radiocarbon Sample Preparation Procedures and the First Status Report from the Bristol Radiocarbon AMS (BRAMS) Facility

Radiocarbon ◽  
2019 ◽  
Vol 61 (5) ◽  
pp. 1541-1550 ◽  
Author(s):  
Timothy D J Knowles ◽  
Paul S Monaghan ◽  
Richard P Evershed
Keyword(s):  
Mass Spectrometry ◽  
Sample Preparation ◽  
Method Validation ◽  
Accelerator Mass Spectrometry ◽  
Status Report ◽  
Sample Type ◽  
Pretreatment Method ◽  
Wide Range ◽  
University Of Bristol ◽  
The University

ABSTRACTThe Bristol Radiocarbon Accelerator Mass Spectrometry (BRAMS) Facility was established at the University of Bristol after the commissioning of our dedicated sample preparation laboratories and the installation and acceptance of the BrisMICADAS AMS in 2016. Routine measurements commenced in mid-2016, once validation was completed for each sample type. Herein, we give an overview of the standard pretreatment methods currently employed in the Facility and the results of radiocarbon (14C) determinations on a wide range of standards, blank materials, and intercomparison samples which have been measured during our extensive pretreatment method validation program and during our routine 14C analyses.

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.

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.

scholarly journals The Keck Carbon Cycle AMS Laboratory, University of California, Irvine: Status Report

Radiocarbon ◽  
2010 ◽  
Vol 52 (2) ◽  
pp. 301-309 ◽  
Author(s):  
Robert K Beverly ◽  
Will Beaumont ◽  
Denis Tauz ◽  
Kaelyn M Ormsby ◽  
Karl F von Reden ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Carbon Cycle ◽  
Accelerator Mass Spectrometry ◽  
University Of California ◽  
Status Report ◽  
Sample Throughput ◽  
Laboratory Procedures ◽  
The University

We present a status report of the accelerator mass spectrometry (AMS) facility at the University of California, Irvine, USA. Recent spectrometer upgrades and repairs are discussed. Modifications to preparation laboratory procedures designed to improve sample throughput efficiency while maintaining precision of 2–3‰ for 1-mg samples (Santos et al. 2007c) are presented.

scholarly journals AMS 14C Sample Preparation at the KCCAMS/UCI Facility: Status Report and Performance of Small Samples

Radiocarbon ◽  
2007 ◽  
Vol 49 (2) ◽  
pp. 255-269 ◽  
Author(s):  
G M Santos ◽  
R B Moore ◽  
J R Southon ◽  
S Griffin ◽  
E Hinger ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Time Series ◽  
Sample Preparation ◽  
Accelerator Mass Spectrometry ◽  
Small Samples ◽  
Status Report ◽  
And Performance

We present an overview of accelerator mass spectrometry (AMS) radiocarbon sample preparation and measurements, describing the technical upgrades that now allow us to routinely obtain 0.2–0.3% precision for 1-mg carbon samples. A precision of ∼1% on samples with 100 μg of carbon can also be achieved. We have also developed graphitization techniques and AMS procedures for ultra-small samples (down to 0.002 mg of carbon). Detailed time series are presented for large and small aliquots of standards such as NIST OX-I and OX-II; FIRI-C and -D; IAEA-C6, -C7 and -C8; and 14C-free samples.

scholarly journals Status report of the Trondheim Radiocarbon Laboratory

Radiocarbon ◽  
2019 ◽  
Vol 61 (6) ◽  
pp. 1963-1972 ◽  
Author(s):  
Martin Seiler ◽  
Pieter M Grootes ◽  
John Haarsaker ◽  
Sylvie Lélu ◽  
Izabela Rzadeczka-Juga ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Sample Preparation ◽  
Accelerator Mass Spectrometry ◽  
Isotope Ratio ◽  
National Laboratory ◽  
Age Determination ◽  
Status Report ◽  
Data Handling ◽  
Isotope Ratio Mass Spectrometer ◽  
Cleaning Procedures

ABSTRACTThe Trondheim radiocarbon (14C) laboratory has evolved from a traditional radiocarbon decay counting laboratory to an accelerator mass spectrometry (AMS) facility primarily measuring 14C. This evolution required adjustments in sample preparation and data handling to match the capacity of the AMS system and reduction in sample sizes to about 1 mgC. We summarize here the steps involved in dating a sample at the National Laboratory for Age Determination in Trondheim, Norway. These include the structure of our sample database for information handling, sample cleaning procedures for different sample types, our reduction systems, both an automated EA-based system for regular use and a manual system for more challenging samples, and data evaluation. We will also briefly summarize the capabilities of our isotope-ratio mass spectrometer.

Developments in mycotoxin analysis: an update for 2012-2013

2014 ◽  
Vol 7 (1) ◽  
pp. 3-33 ◽  
Author(s):  
F. Berthiller ◽  
P.A. Burdaspal ◽  
C. Crews ◽  
M.H. Iha ◽  
R. Krska ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Sample Preparation ◽  
Ergot Alkaloids ◽  
Tandem Mass ◽  
Wide Range ◽  
Rapid Spread ◽  
Food And Feed ◽  
Mycotoxin Analysis ◽  
The Individual

This review highlights developments in mycotoxin analysis and sampling over a period between mid-2012 and mid-2013. It covers the major mycotoxins: aflatoxins, Alternaria toxins, ergot alkaloids, fumonisins, ochratoxins, patulin, trichothecenes and zearalenone. A wide range of analytical methods for mycotoxin determination in food and feed were developed last year, in particular immunochemical methods and liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS)-based methods. After a section on sampling and sample preparation, due to the rapid spread and developments in the field of LC-MS/MS multimycotoxin methods, a separate section has been devoted to this area of research. It is followed by a section on mycotoxins in botanicals and spices, before continuing with the format of previous reviews in this series with dedicated sections on method developments for the individual mycotoxins.

Can-AMS: The New Accelerator Mass Spectrometry Facility At The University Of Ottawa

2011 ◽  
Author(s):  
W. E. Kieser ◽  
X.-L. Zhao ◽  
I. D. Clark ◽  
T. Kotzer ◽  
A. E. Litherland ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Accelerator Mass Spectrometry ◽  
Mass Spectrometry Facility ◽  
The University

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.

Isobar suppression for 36Cl accelerator mass spectrometry at the University of Tsukuba

2019 ◽  
Vol 438 ◽  
pp. 131-135 ◽  
Author(s):  
Seiji Hosoya ◽  
Kimikazu Sasa ◽  
Tsutomu Takahashi ◽  
Tetsuya Matsunaka ◽  
Masumi Matsumura ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Accelerator Mass Spectrometry ◽  
The University
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