ACCELERATOR MASS SPECTROMETRY SAMPLE PREPARATION: METHODS FOR **1**4C IN 50-1000 MICROGRAM SAMPLES.

George A. Klouda, Lloyd A. Currie, Douglas J. Donahue, A. J.Timothy Jull, Ted H. Zabel

Research output: Contribution to journalConference article

Abstract

A joint project was undertaken by the National Bureau of Standards (NBS) Atmospheric Chemistry Group and University of Arizona (UoA) Tandem Accelerator Mass Spectrometry Group to develop and evaluate accelerator **1**4C measurements of 50-1000 mu g carbon samples at a modest accuracy of 5-10%. Fe-C alloy targets prepared from standards and samples averaged 1. 6 mu A **1**2C** minus current. **1**4C measuremets yielded 5% precision and accuracy, limited by a blank equivalent to 11% modern carbon for targets containing approx. 100 mu g carbon. The contamination level was estimated to be approx. 15 mu g contemporary carbon (current atmospheric **1**4C). These results demonstrated that the Fe-C target is quite suitable for atmospheric and environmental studies that require measuring fossil/biogenic carbon in microgram samples.

Original languageEnglish (US)
Pages (from-to)B5/2
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume233
StatePublished - Nov 1 1984
Externally publishedYes
EventAccel Mass Spectrom, Proc of the 3rd Int Symp -
Duration: Apr 10 1984Apr 13 1984

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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