Determination of 14 C in Volcanic Gas By Accelerator Mass Spectrometry

Radioactive nuclides such as radiocarbon can be good tracers for investigating the circulation of underground carbon and water. Volcanic gas can be sampled reliably for 14 C analysis and prepared for analysis by accelerator mass spectrometry (AMS). In this paper, we establish a method for the measur...

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Bibliographic Details
Published in:Radiocarbon
Main Authors: Yoshikawa, Hideki, Nakahara, Hiromichi, Imamura, Mineo, Kobayashi, Kouichi, Nakanishi, Takashi
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 2005
Subjects:
General Earth and Planetary Sciences
Archeology
New Zealand
White Island
Online Access:http://dx.doi.org/10.1017/s0033822200019718
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033822200019718
Description
Summary:Radioactive nuclides such as radiocarbon can be good tracers for investigating the circulation of underground carbon and water. Volcanic gas can be sampled reliably for 14 C analysis and prepared for analysis by accelerator mass spectrometry (AMS). In this paper, we establish a method for the measurement of 14 C in volcanic gas, and measure the amounts of 14 C in various volcanic gases. Samples of fumarolic gas from some Japanese volcanoes were found to contain 0.5 to 4.2 pMC, while those from White Island in New Zealand contained 2.6 pMC. Dissolved gas from Lake Nyos, Cameroon, contained 0.4 to 4.8 pMC. The data indicate a mixing process between surface carbon and deep carbon.

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