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    Measurement of Radiocarbon Content in Leaves from Some Japanese Sites

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    Author
    Muraki, Yasushi
    Masuda, Kimiaki
    Arslanov, K.
    Toyoizumi, Hiroaki
    Kato, Masataka
    Naruse, Yukiko
    Murata, Takuya
    Nishiyama, Tohru
    Issue Date
    2001-01-01
    
    Metadata
    Show full item record
    Citation
    Muraki, Y., Masuda, K., Arslanov, K., Toyoizumi, H., Kato, M., Naruse, Y., ... & Nishiyama, T. (2001). Measurement of radiocarbon content in leaves from some Japanese sites. Radiocarbon, 43(2B), 695-701.
    Publisher
    Department of Geosciences, The University of Arizona
    Journal
    Radiocarbon
    Description
    From the 17th International Radiocarbon Conference held in Jerusalem, Israel, June 18-23, 2000.
    URI
    http://hdl.handle.net/10150/654533
    DOI
    10.1017/S0033822200041357
    Additional Links
    http://radiocarbon.webhost.uits.arizona.edu/
    Abstract
    We have measured radiocarbon contents in leaves collected from 15 sites in Japan, including mountain areas and big city areas for last three years. Comparing the radiocarbon contents in various areas, high 14C concentrations (80-100‰ as δ14C) are seen for the leaves from the mountain and country sites. On the contrary, low concentrations (5-40‰) were observed for the leaves from city region, especially near the road with heavy traffic. These results indicate that the atmosphere of the mountain and country sites in Japan is still clean but the CO2 gas coming from fossil non-radioactive carbon significantly pollutes the atmosphere of the city sites. The value of δ14C for the mountain areas implies that 14C produced by nuclear bomb test in 1960s still remains. The decrease of δ14C at heavy traffic sites in Tokyo is consistent with the increase of CO2 concentration in the atmosphere assuming that almost all CO2 gas in this region originates from the fossil fuel.
    Type
    Proceedings
    text
    Language
    en
    ISSN
    0033-8222
    ae974a485f413a2113503eed53cd6c53
    10.1017/S0033822200041357
    Scopus Count
    Collections
    Radiocarbon, Volume 43, Number 2B (2001)

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