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Measurement of tritium in tree rings: Isolation of α-cellulose from wood chips using explosive depressurization

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Abstract

Explosive depressurization offered an effective pre-treatment for isolating α-cellulose from wood chips using the common chlorite method. This operation shortened the time required for isolation of α-cellulose of relatively high purity by up to 6 h, and raised the relative crystallinity of the product to 65–72% from 50% or below for the unexploded samples. The steam-explosion was carried out by combining 2 min of pre-hydrolysis at a pressure of 3.55 MPa with a rapid decompression. This was found to be the best operating condition for pine wood chips of 1 mm thickness to analyze the tritium content in tree rings accurately.

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Authors and Affiliations

  1. School of Pharmacy, Hokuriku University, Kanagawa-machi, 920-11, Kanazawa, (Japan)

    Y. Yamada, N. Kiriyama & C. Nishimoto

  2. Low level Radioactivity Laboratory, Kanazawa University, Tatsunokuchi-machi, 923-12, Ishikawa, (Japan)

    M. Itoh, K. Komura & K. Ueno

Authors
  1. Y. Yamada
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  2. M. Itoh
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  3. N. Kiriyama
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  4. C. Nishimoto
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  5. K. Komura
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  6. K. Ueno
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Yamada, Y., Itoh, M., Kiriyama, N. et al. Measurement of tritium in tree rings: Isolation of α-cellulose from wood chips using explosive depressurization. Journal of Radioanalytical and Nuclear Chemistry, Articles 130, 169–175 (1989). https://doi.org/10.1007/BF02037710

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  • DOI: https://doi.org/10.1007/BF02037710

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