けい光X線による木材中の油溶性防腐剤の分析:木材防腐剤の定着に関する分析化学的研究 (第4報)  [in Japanese] X-ray spectrochemical analysis of organic solvent type preservatives in wood  [in Japanese]

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Abstract

けい光X線分析法により木材に処理した油溶性防腐剤, TBT-Te (有機スズ塩), ナフテン酸銅, PCPなどの定量について検討した.試料は粉砕, 成型して測定に供した.樹種による粉砕性の相違, 粒度分布とX線強度のばらつきとの関係などを調べ, 粒度より試料の均一性が測定誤差に影響を与え, TBT-Teで処理した場合の試料調製誤差はブナは1~3%, スギは2~3%であった.樹種による組織の違い, 年輪の粗密, 薬液の浸透, 定着性の相違なども誤差の原因となるが, 非破壊分析の場合よりはるかに小さい.SnLα<SUB>1</SUB>, CuKα, ClKα強度はTBT-Te, ナフテン酸銅, PCPなどの木材に対する含有量がそれぞれ1.5%, 6%, 2%前後まででよい直線性を示した.<BR>応用例として, TBT-Teを含む薬剤で防腐処理した竹材について, TBT-Teの分析値から薬液浸透量を推定したものを示した.この場合も, 非破壊分析では組織の粗密が分析値を誤らせ, 粉砕試料の優位性を示した.

An X-ray spectrochemical method was employed in the determination of organic solvent type preservatives, such as tributyl tin terephthalate (TBT-Te), copper naphthenate, and pentachlorophenol (PCP), impregnating timbers. The measurements were done on the specimens prepared into briquettes by pressing powdered samples. The relation between grain size distribution and wood species, and their effect on the reproducibility of spectral intensities were investigated. The precision depended on uniformity of samples rather than their grain size. Errors coming from the preparation of briquettes were, in the case of TBT-Te treated samples, 13% in beech and 23% in cedar.<BR>Intensities of SnLα<SUB>1</SUB>, CuKα and ClKα changed linearly with the contents of TBT-Te, copper naphthenate and PCP in wood, up to 1.5%, 6% and 2%, respectively. The proposed method was applied to the estimation of retention rate of the preservative solution in bamboo by the determination of TBT-Te contained. The error due to the difference in wood tissue was much reduced by briquetting, compaired with that in the non-destructive analysis.

Journal

  • BUNSEKI KAGAKU

    BUNSEKI KAGAKU 17(1), 3-7, 1968

    The Japan Society for Analytical Chemistry

Codes

  • NII Article ID (NAID)
    130000944549
  • NII NACSIS-CAT ID (NCID)
    AN00222633
  • Text Lang
    JPN
  • ISSN
    0525-1931
  • NDL Article ID
    8442790
  • NDL Source Classification
    ZP4(科学技術--化学・化学工業--分析化学)
  • NDL Call No.
    Z17-9
  • Data Source
    NDL  J-STAGE 
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