• Title/Summary/Keyword: ansorptivities

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On the UV Spectra of AcBr Lignins from Softwoods grown in Mt. Jiri (지리산산(智異山産) 침엽수재(針葉樹材) AcBr Lignin의 UV Spectra에 대(對)하여)

  • Jo, Jong-Soo;Moon, Chang-Kuck
    • Journal of the Korean Wood Science and Technology
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    • v.12 no.3
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    • pp.35-40
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    • 1984
  • The ultraviolet absorption spectra of AcBr lignin (Acetyl Bromide lignin) from 10 species grown in Mt. Jiri were determined. There were 3 peak positions, at 249nm (max peak), at 267-268 nm (shallow min. peak) and at 280 nm (lower max. peak). The Bjorkman lignin and lignin sulfonic acid spectra had shoulders, but the AcBr lignin had not them. Average absorbances and absorptivities of the AcBr lignins at peak positions were $0.367{\pm}0.0015$, $24.56{\pm}0.0535$, at 249 nm, $0.278{\pm}0.0016$, $18.50{\pm}0.0569$, at 267-268 nm and $0.306{\pm}0.0016$, $20.42{\pm}0.0627$ at 280 nm, respectively.

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