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An improved acetyl bromide procedure for determining lignin in woods and wood pulps

โœ Scribed by K. Iiyama; A. F. A. Wallis

Publisher
Springer
Year
1988
Tongue
English
Weight
554 KB
Volume
22
Category
Article
ISSN
0043-7719

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โœฆ Synopsis

The acetyl bromide procedure for spectrophotometrically determining lignin in wood and wood pulp samples has been modified by adding perchloric acid to the digestion medium. This enables faster dissolution of the materials and the use of coarser samples. Subsequent treatment of the digestion mixtures with larger amounts of sodium hydroxide than those used in the conventional procedure has obviated the need for treatment with hydroxylamine. The modified method has been successfully applied to woodmeals and pulps from Pinus radiata and Eucalyptus species.

๐Ÿ“œ SIMILAR VOLUMES

Determination of lignin in herbaceous pl
Determination of lignin in herbaceous plants by an improved acetyl bromide procedure
โœ Kenji Iiyama; Adrian F A Wallis ๐Ÿ“‚ Article ๐Ÿ“… 1990 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 904 KB

## Abstract A modified acetyl bromide procedure is proposed for the spectrophotometric determination of lignin in herbaceous plants. The digestion with 25 % acetyl bromide (AcBr) in acetic acid at 70ยฐC is improved by including 4 % perchloric acid in the digesting solutions. This allows for more rap