Determination of boron in wood impregnated with boron-containing conservants
1994
Ignash, R. | Bernane, E. | Schwartz, E. (Institute of Inorganic Chemistry of the Latvian Academy of Sciences, Riga (Latvia))
A method of determination of boron in wood preserved by boron- containing conservants has been developed. Wood is dissolved in a mixture of conc. nitric acid and conc. sulphuric acid, the boron is extracted by chloroform solution of 2,2-dipropyl-1,3-propanediol and determined in the extract photometrically using 4,4'-dimethoxydibenzoylmethane. The direct determination of boron in the extract without preliminary reextraction allows to reduce the time necessary for analysis and increases the accuracy of obtained results.
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