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Role of fractionation in studying the photochemical properties of humic substances

โœ Scribed by G. Richard; G. Guyot; J. -P. Aguer; A. Ter Halle; O. E. Trubetskaya; O. A. Trubetskoi

Book ID
111459895
Publisher
Springer
Year
2008
Tongue
English
Weight
386 KB
Volume
78
Category
Article
ISSN
1070-3632

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โœ H.Kipton J. Powell; Eric Fenton ๐Ÿ“‚ Article ๐Ÿ“… 1996 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 990 KB

## Humic substances have been extracted from a standard reference peat at pH 2.0, 6.0-6.5, 9.0 and 12.0 using 0.01 M or 0.001 M Na4P207. Humic acids extracted at pH 6.0, 9.0 and 12.0 showed a progressive increase in mean molecular size, as determined by gel permeation chromatography. With increasi