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KMID : 0903519690120010115
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Journal of the Korean Society of Agricultural Chemistry and Biotechnology
1969 Volume.12 No. 1 p.115 ~ p.118
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Soil Chemical Studies on the Humic Substances of Paddy soils(Ⅰ)
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Abstract
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In a series of studies on the formation processes and chemical properties of humic substances from paddy soils the photoabsorption spectra of hymatomelanic and humic acids were recorded in the visible, ultraviolet and infrared regions.
The spectra patterns of both fractions in the visible range were indicative of the decrease in optical density with the rise of wavelength and the, UV-spectra showed the maximum peak at 235 mμ, the minimum at 395 mμ.
The IR-spectra indicate a typical pattern showing a few sharp peaks in both fractions.
The spectra of both fractions were compared and discussed.
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