EFFECT OF pH ON THE RELEASE OF ORGANIC MATTER FROM MUCKS
The effect of high pH values on the release of organic matter (OM) from mucks was investigated. This study was conducted on homoionic hydrogen forms of 7 mucks (Terric Histosols). Concentration of dissolved organic matter (DOM) released were determined colorimetrically at l=465 nm. Parameters Q2/6 and Q4/6 were calculated from spectra in visible region. The dissolution of soil OM was significantly affected by pH. The relationship could be satisfactorily described by the equation: DOM = 0.01Чexp(b1ЧpH). The b1 parameter quantified the DOM release process in relation to the changes in soil pH. The investigations proved correlations among W1, Q and b1 indexes.
Keywords: dissolved organic matter (DOM), mucks, pH, state of secondary transformation
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Issue: 3, 2009
Rubric: Physical, Chemical and Biological Properties of Bog Formation
Pages: 105 — 109
Downloads: 1501