Studies of the living organic matter humification process are essential for understanding the carbon biogeochemical cycle. The aim of this study is to analyze relations between the properties of peat, peat humic acids...Studies of the living organic matter humification process are essential for understanding the carbon biogeochemical cycle. The aim of this study is to analyze relations between the properties of peat, peat humic acids and peat humification degree. The analysis has been done on samples of humic substances extracted from peat profiles in two ombrotrophic bogs and relations between peat age, decomposition and humification degree, botanical composition and properties of peat humic acids (elemental, functional composition) were studied. The found variability of peat properties is less significant than differences in the properties of peat-forming living matter, thus revealing the dominant impact of humification process on the properties of peat. Correspondingly, composition of peat humic acids is little affected by differences in the composition of precursor living organic material.展开更多
The oxdio-degradation of peat by nitric acid followed with extraction of humic acid(HA) and fulvic acid(FA) by sodium hydroxide has been carried out to increase the productivity of FA from peat. The additional FA coul...The oxdio-degradation of peat by nitric acid followed with extraction of humic acid(HA) and fulvic acid(FA) by sodium hydroxide has been carried out to increase the productivity of FA from peat. The additional FA could be obtained from filtrate by precitation with Al 2(SO 4) 3 solution. At optimum conditions the extracts of HA and FA from peat were 45.11% and 7.88%, respectively.展开更多
文摘Studies of the living organic matter humification process are essential for understanding the carbon biogeochemical cycle. The aim of this study is to analyze relations between the properties of peat, peat humic acids and peat humification degree. The analysis has been done on samples of humic substances extracted from peat profiles in two ombrotrophic bogs and relations between peat age, decomposition and humification degree, botanical composition and properties of peat humic acids (elemental, functional composition) were studied. The found variability of peat properties is less significant than differences in the properties of peat-forming living matter, thus revealing the dominant impact of humification process on the properties of peat. Correspondingly, composition of peat humic acids is little affected by differences in the composition of precursor living organic material.
文摘The oxdio-degradation of peat by nitric acid followed with extraction of humic acid(HA) and fulvic acid(FA) by sodium hydroxide has been carried out to increase the productivity of FA from peat. The additional FA could be obtained from filtrate by precitation with Al 2(SO 4) 3 solution. At optimum conditions the extracts of HA and FA from peat were 45.11% and 7.88%, respectively.