Abstract

The elemental and structural-group compositions and paramagnetic properties of the humic acids of peat occurring at different depths of peat deposits of various geneses have been investigated. With decreasing the depth of peat occurrence, the extracted humic acids were characterized by a decrease in the Н/С ratio and the amount of carboxyl and methylene groups and an increase in the signal intensity of organic paramagnetic centers (PMCs), which indicated an increase in the aromatic conjugation structure. The change in the amount of PMCs in the humic acids of peat along the depth of a deposit was directly dependent on the Fe³⁺ content.

中文翻译：

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地球化学联系的沼泽景观系统中的腐殖酸特征

摘要

已经研究了在各种成因的泥炭沉积物的不同深度处发生的泥炭腐殖酸的元素和结构基组成以及顺磁性质。随着泥炭深度的减少，提取的腐殖酸的特征是Н/С比值降低，羧基和亚甲基数量减少，有机顺磁中心（PMCs）的信号强度增加，表明其增加在芳族共轭结构中。泥炭腐殖酸中PMC含量沿沉积深度的变化直接取决于Fe ³⁺含量。