Abstract

The samples of native and hydrogen peroxide–modified humic acids (HAs) separated from brown coals of the Tisul’skoe deposit in the Kansk-Achinsk Basin were obtained. The HA samples were characterized by instrumental methods: elemental and technical analysis and EPR spectroscopy. The modification of HAs affected the structural-group composition and decreased the concentration of paramagnetic centers (PMCs). The biological activity of native and modified humic acids was evaluated by phytotesting with the use of Iren varietal wheat seeds as an example. The highest biological activity was manifested at an HA concentration of 0.005%. A tendency toward a decrease in the biological activity with a decrease in the concentration of PMCs was revealed.

中文翻译：

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天然和改性腐殖酸的生物活性

摘要

从坎斯克-阿钦斯克盆地提苏尔科伊矿床的褐煤中分离出的天然和过氧化氢改性的腐植酸（HAs）样品。HA样品通过仪器方法表征：元素和技术分析以及EPR光谱。HA的修饰影响了结构基团的组成并降低了顺磁中心（PMC）的浓度。天然和修饰的腐殖酸的生物活性通过植物试验以艾伦品种小麦种子为例进行评估。HA浓度为0.005％时，表现出最高的生物活性。揭示了随着PMC浓度降低生物活性降低的趋势。