Based on model experiments on the sorption of chemical elements from multicomponent solutions with fungi biomass, lignite, and humic acids, it was assumed that qualitative changes in organic matter during the transformation of plant biomass into coal controlled the predomination of one of the sorption mechanisms. At the initial stage, the biomass of microscopic fungi may contribute to fixation of significant volumes of elements with the formation of zero-valent particles due to a combination of the mechanisms of ion exchange, chelation, and reduction reactions. Subsequently, mostly due to ion exchange, humic acids may fix significant volumes of Cu, Cr, Zn, Co, Ni, Pb, and Fe with the formation of organomineral compounds. Many fewer elements are sorbed on lignite, and this proceeds mainly by the mechanism of intermolecular interactions.

中文翻译：

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来自 Sergeevskoe 矿床（上阿穆尔地区）中下中新世褐煤组分对杂质元素的吸附

基于真菌生物质、褐煤和腐殖酸从多组分溶液中吸附化学元素的模型实验，假设植物生物质转化为煤过程中有机质的质变控制了吸附机制之一的优势。在初始阶段，由于离子交换、螯合和还原反应机制的结合，微观真菌的生物质可能有助于固定大量元素并形成零价颗粒。随后，主要是由于离子交换，腐殖酸可以固定大量的铜、铬、锌、钴、镍、铅和铁，形成有机矿物化合物。褐煤上吸附的元素要少得多，这主要是通过分子间相互作用的机制进行的。