文献类型： 外文期刊

第一作者： Xu, Da-Mao

作者： Xu, Da-Mao;Dai, Dong-Sheng;Zhou, Lai;Zhu, Xue-Qiang;Xu, Da-Mao;Shi, Yu-Xiang;Liu, Yi-Kai;Wen, Xiong-Chao;Jiang, Shao-Jun;Chi, Wei-Wei

作者机构：

关键词： Contaminated soils; Mineral element composition; Microscale distribution; DOM molecular characteristics; Mineral-OM interactions

期刊名称：JOURNAL OF HAZARDOUS MATERIALS （ 影响因子：11.3； 五年影响因子：12.4 ）

ISSN： 0304-3894

年卷期： 2025 年 484 卷

页码：

收录情况： SCI

摘要： To date, how complex mineral-organic matter (OM) interactions affect the migration and mobility of potentially toxic elements (PTEs) in soils is highly understudied. This work mainly focused on the occurrence characteristics of PTEs and their close association with the composition characterization of mineral elements and dissolved OM (DOM) molecules. The results revealed that quartz (20.20%), albite (15.60%) and biotite (14.37%) were the dominant minerals in soils. CHO molecules were most abundant, accounting for 58.41%. The unsaturated hydrocarbons with both low and high O/C ratios were the dominant organic compounds, accounting for 21.56% and 36.73%, respectively. Sequential extraction results indicated that most Cd was hosted in carbonate minerals, while considerable amounts of As, Cu, Mn, Pb and Zn were bound to Fe/Mn oxyhydroxides. The elemental distribution characteristics displayed the coexistence of As, Cd, Cu, Mn, Pb and Zn with O, S, Al, Si, Ca and Fe. Fe oxyhydroxides might preferentially retain the unsaturated hydrocarbons with low O/C ratio and phenols. Furthermore, Fe oxide-organic composites had more significant impacts on Mn than As, Cd, Cu, Pb and Zn mobility. Overall, these findings would provide important insights into how mineral-OM interactions played the key roles on PTEs mobility in soils.

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