在中国煤矿排水中解脱溶解有机物:潜在有毒元素的成分,来源和环境影响
Yanqing Ding1, Chengliang Wang1, Mengyang Sun1
1School of Resource and Geosciences, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China.
Ecotoxicology and environmental safety
|February 10, 2026
概括
煤矿排水中的溶解有机物与有毒元素相互作用,造成风险. 煤炭衍生DOM成分受到水地化学的影响,影响环境管理策略.
科学领域:
- 环境化学环境化学
- 有机地化学 有机地化学
- 水文地质学 水文地质学
背景情况:
- 煤矿排水中的溶解有机物 (DOM) 是潜在有毒元素 (PTEs) 构成的环境风险的一个关键因素.
- 了解DOM的组成及其与PTE的相互作用对于管理煤炭产区的环境影响至关重要.
研究的目的:
- 用多光谱学对CMD进行水地化学分类并分析DOM组成.
- 研究DOM特征,PTE丰富和环境因素之间的关系.
- 阐明分子层面对CMD中的DOM转换和反应性的洞察力.
主要方法:
- 37个CMD样本的水地化学分类.
- 对DOM的多谱分析.
- 冗余分析 (RDA) 用于识别DOM光谱变化的驱动因素.
- 使用XGBoost-SHAP建模来预测分子反应性.
主要成果:
- CMD样品被分为三种类型,第二类显示严重的PTE丰富 (例如Fe,Tl).
- DOM主要是由素衍生的,微生物衍生的成分,芳香度和分子重量在各个类别之间有所不同.
- (Ba) 被确定为DOM光谱变化的重要驱动因素.
- 来自煤炭的DOM转化途径包括脱碳化和添加氧气,受减少状态的影响.
- 碳的标称氧化状态和O/C比率是分子反应性的关键预测指标.
结论:
- 在CMD中,DOM的成分受到水地化学和环境因素的显著控制,这表明本土来源和微弱的化.
- 煤炭是CMD中DOM的主要来源,其中素和CHO化合物占主导地位.
- 对DOM反应性的分子层次理解对于煤矿区的有效环境管理至关重要.
关键词:
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