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| 亳州市地下水铁锰空间分布特征及成因分析 |
| Spatial Distribution Characteristics and Genesis Analysis of Iron and Manganese in Groundwater of Bozhou |
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| DOI： |
| 中文关键词: 铁 锰 空间分布 水化学特征 成因分析 地下水 亳州市 |
| 英文关键词: Iron Manganese Spatial 〖HK〗distribution Hydrochemical characteristics Genesis analysis Groundwater Bozhou |
| 基金项目:国家自然科学基金“燃煤过程中战略性元素的多相重构与靶向调控机制”面上资助项目（42272196）；国家自然科学基金“腐泥煤中元素的地球化学形成与成矿机理”面上资助项目（42272193）；安徽省淮北平原地下水环境背景值调查服务（第3包）基金资助项目（2023BFAFZ01400-3） |
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| 摘要点击次数: 110 |
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| 中文摘要: |
| 采集34组浅层、131组中深层亳州市地下水样品，综合运用数理统计、水文地球化学图解、空间插值及多元统计分析手段，探究亳州市浅层、中深层地下水铁锰空间分布规律与富集主控机制。结果表明：研究区地下水整体为中性偏碱性、偏高矿化度水体，浅层地下水以HCO3-Na·Mg·Ca型为主，中深层地下水为 HCO3-Na型，水体离子演化主要受岩石溶滤作用控制；研究区地下水中铁含量整体达标，仅局部点位超标，锰元素富集现象集中于浅层含水层；矿物风化淋滤是铁锰富集的核心诱因，浅层铁锰累积受还原环境与农业活动共同影响，中深层强还原、偏碱性环境抑制元素迁移，导致铁锰组分持续富集。 |
| 英文摘要: |
| 34 shallow and 131 middle deep groundwater samples were collected in Bozhou. Integrated methods including mathematical statistics， hydrogeochemical diagrams， spatial interpolation， and multivariate statistical analysis were employed to clarify the spatial distribution patterns and main enrichment mechanisms of iron and manganese in the shallow and middle deep groundwater of Bozhou. The results showed that the regional groundwater was generally neutral to slightly alkaline with relatively high mineralization. Shallow groundwater was dominated by the HCO3 Na·Mg·Ca type， while middle deep groundwater belonged to the HCO3 Na type， and the hydrochemical evolution was mainly controlled by rock leaching. Iron concentrations in the study area generally met the standards except at isolated sites， and manganese enrichment was mainly concentrated in shallow aquifers. Mineral weathering and leaching 〖GK!87mm〗were the primary causes of iron and manganese enrichment. The enrichment of iron and manganese in the shallow groundwater was jointly affected by reducing conditions and agricultural activities， while the strong reducing and slightly alkaline environment in the middle deep groundwater restricted element migration， leading to the continuous enrichment of iron and manganese. |
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