重金属淋滤影响因素分析
Analysis of Factors Influencing Heavy Metal Leaching
DOI: 10.12677/AEP.2023.132019, PDF,    科研立项经费支持
作者: 纪东如, 黄杰良, 季东楼：桂林理工大学地球科学学院，广西 桂林；李亚君：桂林理工大学机械与控制工程学院，广西 桂林
关键词: 土壤；淋溶；重金属；释放；动力学；Soil； Eluviation； Heavy Metals； Release； Dynamics
摘要: 土壤重金属污染具有隐蔽性、累积性、长期性。模拟实验是揭示土壤重金属活化迁移规律和机理的有效方法。本文通过总结前人研究成果发现，土壤的理化性质主要是通过影响土壤中重金属的赋存形态进而对重金属的迁移能力产生影响。同时，各重金属的化学性质对重金属迁移也存在重要的影响，不同的金属呈现出不同的迁移规律。通过对各重金属累积淋出曲线进行拟合，双常数方程(Freundlich修正式)、抛物线方程和修正Elovich方程对土壤中重金属累积释放拟合结果较好，而一级动力学方程则稍差。
Abstract: Heavy metal pollution in soil has the characteristics of concealment, accumulation and long-term. Simulation experiment is an effective method to reveal the law and mechanism of heavy metal ac-tivation and migration in soil. Through summarizing the previous research results, this paper found that the physical and chemical properties of soil mainly affect the transport capacity of heavy metals by affecting the occurrence forms of heavy metals in soil. At the same time, the physical and chemical properties of heavy metals also have an important impact on the migration of heavy metals, and different metals show different leaching laws. Through fitting the cumulative leaching curve of heavy metals, the fitting results of the modified Elovich equation, parabolic equation and two-constant equation for the leaching process of heavy metals in soil are good, while the first-order kinetic equation is slightly poor.
文章引用：纪东如, 李亚君, 黄杰良, 季东楼. 重金属淋滤影响因素分析[J]. 环境保护前沿, 2023, 13(2): 149-156. https://doi.org/10.12677/AEP.2023.132019

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