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农业土壤中可用的重金属度:与土壤性质的关系以及不同行业的重金属总度

Yakun Wang¹, Zhuo Zhang², Yuanyuan Li¹

¹School of Land Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China.

Journal of hazardous materials

|April 27, 2024

概括

农业土壤中的重金属污染是一个越来越令人担忧的问题. 土壤的特性,特别是pH值,显著影响可用的重金属度,在炼,化学和采矿行业的重要性各不相同.

科学领域:

环境科学环境科学
土壤科学土壤科学
地质化学地质化学

背景情况:

在全球范围内,农业土壤中的重金属 (HM) 污染正在增加.
了解影响HM可用性的因素对于风险评估至关重要.
影响因不同工业污染源 (炼,化学,采矿) 而异.

研究的目的:

调查影响三大主要工业影响的农业土壤中可用的HM度的主要因素.
量化分析土壤特性和HM总度对HM可用性的贡献.
为土壤污染控制和风险评估提供特定行业的指导.

主要方法:

来自Web of Science的165篇研究论文 (2000-2023) 的元分析.
相关性和冗余性分析,以评估因素和可用的HM之间的关系.
梯度增强决策树模型来量化因素贡献.

主要成果:

土壤的特性,特别是pH值,显著影响可用的HM度.
因素的重要性因行业而异;在化学工业中,pH是Pb和Zn的关键,而在炼和采矿中,总度占主导地位.
在总和可用的HM度之间没有发现显著的相关性.
土壤特性,特别是pH值,与可用的HM度呈负相关性.

结论:

特定行业的因素控制了农业土壤中可用的HM度.
土壤pH值是一个关键因素,但它的相对重要性在工业环境中不同.
这些研究结果支持为管理HM污染和评估不同工业影响区的风险量身定制的战略.

关键词:

现有的度可用.专注集中集中集中工业工业工业工业工业工业影响因素影响因素.总度总度总度

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