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Updated: Jul 11, 2025

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现场Cd固定化与自然存在的矿物质使用分析层次过程的好处评估

Fangman Chen¹, Peng Mao², Mimi Wang¹

¹Xiaoliang Research Station of Tropical Coastal Ecosystems, Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, The CAS Engineering Laboratory for Ecological Restoration of Island and Coastal Ecosystems, and Guangdong Provincial Key Laboratory of Applied Botany, Chinese Academy of Sciences, South China Botanical Garden, Guangzhou, 510650, China; South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China.

|November 17, 2023

概括

石,多洛米特和瓦拉斯托尼特有效地减少土壤中的 (Cd). 石在米中固定Cd方面表现出最高的效率,为重金属土壤整治提供了有价值的方法.

科学领域:

环境科学环境科学
土壤科学土壤科学
农业科学农业科学

背景情况:

重金属污染,特别是 (Cd),对土壤健康和食品安全构成重大风险.
固定是修复重金属污染土壤的关键策略,而选择的剂量至关重要.
开发有效的固定剂评估系统对于成功的土壤整治至关重要.

研究的目的:

设计和应用一个使用分析层次过程 (AHP) 的综合评分系统来评估Cd污染土壤的三种固定剂.
评估瓦拉斯托尼特,多洛米特和石在减少大米中Cd积累方面的可行性和有效性.
为了确定Cd污染土壤修复的最佳固定剂.

主要方法:

基于分析层次流程 (AHP) 的四个标准和11个指标的评分系统的开发.
在Cd污染的土壤中应用wollastonite,dolomite和calcite,以评估它们对大米中Cd积累的影响.
在土壤和大米中测量Cd减少率和可用的Cd度.

主要成果:

所有测试剂 (瓦拉斯托尼特,多洛米特,石) 都显著降低了大米中的Cd积累.
单次应用Cd的降解率为:伏拉斯托尼特 (67.6%),多洛米特 (46.9%) 和石 (83.8%).
石表现出最高的固定性和稳定性表现,在早期和晚期大米中获得了很好的评分,优于其他药物.

结论:

开发的基于AHP的评分系统为评估土壤修复剂提供了可靠的方法.
石是固定土壤中Cd并减少大米吸收的最有效剂,其次是多洛米特 + 硫糖醇,然后是沃拉斯托尼特.
这项研究为选择适当的固定剂和开发重金属污染土壤的整治策略提供了宝贵的见解.

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