土壤-作物系统重金属污染及防治研究进展
Research Progress on Heavy Metals Pollution and Its Control in Soil-Crop System
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摘要: 我国土壤污染中无机污染占比较大，而无机污染中重金属污染问题尤为突出。当前，由于工农业生产、矿产开采、燃料燃烧和车辆排放等各种人类活动，土壤-作物系统中的重金属污染状况正在恶化，且农产品受重金属影响日趋严重。本文概括了土壤-作物系统中重金属的来源、危害，阐述了该系统重金属的污染现状及人体健康风险评价，着重分析了重金属生物有效性对人体健康风险的影响，总结了当前用于治理土壤重金属污染的修复技术和防控措施，以期为土壤污染修复及防治工作提供参考，降低土壤重金属污染产生的人体健康风险，保障食物安全。Abstract: Soil contamination in China mainly involves inorganic pollution. Of all types of inorganic pollution, heavy metals in the soil puts forward rigorous challenges to the environment. Admittedly, human activities such as industrial and agricultural production, mineral exploration, fuel combustion, and vehicle emissions have unavoidably introduced heavy metals to the soil-crop system constantly, resulting in an increasingly severe impact on agricultural products. This study was carried out to address the following specific objectives:(1) review the sources of heavy metal pollutants and their harm to the soil-crop system, (2) elaborate on the status quo of heavy metal pollution in the system, and further assess the potential human health risks, (3) sum up current soil remediation technologies and control measures to provide references for reducing health risks and guaranteeing food safety.
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Key words:
- heavy metals /
- soil-crop system /
- human health risks /
- sources /
- hazards /
- bioavailability
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