Yu Hanjing, Li Chenchen, Yan Jin, Ma Yaoqiang, Zhou Xinyu, Yu Wanquan, Kan Huiying, Meng Qi, Xie Ruosong, Dong Peng
Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology Kunming 650093 China
RSC Adv. 2023 Jan 25;13(6):3505-3519. doi: 10.1039/d2ra07095b. eCollection 2023 Jan 24.
The accumulation of heavy metals in soil and crops is considered to be a severe environmental problem due to its various harmful effects on animals and plants. Soil adsorption is an essential characteristic of mud, which is the fundamental reason for soil to have a specific self-purification capacity and environmental capacity for heavy metals. The adsorption of heavy metals by soil reduces the uptake of these pollutants by crops, thereby limiting food contamination. Therefore, the adsorption of heavy metals in crop soils was taken as the primary research object. Based on the entire reading of the literature, the previous research results were compared and discussed from the four aspects of heterogeneity, physical and chemical properties, competitive adsorption, and external factors. The influencing mechanism of heavy metal adsorption characteristics in soil was reviewed. Finally, suggestions and prospects for future research on heavy metal adsorption were put forward.
土壤和农作物中重金属的积累因其对动植物的各种有害影响而被视为一个严重的环境问题。土壤吸附是土壤的一个基本特性，这是土壤对重金属具有特定自净能力和环境容量的根本原因。土壤对重金属的吸附减少了作物对这些污染物的吸收，从而限制了食物污染。因此，将作物土壤中重金属的吸附作为主要研究对象。在全面阅读文献的基础上，从非均质性、物理化学性质、竞争吸附和外部因素四个方面对以往的研究成果进行了比较和讨论。综述了土壤中重金属吸附特性的影响机制。最后，对未来重金属吸附研究提出了建议和展望。
