Li Yadong, Xu Ronghua, Ma Congli, Yu Jie, Lei Shang, Han Qianying, Wang Hongjie
Hebei Key Laboratory of Close-to-Nature Restoration Technology of Wetlands, School of Eco-Environment, Hebei University, Baoding, 071002, China; Institute of Xiong'an New Area, Hebei University, Baoding, 071002, China.
Hebei Key Laboratory of Close-to-Nature Restoration Technology of Wetlands, School of Eco-Environment, Hebei University, Baoding, 071002, China; College of Life Science, Hebei University, Baoding, 071002, China; Institute of Xiong'an New Area, Hebei University, Baoding, 071002, China.
Environ Pollut. 2023 Nov 1;336:122340. doi: 10.1016/j.envpol.2023.122340. Epub 2023 Aug 8.
Soil cadmium (Cd) contamination is a global environmental issue facing agriculture. Under certain conditions, the stable Cd that bound to soil particles tend to be remobilized and absorbed into plants, which is seriously toxic to plant growth and threat food safety. Engineering nanomaterials (ENMs) has attracted increasing attentions in the remediation of Cd pollution in soil-plant system due to their excellent properties with nano-scale size. Herein, this article firstly systematically summarized Cd transformation in soil, transport in soil-plant system, and the toxic effects in plants, following which the functions of ENMs in these processes to remediate Cd pollution are comprehensively reviewed, including immobilization of Cd in soil, inhibition in Cd uptake, transport, and accumulation, as well as physiological detoxication to Cd stress. Finally, some issues to be further studied were raised to promote nano-remediation technology in the environment. This review provides a significant reference for the practical application of ENMs in remediation of Cd pollution in soil, and contributes to sustainable development of agriculture.
土壤镉（Cd）污染是农业面临的全球性环境问题。在一定条件下，与土壤颗粒结合的稳定镉易于被重新活化并被植物吸收，这对植物生长具有严重毒性并威胁食品安全。工程纳米材料（ENMs）因其纳米级尺寸的优异特性，在土壤-植物系统中镉污染的修复方面受到越来越多的关注。本文首先系统总结了镉在土壤中的转化、在土壤-植物系统中的迁移以及对植物的毒性效应，随后全面综述了工程纳米材料在这些过程中对镉污染修复的作用，包括镉在土壤中的固定、对镉吸收、运输和积累的抑制以及对镉胁迫的生理解毒作用。最后，提出了一些有待进一步研究的问题，以推动纳米修复技术在环境中的应用。本综述为工程纳米材料在土壤镉污染修复中的实际应用提供了重要参考，并有助于农业的可持续发展。
