Usharani B, Vasudevan N
a Centre for Environmental Studies, Anna University , Chennai , India.
Arch Environ Occup Health. 2016;71(2):102-10. doi: 10.1080/19338244.2014.988674. Epub 2014 Dec 2.
The objective of this review is to throw light upon the global concern of heavy metal-contaminated sites and their remediation through an ecofriendly approach. Accumulated heavy metals in soil and water bodies gain entry through the food chain and pose serious threat to all forms of life. This has engendered interest in phytoremediation techniques where hyperaccumulators are used. Constructed wetland has a pivotal role and is a cost-effective technique in the remediation of heavy metals. Metal availability and mobility are influenced by the addition of chelating agents, which enhance the availability of metal uptake. This review helps in identifying the critical knowledge gaps and areas to enhance research in the future to develop strategies such as genetically engineered hyperaccumulators to attain an environment devoid of heavy metal contamination.
本综述的目的是通过生态友好型方法，阐明全球对重金属污染场地及其修复的关注。土壤和水体中积累的重金属通过食物链进入人体，对所有生命形式构成严重威胁。这引发了人们对使用超积累植物的植物修复技术的兴趣。人工湿地在重金属修复中具有关键作用，且是一种经济高效的技术。螯合剂的添加会影响金属的有效性和迁移性，从而提高植物对金属的吸收能力。本综述有助于识别关键的知识空白和未来加强研究的领域，以制定诸如基因工程超积累植物等策略，从而实现一个无重金属污染的环境。
