Research status and prospect on risk assessment and key technologies for the prevention and remediation of heavy metal pollution in leafy vegeta-bles
ZHANG Shun
CHEN Huanli
MA Li
WANG Fang
ZHANG He
YANG Hailong
ZHANG Xiaoyan
LIU Chenghong
Abstract：Demonstrate significant heavy metal contamination risks predominantly from atmospheric sedimentation,agro-chemical applications,and industrial pollution,etc.Compared with other vegetable taxa,leafy vegetables have a signifi-cantly elevated bio-accumulation of heavy metals.It is crucial for reducing such contamination risks to elucidating the ab-sorption,accumulation,and enrichment patterns of heavy metals in leafy vegetables,coupled with developing targeted phytoremediation strategies against contamination.While extensive research has been conducted across global agricultur-al systems on point-source heavy metal contamination in leafy vegetables,investigations into non-point source pollution mechanisms and associated human health risk assessments remain significantly understudied.A comprehensive review and analysis of the literature on heavy metal pollution in major vegetables and leafy vegetables,both domestic and interna-tional was conducted.The heavy metal pollution situations of different vegetable types were compared.It was revealed that leafy vegetables were subject to the most severe heavy metal pollution,and there were marked inter-species diver-gence in heavy metal pollution among different kinds of leafy vegetables.To address heavy metal contamination in leafy vegetables,strategic cultivation in low-contamination farmlands is advised.Research should prioritize elucidating contam-ination dynamics in open-field versus facility-grown systems,while concurrently selecting low-accumulation cultivars and implementing tailored agronomic practices.This integrated approach effectively reduces contaminant levels and estab-lishes a scientific framework for risk mitigation.
Keywords：Leafy vegetableHeavy metalPollutionPreventionRepair technology
Publication Date：2025-07-05
Online Publishing Date：2025-09-12(First online date of this platform, not the publication date of the document)
Pages：8( 17-24 )