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首页> 外文期刊>The Science of the Total Environment >Arsenic in soils and plants of woodland regenerated on an arsenic-contaminated substrate: A sustainable natural remediation?
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Arsenic in soils and plants of woodland regenerated on an arsenic-contaminated substrate: A sustainable natural remediation?

机译：林地土壤和植物中的砷在被砷污染的基质上再生：可持续的自然修复？

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摘要

Plant As accumulation at three As-polluted sites where spontaneous re-vegetation has taken place is examined. Each site had a different source of soil As (coal fly ash, LeBlanc process waste, canal dredging). Plant analysis indicates that soil-plant As transfer is poor at each site. Any mobile As is retained in root tissues, with little transfer to shoots. Bryophytes, pteridophytes, herbaceous and woody plants sampled at each site predominantly showed As concentrations of < 3 mg kg~(-1) dry wt, whilst total soil As ranged between 50 and 220 mg kg~(-1) dry wt. Risk associated with food chain transfer at these sites is low when compared to other routes such as direct ingestion/inhalation of As-contaminated particulates re-entrained from an unvegetated or unstable substrate.
机译：检查了在三个As污染地点自发重新植被的植物As积累情况。每个站点都有不同的土壤砷源（粉煤灰，勒布朗加工废料，河道疏ed）。植物分析表明，每个位置的土壤-植物As转移都很差。任何移动的砷都保留在根组织中，几乎没有转移到枝条上。在每个地点取样的苔藓植物，蕨类植物，草本植物和木本植物主要显示出As浓度<3 mg kg〜（-1）干重，而总土壤As介于50和220 mg kg〜（-1）干重之间。与其他途径相比，例如直接摄入/吸入从无植被或不稳定基质中夹带的被As污染的颗粒物，与这些地点的食物链转移相关的风险较低。

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