pH对铅生物有效性的影响研究进展
Research Progress in the Effect of pH on Pb Bioavailability
DOI: 10.12677/HJSS.2020.81004, PDF,  被引量   
作者: 刘春湘：农业农村部环境保护科研监测所，天津
关键词: 土壤pH；Pb；生物有效性；机理；Soil pH Value； Lead； Bioavailability； Mechanism
摘要: 铅(Pb)作为土壤重金属“五毒”元素之一，土壤被污染后会毒害农产品，并可通过土壤–作物系统进入食物链，危害人体健康。影响土壤Pb生物有效性的因素已经成为近年来的研究热点，其中土壤理化性质的影响的研究较成熟，得到了普遍的认同，而pH是土壤理化性质中影响Pb生物有效性最重要的因素之一。本文简要介绍了土壤中Pb的污染现状、来源及危害，然后在国内外学者研究的基础上，详细论述了Pb的生物有效性，并从吸附解吸、形态变化和生物活性三个方面重点分析了土壤pH对Pb的影响，提出了土壤pH对Pb生物有效性影响的未来研究方向，旨在为土壤中Pb的迁移转化规律及Pb污染土壤的修复与治理提供参考依据。
Abstract: Lead (Pb) is non-essential for plants and animals and is known as one of the five most toxic envi-ronmental pollutants. Polluted soil will result in toxin in agricultural products and lead can enter into food chain by soil-crop system, which will hurt human beings. Factors affecting the bioavaila-bility of soil lead have been one of the focuses of environmental science in recent years. The re-search on the influence of soil physical and chemical properties is mature and has been widely recognized, and pH is one of the most important factors affecting the bioavailability of Pb. In this paper, the source of lead, accumulation and migration in agricultural soil-crop were summarized. The effects of soil pH on Pb bioavailability were analyzed emphasizing three aspects: adsorp-tion-desorption, chemical form and biological activity. Finally, further research in the bioavailability of Pb was proposed, which would provide reference for the migration and transformation of Pb in soil and the repair of Pb contaminated soil.
文章引用：刘春湘. pH对铅生物有效性的影响研究进展[J]. 土壤科学, 2020, 8(1): 23-28. https://doi.org/10.12677/HJSS.2020.81004

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