The fate of Cd in Soils with Various Particle Sizes: Characteristics, Speciation Distribution and Influencing Factors.

IF 2.7 4区 环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES Bulletin of Environmental Contamination and Toxicology Pub Date : 2024-10-22 DOI:10.1007/s00128-024-03968-w
Junwei Tang, Chaolan Zhang, Xutong Liu, Xianghua Wu, Yibo Zhang, Tao Zhang, Ruijing Xia, Kai Zhong
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Abstract

This study investigated the distribution of Cd in soil water-stable aggregate particles of varying sizes, revealing that smaller particles have higher total Cd content as well as different forms of Cd content, with the clay particle showing a greater tendency to accumulate Cd. However, the proportion of high activity Cd is lower in clay particles, posing a lower environmental risk of Cd transformation compared to silt particles. Adsorption experiments indicated that the clay particle exhibits the strongest adsorption capacity and highest adsorption rate. Additionally, correlation and principal component analyses identified Fe-Mn oxides and organic matter as the primary influencing factors on Cd distribution characteristics, with pH playing a secondary role. These findings provide valuable insights for the remediation of heavy metal-contaminated soil.

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不同粒径土壤中镉的归宿:特征、物种分布和影响因素。
这项研究调查了不同大小的土壤水稳定集料颗粒中镉的分布情况,结果表明,较小的颗粒中总镉含量较高,而且镉含量的形式也各不相同,其中粘土颗粒更容易积累镉。不过,粘土颗粒中高活性镉的比例较低,与淤泥颗粒相比,镉转化的环境风险较低。吸附实验表明,粘土颗粒的吸附能力最强,吸附率最高。此外,相关分析和主成分分析表明,铁-锰氧化物和有机物是影响镉分布特征的主要因素,pH 值是次要因素。这些发现为重金属污染土壤的修复提供了宝贵的启示。
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来源期刊
CiteScore
5.60
自引率
3.70%
发文量
230
审稿时长
1.7 months
期刊介绍: The Bulletin of Environmental Contamination and Toxicology(BECT) is a peer-reviewed journal that offers rapid review and publication. Accepted submissions will be presented as clear, concise reports of current research for a readership concerned with environmental contamination and toxicology. Scientific quality and clarity are paramount.
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