IDEAS home Printed from https://ideas.repec.org/a/gam/jagris/v14y2024i12p2289-d1543276.html
   My bibliography  Save this article

Characteristics of Dissolved Organic Matter (DOM) Combined with As in Fe-Rich Red Soils of Tea Plantations in the Southern Anhui Province, East China

Author

Listed:
  • Youru Yao

    (Key Laboratory of Earth Surface Processes and Regional Response in the Yangtze-Huaihe River Basin, Anhui Province, School of Geography and Tourism, Anhui Normal University, Wuhu 241002, China
    These authors contributed equally to this work.)

  • Juying Li

    (Nanjing Institute of Environmental Science, Ministry of Ecology and Environment, Nanjing 210042, China
    These authors contributed equally to this work.)

  • Kang Ma

    (Key Laboratory of Earth Surface Processes and Regional Response in the Yangtze-Huaihe River Basin, Anhui Province, School of Geography and Tourism, Anhui Normal University, Wuhu 241002, China)

  • Jingyi Zhang

    (Key Laboratory of Earth Surface Processes and Regional Response in the Yangtze-Huaihe River Basin, Anhui Province, School of Geography and Tourism, Anhui Normal University, Wuhu 241002, China)

  • Yuesheng Lin

    (Key Laboratory of Earth Surface Processes and Regional Response in the Yangtze-Huaihe River Basin, Anhui Province, School of Geography and Tourism, Anhui Normal University, Wuhu 241002, China)

  • Huarong Tan

    (Key Laboratory of Earth Surface Processes and Regional Response in the Yangtze-Huaihe River Basin, Anhui Province, School of Geography and Tourism, Anhui Normal University, Wuhu 241002, China)

  • Jia Yu

    (Nanjing Institute of Environmental Science, Ministry of Ecology and Environment, Nanjing 210042, China)

  • Fengman Fang

    (Key Laboratory of Earth Surface Processes and Regional Response in the Yangtze-Huaihe River Basin, Anhui Province, School of Geography and Tourism, Anhui Normal University, Wuhu 241002, China)

Abstract

Dissolved organic matter (DOM) is widely present in soil environments and plays a crucial role in controlling the morphology, environmental behavior, and hazards of arsenic (As) in soil. In the Fe-rich red soil of tea plantations, the decomposition of tea tree litter complicates DOM properties, leading to more uncertain interactions between DOM, Fe, and As. This study focused on three tea plantations in Huangshan City to investigate the contents of DOM, Fe, and As in surface red soils ( Ferralsols ) and establish their correlations. Three-dimensional fluorescence spectroscopy and PARAFAC analysis methods were used to analyze the DOM components and fluorescence signatures. Additionally, the process and mechanism of the binding of DOM-Fe with As were explored through laboratory experiments on the morphological transformation of As by DOM-Fe. The results showed that the pH values of the soils in the three tea plantations ranged from 3.9 to 5.2, and the entire sample was strongly acidic. The DOM exhibited strong intrinsic properties and low humification, containing three types of humic acid components and one intermediate protein component. The DOC content in the Fe-rich red soil did not have a direct correlation with Fe and As, but the interaction of DOM fractions with Fe significantly influenced the As content. Specifically, the interaction of protein-like fractions with Fe had a more pronounced effect on the As content. The maximum sorption rate of As by DOM was 15.45%, and this rate increased by 49 to 75% with the participation of Fe. In the configuration of the metal electron bridge, Fe acts as a cation, forming a connecting channel between the negatively charged DOM and As, thus enhancing the DOM’s binding capacity to As. DOM-Fe compounds bind As through surface pores and functional groups. These findings provide deeper insights into the influence of DOM on As behavior in Fe-rich soil environments and offer theoretical support for controlling As pollution in red soil.

Suggested Citation

  • Youru Yao & Juying Li & Kang Ma & Jingyi Zhang & Yuesheng Lin & Huarong Tan & Jia Yu & Fengman Fang, 2024. "Characteristics of Dissolved Organic Matter (DOM) Combined with As in Fe-Rich Red Soils of Tea Plantations in the Southern Anhui Province, East China," Agriculture, MDPI, vol. 14(12), pages 1-15, December.
    • Handle: RePEc:gam:jagris:v:14:y:2024:i:12:p:2289-:d:1543276
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2077-0472/14/12/2289/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/2077-0472/14/12/2289/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Shuyou Zhang & Jiangjiang Zhang & Lili Niu & Qiang Chen & Qing Zhou & Nan Xiao & Jun Man & Jianqing Ma & Changlong Wei & Songhe Zhang & Yongming Luo & Yijun Yao, 2024. "Escalating arsenic contamination throughout Chinese soils," Nature Sustainability, Nature, vol. 7(6), pages 766-775, June.
    2. Yingyuting Li & Yili Zhang & Junyu Chen & Guangfei Yang & Haihui Li & Jinjin Wang & Wenyan Li, 2024. "Ecological Risk Assessment and Source Analysis of Heavy Metals in Farmland Soil in Yangchun City Based on APCS-MLR and Geostatistics," Agriculture, MDPI, vol. 14(2), pages 1-16, February.
    3. Jian Zhang & Ruidong Yang & Rong Chen & Yishu Peng & Xuefeng Wen & Lei Gao, 2018. "Accumulation of Heavy Metals in Tea Leaves and Potential Health Risk Assessment: A Case Study from Puan County, Guizhou Province, China," IJERPH, MDPI, vol. 15(1), pages 1-22, January.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Honghua Chen & Xinxin Sun & Longhui Sun & Yunce An & Ying Xiao & Jintao Zhang & Yunpeng Hong & Xiaodong Song, 2024. "A Comprehensive Study of Spatial Distribution, Pollution Risk Assessment, and Source Apportionment of Topsoil Heavy Metals and Arsenic," Land, MDPI, vol. 13(12), pages 1-20, December.
    2. Juan Liu & Weihong Lu & Naiming Zhang & Dan Su & Ladu Zeer & Hongdie Du & Kelin Hu, 2021. "Collaborative Assessment and Health Risk of Heavy Metals in Soils and Tea Leaves in the Southwest Region of China," IJERPH, MDPI, vol. 18(19), pages 1-16, September.
    3. Yunni Chang & Fuying Jiang & Josep Peñuelas & Jordi Sardans & Zhidan Wu, 2024. "Assessment of Heavy Metals in Tea Plantation Soil and Their Uptake by Tieguanyin Tea Leaves and Potential Health Risk Assessment in Anxi County in Southeast China," Agriculture, MDPI, vol. 14(11), pages 1-17, October.
    4. Grażyna Kowalska, 2021. "The Safety Assessment of Toxic Metals in Commonly Used Herbs, Spices, Tea, and Coffee in Poland," IJERPH, MDPI, vol. 18(11), pages 1-19, May.
    5. Yongqiang Ning & Bizheng Yang & Shaochen Yang & Jiaxin Ye & Junjie Li & Limin Ren & Zhifu Liu & Xiangyang Bi & Jinling Liu, 2023. "Application of Pb Isotopes and REY Patterns in Tracing Heavy Metals in Farmland Soils from the Upper-Middle Area of Yangtze River," IJERPH, MDPI, vol. 20(2), pages 1-13, January.
    6. Huijuan Yang & Yan Chen & Jennifer M. Shido & Randall T. Hamasaki & Wayne T. Iwaoka & Stuart T. Nakamoto & Haiyan Wang & Qing X. Li, 2022. "Potential Health Risk of Aluminum in Four Camellia sinensis Cultivars and Its Content as a Function of Leaf Position," IJERPH, MDPI, vol. 19(19), pages 1-9, September.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jagris:v:14:y:2024:i:12:p:2289-:d:1543276. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.