Effect of Moisture Content on Selenate and Selenite Determination Using DGT

Authors

  • Yu Zhang

    1. Faculty of Engineering, UCSI University, Kuala Lumpur 56000, Malaysia; 2. Guangdong Digital Orchard Engineering Technology Research Center, Meizhou 514015, China; 3. College of Geographical Science and Tourism, Jiaying University, Meizhou 514015, China
  • Xinghan Wang

    Pearl River Water Resources Research Institute, Guangzhou 510000, China
  • Yanan Liu

    1. Guangdong Digital Orchard Engineering Technology Research Center, Meizhou 514015, China; 2. College of Geographical Science and Tourism, Jiaying University, Meizhou 514015, China
  • Yankui Chen

    2Guangdong Digital Orchard Engineering Technology Research Center, Meizhou, 514015, Guangdong, China

    3Jiaying University, Meizhou, 514015, Guangdong, China
  • Luxuan Zhang

    Faculty of Engineering, Putra University, Selangor 43400, Malaysia
  • Yuxin Zhang

    International College, Krirk University, Bangkok 10220, Thailand
  • Yu Zhang

    International College, Krirk University, Bangkok 10220, Thailand

DOI:

https://doi.org/10.30564/jees.v7i5.8534
Received: 23 January 2025 | Revised: 4 March 2025 | Accepted: 5 March 2025 | Published Online: 9 May 2025

Abstract

Traditional studies on transforming selenate and selenite are often limited by static measurements and low spatial resolution. They do not fully consider the impact of moisture content. This paper uses the DGT (diffusive gradients in thin films) technique to deeply explore how moisture changes affect the transformation of selenate and selenite in the environment (changes in properties over time). First, representative soil samples (loess) are prepared, and their moisture content is adjusted. Fixed concentrations of selenate and selenite are added, and then the DGT device simulates their migration in the natural environment. The experiment covers drought, moisture, and high moisture environments, and the experiment is repeated under each condition to ensure the accuracy of the data. The sample quality is verified and further analyzed by ion chromatography (IC) and atomic absorption spectroscopy (AAS). This article uses DGT technology to study the influence of moisture content on the migration and transformation of selenate and selenite in soil. Results indicate that increased moisture content leads to higher concentrations, diffusion rates, and DGT capture efficiency of both selenium species, highlighting the importance of moisture in their environmental behavior. When the moisture content increased from 25% to 65%, the coefficient of variation of selenate and selenite increased. The DGT technique proved effective in capturing spatial heterogeneity and providing high-precision measurements, offering robust data to advance research on selenium behavior in soils.

Keywords:

Diffusive Gradients in Thin Films; Selenate and Selenite; Transformation Effect Study; Moisture Content; Device Deployment

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How to Cite

Zhang, Y., Wang, X., Liu, Y., Chen, Y., Zhang, L., Zhang, Y., & Zhang, Y. (2025). Effect of Moisture Content on Selenate and Selenite Determination Using DGT. Journal of Environmental & Earth Sciences, 7(5), 401–412. https://doi.org/10.30564/jees.v7i5.8534

Issue

Vol. 7 , Iss. 5 (May 2025)

Article Type

Article

License

Copyright © 2025 Yu Zhang, Xinghan Wang, Yanan Liu, Yankui Chen, Luxuan Zhang, Yuxin Zhang, Yu Zhang

Creative Commons License

This is an open access article under the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) License.

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