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The Mercury Behavior and Contamination in Soil Profiles in Mun River Basin, Northeast Thailand

Author

Listed:
  • Rui Qu

    (Institute of Earth Sciences, China University of Geosciences (Beijing), Beijing 100083, China)

  • Guilin Han

    (Institute of Earth Sciences, China University of Geosciences (Beijing), Beijing 100083, China)

  • Man Liu

    (Institute of Earth Sciences, China University of Geosciences (Beijing), Beijing 100083, China)

  • Xiaoqiang Li

    (Institute of Earth Sciences, China University of Geosciences (Beijing), Beijing 100083, China)

Abstract

To determine the geochemical characteristics and contamination of soil mercury in the Mun River basin, northeast Thailand, the vertical mercury distribution patterns and mercury contamination levels in six soil profiles under different land uses are studied. A total of 240 soil samples collected from agricultural land, abandoned agricultural land, and woodland were analyzed by an RA-915M mercury analyzer to determine the total mercury (THg) content, which ranged from 0.13 to 69.40 μg∙kg −1 in the study area. In the soil cultivation layer (0–30 cm), the average content of THg in the woodland (15.89 μg∙kg −1 ) and the agricultural land (13.48 μg∙kg −1 ) were higher than that in the abandoned agricultural land (4.08 μg∙kg −1 ), indicating that the plants or crops could increase the content of mercury in the surface soil layer. The total organic carbon (TOC) and iron content with high positive correlations with the THg content significantly contributed to the adsorption of soil mercury. Moreover, a higher pH value in the soil and a finer grain size in soil texture can be beneficial for the enrichment of mercury. A geoaccumulation index was used to evaluate the contamination of mercury, showing that this area had a slight contamination, and a few soil sites were moderate contamination.

Suggested Citation

  • Rui Qu & Guilin Han & Man Liu & Xiaoqiang Li, 2019. "The Mercury Behavior and Contamination in Soil Profiles in Mun River Basin, Northeast Thailand," IJERPH, MDPI, vol. 16(21), pages 1-16, October.
    • Handle: RePEc:gam:jijerp:v:16:y:2019:i:21:p:4131-:d:280568
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    References listed on IDEAS

    as
    1. Yanzhuo Liu & Shanshan Song & Chunjuan Bi & Junli Zhao & Di Xi & Ziqi Su, 2019. "Occurrence, Distribution and Risk Assessment of Mercury in Multimedia of Soil-Dust-Plants in Shanghai, China," IJERPH, MDPI, vol. 16(17), pages 1-19, August.
    2. Zhonghe Zhao & Gaohuan Liu & Qingsheng Liu & Chong Huang & He Li, 2018. "Studies on the Spatiotemporal Variability of River Water Quality and Its Relationships with Soil and Precipitation: A Case Study of the Mun River Basin in Thailand," IJERPH, MDPI, vol. 15(11), pages 1-19, November.
    3. Zhonghe Zhao & Gaohuan Liu & Qingsheng Liu & Chong Huang & He Li & Chunsheng Wu, 2018. "Distribution Characteristics and Seasonal Variation of Soil Nutrients in the Mun River Basin, Thailand," IJERPH, MDPI, vol. 15(9), pages 1-18, August.
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    Cited by:

    1. Rui Qu & Guilin Han & Man Liu & Kunhua Yang & Xiaoqiang Li & Jinke Liu, 2020. "Fe, Rather Than Soil Organic Matter, as a Controlling Factor of Hg Distribution in Subsurface Forest Soil in an Iron Mining Area," IJERPH, MDPI, vol. 17(1), pages 1-13, January.
    2. Man Liu & Guilin Han & Xiaoqiang Li & Shitong Zhang & Wenxiang Zhou & Qian Zhang, 2020. "Effects of Soil Properties on K Factor in the Granite and Limestone Regions of China," IJERPH, MDPI, vol. 17(3), pages 1-13, January.
    3. Wenxiang Zhou & Guilin Han & Man Liu & Chao Song & Xiaoqiang Li & Fairda Malem, 2020. "Vertical Distribution and Controlling Factors Exploration of Sc, V, Co, Ni, Mo and Ba in Six Soil Profiles of The Mun River Basin, Northeast Thailand," IJERPH, MDPI, vol. 17(5), pages 1-14, March.

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