4.7 Article

Vertical distribution of fluorine in farmland soil profiles around phosphorous chemical industry factories

期刊

出版社

SPRINGER HEIDELBERG
DOI: 10.1007/s11356-018-3647-x

关键词

Fluorine; Distribution; Farmland; Soil profile; Crops; Phosphorous chemical industry

资金

  1. Sichuan Science and Technology Program [2018HH0137]
  2. Open Research Foundation of Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Education, China
  3. Zhejiang Science and Technology Bureau [2018C02029, 2015C02011-3]

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High concentration of fluorine (F) in agricultural soils has got significant attention considering its impacts on human health, but little information was available about F distribution in farmland soil profiles around phosphorous chemical industry factories. In present study, farmland soil profiles and relevant medium samples were collected from farmlands around a main phosphorous chemical base in southwest China. At 0-100-cm profiles, concentrations of soil total F (Ft, 400.9-1612.0mgkg(-1)) and water soluble F (Fw, 3.4-26.0mgkg(-1)) decreased with profile depth in industrial areas. Industrial activities enhanced F concentration in soil mainly at 0-40-cm profiles. No disparity for both Ft and Fw distributions in paddy-dry land rotation field and dry land indicates short-term land utilization could not affect the F distribution in soil profiles. Correlation analysis showed soil organic matter and wind direction were important factors influencing the distribution of F in soil profiles. The shutdown of factory and government control of industrial emissions effectively decreased the ambient air F (Fa) concentrations in industrial areas. In where Fa and dustfall F concentrations were high, high soil Ft, Fw, and crop edible part F concentrations were found.

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