Agricultural activities impact on soil and sediment fluorine and perfluorinated compounds in an endemic fluorosis area. 2021

Chun-Dan Gan, and Zhi-Wei Gan, and Si-Fan Cui, and Rui-Jun Fan, and Yuan-Zhou Fu, and Mu-Yi Peng, and Jin-Yan Yang
College of Architecture and Environment, Sichuan University, Chengdu 610065, China; Yibin Institute of Industrial Technology, Sichuan University Yibin Park, Yibin 644000, China.

Perfluorinated compounds (PFCs) are organo-fluorine compounds which have been identified at significant levels in soils due to their widespread usage in industrial and commercial applications. However, few studies are available regarding the occurrence of PFCs in the environment of endemic fluorosis areas. To address the issue, soils collected from an endemic fluorosis area of southwestern China were analyzed for the distribution of fluorine and 21 kinds of PFCs. The average water-soluble fluorine concentration in cultivated soil (4.87 mg kg-1) was significantly higher than that in uncultivated soil (3.15 mg kg-1), which mainly ascribed to the utilization of fluorine-enriched fertilizers during agricultural practices. Concentrations of ΣPFCs in all soils ranged from 0.508 to 6.83 ng g-1, with an average of 2.81 ng g-1, dominated by perfluorononanoic acid (PFNA) and perfluorooctanoic acid (PFOA). Highest ΣPFCs was found in the soil samples collected from cropland with intensive agricultural activities. Long-chain PFCs, including four perfluoroalkylcarboxylic acids (PFCAs, C ≥ 8) and one perfluoroalkylsulfonic acids (PFSAs) (perfluorooctane sulfonate (PFOS), C8), exhibited high levels in soils, probably due to their higher hydrophobicity and lower water-solubility than short-chain PFCs. While in sediments, short-chain PFCAs were the dominant compounds. Based on correlation analysis, the relationship between total fluorine and PFCs was insignificant, and soil organic matter was a relevant factor affecting PFCs distribution in soils. This study is expected to present a more comprehensive information about fluorine contamination under the influence of agricultural activities in an endemic fluorosis area.

UI MeSH Term Description Entries

Related Publications

Chun-Dan Gan, and Zhi-Wei Gan, and Si-Fan Cui, and Rui-Jun Fan, and Yuan-Zhou Fu, and Mu-Yi Peng, and Jin-Yan Yang
January 1982, Minerva stomatologica,
Chun-Dan Gan, and Zhi-Wei Gan, and Si-Fan Cui, and Rui-Jun Fan, and Yuan-Zhou Fu, and Mu-Yi Peng, and Jin-Yan Yang
May 2020, Environmental research,
Chun-Dan Gan, and Zhi-Wei Gan, and Si-Fan Cui, and Rui-Jun Fan, and Yuan-Zhou Fu, and Mu-Yi Peng, and Jin-Yan Yang
January 1981, Minerva stomatologica,
Chun-Dan Gan, and Zhi-Wei Gan, and Si-Fan Cui, and Rui-Jun Fan, and Yuan-Zhou Fu, and Mu-Yi Peng, and Jin-Yan Yang
August 1993, Community dentistry and oral epidemiology,
Chun-Dan Gan, and Zhi-Wei Gan, and Si-Fan Cui, and Rui-Jun Fan, and Yuan-Zhou Fu, and Mu-Yi Peng, and Jin-Yan Yang
July 2011, Bulletin of environmental contamination and toxicology,
Chun-Dan Gan, and Zhi-Wei Gan, and Si-Fan Cui, and Rui-Jun Fan, and Yuan-Zhou Fu, and Mu-Yi Peng, and Jin-Yan Yang
August 1971, East African medical journal,
Chun-Dan Gan, and Zhi-Wei Gan, and Si-Fan Cui, and Rui-Jun Fan, and Yuan-Zhou Fu, and Mu-Yi Peng, and Jin-Yan Yang
September 1965, Panminerva medica,
Chun-Dan Gan, and Zhi-Wei Gan, and Si-Fan Cui, and Rui-Jun Fan, and Yuan-Zhou Fu, and Mu-Yi Peng, and Jin-Yan Yang
June 1946, Journal of dental research,
Chun-Dan Gan, and Zhi-Wei Gan, and Si-Fan Cui, and Rui-Jun Fan, and Yuan-Zhou Fu, and Mu-Yi Peng, and Jin-Yan Yang
October 1973, Lancet (London, England),
Chun-Dan Gan, and Zhi-Wei Gan, and Si-Fan Cui, and Rui-Jun Fan, and Yuan-Zhou Fu, and Mu-Yi Peng, and Jin-Yan Yang
February 2019, Chemosphere,
Copied contents to your clipboard!