title: Field study on the uptake and translocation of perfluoroalkyl acids (PFAAs) by wheat (Triticum aestivum L.) grown in biosolids-amended soils.
abstract: Field experiments were performed to evaluate the uptake and translocation of perfluoroalkyl acids (PFAAs) in wheat (Triticum aestivum L.) grown in soils amended with biosolids at different rates. Nine perfluorocarboxylic acids (PFCAs) and three perfluorosulfonic acids (PFSAs) were detected in the soils and wheat tissues. Total concentrations of PFAAs in the soils and wheat root, straw, husk and grain increased with increasing application of biosolids. PFCA concentrations in grain increased logarithmically with increasing PFCA concentrations in soils (P < 0.01) while PFSAs in grain were correlated linearly with PFSA concentrations in soils (P < 0.01), indicating that PFCAs and PFSAs may have different transport pathways from soil to grain. While no significant correlation was found between the root concentration factors (Croot/Csoil) and PFAA carbon chain length, the transfer factors from roots to straws (Cstraw/Croot) and from straws to grains (Cgrain/Cstraw) correlated negatively with PFAA carbon chain length (P < 0.01).
authors.affiliation: State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. Electronic address: bwen@rcees.ac.cn.
authors.forename: Bei
authors.initials: B
authors.lastname: Wen
authors.forename: Longfei
authors.initials: L
authors.lastname: Li
authors.forename: Hongna
authors.initials: H
authors.lastname: Zhang
authors.forename: Yibing
authors.initials: Y
authors.lastname: Ma
authors.forename: Xiao-Quan
authors.initials: XQ
authors.lastname: Shan
authors.forename: Shuzhen
authors.initials: S
authors.lastname: Zhang
mesh_terms: D000383:Agriculture; D005466:Fluorocarbons / Q000032:analysis / Q000378:metabolism*; D018517:Plant Roots / Q000378:metabolism; D012987:Soil / Q000737:chemistry; D012989:Soil Pollutants / Q000032:analysis / Q000378:metabolism*; D014908:Triticum / Q000737:chemistry / Q000378:metabolism*; D014865:Waste Disposal, Fluid
chemical_list: D005466:Fluorocarbons; D012987:Soil; D012989:Soil Pollutants
keywords: Biosolid; Field study; Perfluoroalkyl acids; Translocation; Uptake; Wheat