title: Accumulation and interaction of fluoride and cadmium in the soil-wheat plant system from the wastewater irrigated soil of an oasis region in northwest China.
abstract: Contamination of agricultural soil with high concentrations of fluorine (F) and cadmium (Cd) have raised significant concerns regarding their impacts on human health but the relationship between F and Cd in soil-wheat plant system in an oasis region has not been investigated. This paper aims to study the accumulation and interaction of F and total Cd in the soil-wheat plant system while considering the potential risks of F and Cd to human health. Soil samples were collected from wastewater-irrigated oasis regions, Dongdagou and Xidagou. The concentrations of total F (FT) and Cd in soils from the Dongdagou and Xidagou stream basins were higher than those in uncontaminated soils (F=270.25mgkg-1, Cd=0.10mgkg-1). Water-soluble F (FW) and FTcontributed to F concentrations in underground parts of wheat when the samples were collected from Dongdagou, however, F in aboveground parts may be mainly influenced by atmospheric F. The main source of F in wheat plants collected from the Xidagou site may be mainly controlled by atmospheric F, including aboveground and underground parts. Soils in the studied region pose a potentially severe health risk for humans via bioaccumulation of toxic metals through the food chain, and therefore, are not suitable for planting wheat meant for human consumption. Cd had a significantly negative effect on F accumulation in wheat root from Dongdagou (P<0.01). This field study provided F-Cd interactions that occur in soils from an oasis region at environmentally relevant concentrations.
authors.affiliation: Key Laboratory for Environmental Pollution Prediction and Control, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, Gansu Province, China; Key Laboratory of Western China's Environmental Systems (Ministry of Education), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China.
authors.forename: Yepu
authors.initials: Y
authors.lastname: Li
authors.affiliation: Key Laboratory for Environmental Pollution Prediction and Control, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, Gansu Province, China; Key Laboratory of Western China's Environmental Systems (Ministry of Education), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China. Electronic address: wangshengl@lzu.edu.cn.
authors.forename: Shengli
authors.initials: S
authors.lastname: Wang
authors.affiliation: Department of Chemistry and Biology, Ryerson University, Toronto M5B2K3, Canada.
authors.forename: Daniel
authors.initials: D
authors.lastname: Prete
authors.affiliation: Key Laboratory for Environmental Pollution Prediction and Control, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, Gansu Province, China; Key Laboratory of Western China's Environmental Systems (Ministry of Education), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China.
authors.forename: Suyin
authors.initials: S
authors.lastname: Xue
authors.affiliation: Key Laboratory for Environmental Pollution Prediction and Control, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, Gansu Province, China.
authors.forename: Zhongren
authors.initials: Z
authors.lastname: Nan
authors.affiliation: Key Laboratory for Environmental Pollution Prediction and Control, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, Gansu Province, China.
authors.forename: Fei
authors.initials: F
authors.lastname: Zang
authors.affiliation: Key Laboratory for Environmental Pollution Prediction and Control, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, Gansu Province, China.
authors.forename: Qian
authors.initials: Q
authors.lastname: Zhang
mesh_terms: D057914:Agricultural Irrigation; D002104:Cadmium / Q000032:analysis*; D002681:China; D005459:Fluorides / Q000032:analysis*; D012987:Soil / Q000737:chemistry*; D012989:Soil Pollutants / Q000032:analysis*; D014908:Triticum / Q000737:chemistry*; D062065:Wastewater
chemical_list: D002104:Cadmium; D005459:Fluorides; D012987:Soil; D012989:Soil Pollutants; D062065:Wastewater
keywords: Atmospheric F; Field survey; Health risk assessment; Sierozem; Water soluble F