title: Health risk assessment of metals in food crops and related soils amended with biogas slurry in Taihu Basin: perspective from field experiment.
abstract: A health risk assessment of food crops contaminated with heavy metals (Cu, Zn, Pb, As, Cd, and Cr) through the intake of cereals and vegetables grown from biogas slurry irrigated sites was conducted. In the vegetable soils and cereal soils, the concentrations of Zn, Pb, and Cd were far higher than Chinese agricultural standards. The pollution conditions of the aforementioned heavy metals varied with the seasons. Typically, the pollution was more serious in summer than in autumn. Furthermore, the accumulative properties of the heavy metals were different in the cereals and vegetables. In particular, Cu, Zn, and Pb tended to accumulate in rice with concentrations of 6.70, 36.58, and 4.14 mg kg(-1), respectively. Pb and Cd in cereals and vegetables exceeded the maximum permissible concentrations in China. The health risk assessment revealed that the daily intake (DI) and target hazard quotients (THQs) of Pb, As, and Cd in cereals and vegetables also exceeded the FAO/WHO limit. The results indicated that heavy metal contamination posed a severe health risk to local humans.
authors.affiliation: Jiangsu Provincial Academy of Environmental Science, 241 Fenghuang West Street, Nanjing, 210036, China, bianbo1@163.com.
authors.forename: Bo
authors.initials: B
authors.lastname: Bian
authors.forename: Hai
authors.initials: H
authors.lastname: suo Wu
authors.forename: Lin
authors.initials: L
authors.lastname: Lv
authors.forename: Yamin
authors.initials: Y
authors.lastname: Fan
authors.forename: Haiming
authors.initials: H
authors.lastname: Lu
mesh_terms: D000383:Agriculture; D056804:Biofuels; D002681:China; D018556:Crops, Agricultural / Q000737:chemistry*; D006801:Humans; D019216:Metals, Heavy / Q000032:analysis / Q000737:chemistry*; D018570:Risk Assessment; D012621:Seasons; D012987:Soil / Q000737:chemistry; D012989:Soil Pollutants / Q000032:analysis / Q000737:chemistry*; D014675:Vegetables
chemical_list: D056804:Biofuels; D019216:Metals, Heavy; D012987:Soil; D012989:Soil Pollutants