title: Accumulation of heavy metal in scalp hair of people exposed in Beijing sewage discharge channel sewage irrigation area in Tianjin, China.
abstract: Heavy metal concentrations in soil, wheat, and scalp hair exposed to Beijing sewage discharge channel sewage irrigation area (BSIA) in Tianjin were studied to evaluate the influence of sewage irrigation. Results showed that the continuous application of wastewater has led to an accumulation of heavy metals in the soil, with 55.2 and 8.62% of soil samples accumulating Cd and Zn, respectively, at concentrations exceeding the permissible limits in China. Concentrations of heavy metals in wheat grain from BSIA were higher than these from the clean water irrigation area by 63.2% for Cd, 3.8% for Cu, 100% for Pb, 6.6% for Zn, and 326.7% for Cr. The heavy metal bioaccumulation factor (BAF) of wheat/soil in BSIA showed the following order: Zn > Cd > Cu > Pb > Cr. Interestingly, these accumulation of heavy metals in soil after sewage irrigation could increase the migration ability of heavy metals (particularly Zn and Cd) from soil to wheat. Mean concentrations of heavy metals in the hair of residents followed the decreasing trend of Zn > Cu > Pb > Cr > Cd, which were higher than the control area by 110.0% for Cd, 20.0% for Cu, 55.9% for Zn, 36.6% for Pb, and 64.6% for Cr. Concentrations of heavy metals in male human hair in BSIA were higher than those of females. And the concentrations of heavy metals except for Pb in human hair increased with their increasing ages. The heavy metal BAF values of wheat/soil in BSIA showed the trend of Zn (98.0057) > Pb (7.0162) > Cr (5.5788) > Cu (5.4853) > Cd (3.5584); heavy metals had obvious biological amplification from wheat to human hair. These results indicated that local population health was potentially exposed to the heavy metal risk via wheat consumption.
authors.affiliation: College of Urban and Environment Science, Tianjin Key Laboratory of water resource and water environment, Tianjin Normal University, Tianjin, 300387, China.
authors.forename: Zuwei
authors.initials: Z
authors.lastname: Wang
authors.affiliation: Land and Environment College, Shenyang Agricultural University, Shenyang, 110866, China.
authors.forename: Xiaoman
authors.initials: X
authors.lastname: Yu
authors.affiliation: College of Urban and Environment Science, Tianjin Key Laboratory of water resource and water environment, Tianjin Normal University, Tianjin, 300387, China.
authors.forename: Mingshuo
authors.initials: M
authors.lastname: Geng
authors.affiliation: College of Urban and Environment Science, Tianjin Key Laboratory of water resource and water environment, Tianjin Normal University, Tianjin, 300387, China.
authors.forename: Zilu
authors.initials: Z
authors.lastname: Wang
authors.affiliation: College of Urban and Environment Science, Tianjin Key Laboratory of water resource and water environment, Tianjin Normal University, Tianjin, 300387, China.
authors.forename: Qianqian
authors.initials: Q
authors.lastname: Wang
authors.affiliation: Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China. zengxf@iae.ac.cn.
authors.forename: Xiangfeng
authors.initials: X
authors.lastname: Zeng
mesh_terms: D000068476:Beijing; D002681:China; D004784:Environmental Monitoring; D006801:Humans; D019216:Metals, Heavy; D012535:Scalp / Q000737:chemistry; D012722:Sewage; D012987:Soil; D012989:Soil Pollutants
chemical_list: D019216:Metals, Heavy; D012722:Sewage; D012987:Soil; D012989:Soil Pollutants
keywords: Heavy metals accumulation; Soil-wheat-human hair system; Tianjin; Wastewater irrigation