title: Distribution of Nitrate in Different Aquifers in the Urban District of Zhanjiang, China.
abstract: The study of NO3 (-) contamination in groundwater is becoming increasingly significant as high concentrations of NO3 (-) in groundwater can do damage to public health. Nitrate pollution in the shallow, middle-deep and deep aquifers in the urban district of Zhanjiang was studied using the ordinary Kriging interpolation method combined with hydrochemical and correlation analyses in 2011. The results showed NO3 (-) pollution was present in the shallow groundwater, with average concentrations of 47.43 mg/L and standard deviation of 50.92. Nitrate concentrations were lower in middle-deep and deep aquifers, with average concentrations of 2.36, 0.80 mg/L, and standard deviation of 6.23, 0.93, respectively. Nitrate was correlated with Na(+) + K(+), Mg(2+), Cl(-) and SO4 (2-) in the shallow aquifer, and the spatial distributions of NO3 (-) exhibited a same pattern with TDS in the shallow aquifer, the NO3 (-) pollution in the middle-deep and deep aquifers is less serious.
authors.affiliation: School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, China.
authors.forename: Xiaorui
authors.initials: X
authors.lastname: He
authors.affiliation: Center of Water Resources and Environment, Sun Yat-sen University, Guangzhou, 510275, China.
authors.forename: Zufa
authors.initials: Z
authors.lastname: Liu
authors.affiliation: School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, China. qianjiazhong@hfut.edu.cn.
authors.forename: Jiazhong
authors.initials: J
authors.lastname: Qian
authors.affiliation: School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, 230009, China.
authors.forename: Weidong
authors.initials: W
authors.lastname: Zhao
authors.affiliation: School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei, 230009, China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Liu
mesh_terms: D002681:China; D004784:Environmental Monitoring; D060587:Groundwater / Q000032:analysis / Q000737:chemistry*; D009566:Nitrates / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D009566:Nitrates; D014874:Water Pollutants, Chemical
keywords: Distribution; Groundwater quality; Nitrate; Pollution