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+, Mg2+, 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.
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Acknowledgments
This study was supported by National Natural Science Foundation of China (Nos. 41372245; 41272251). Authors thank Cheng Qian (University of Nevada, Reno) for his help in English.
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He, X., Liu, Z., Qian, J. et al. Distribution of Nitrate in Different Aquifers in the Urban District of Zhanjiang, China. Bull Environ Contam Toxicol 97, 279–285 (2016). https://doi.org/10.1007/s00128-016-1822-7
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DOI: https://doi.org/10.1007/s00128-016-1822-7