Abstract：Hydrogeochemistry and nitrate pollution characteristics in surface water and groundwater of the Hun River basin were investigated by analyzing concentrations of the main ions and nitrogen. The results showed that the water types of the surface water changed from Ca-HCO3 to Ca-SO4 along the river while it varied from Ca-HCO3、Ca-SO4 to Ca-Cl in shallow groundwater. Concentrations of NO3--N in the surface water were increased to 6.13mg/L from the initial 1.06mg/L. However, the NO2--N and NH4+-N were only detected in the middle and lower Hun River. These results indicated that the surface water was significantly affected by anthropogenic activities. Concentration of NO3--N in groundwater was evidently higher than that in surface water. There were no significant differences of NO3--N content in surface water samples of the four land-use types (forest land, dry land, urban land and paddy field). However, significant difference for NO3--N levels in shallow groundwater were found between dry land and paddy field. Serious pollution of NO3--N, NO2--N and NH4+-N were found in shallow groundwater. In general, most of shallow groundwater samples showed medium water quality. The denitrification might exist in the shallow groundwater of the middle and lower areas based on variations of ORP, DO, Cl- and nitrate concentrations showing the content of NO3--N was decreased gradually and increase of NO2--N concents.
张亚丽, 张依章, 张远, 孟伟, 刘相超, 万峻. 浑河流域地表水和地下水氮污染特征研究[J]. 中国环境科学, 2014, 34(1): 170-177.
ZHANG Ya-Li, ZHANG Yi-Zhang, ZHANG Yuan, MENG Wei, LIU Xiang-Chao, WAN Jun. Characteristics of nitrate in surface water and groundwater in the Hun River Basin. CHINA ENVIRONMENTAL SCIENCECE, 2014, 34(1): 170-177.
