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| Spatial distribution and influencing factors of nitrate content in groundwater of alluvial-pluvial fan of Hutuo River |
| Received:November 05, 2015 |
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| KeyWord:nitrate;groundwater;pollution profile;spatial distribution;alluvial-pluvial fan of Hutuo River |
| Author Name | Affiliation | E-mail | | LIU Yan | State Key Laboratory of Environmental Criteria and Risk Assessment, State Environmental Protection Key Laboratory of Drinking Water Source Protection, Chinese Research Academy of Environmental Sciences, Beijing 100012, China | | | QIAO Xiao-cui | State Key Laboratory of Environmental Criteria and Risk Assessment, State Environmental Protection Key Laboratory of Drinking Water Source Protection, Chinese Research Academy of Environmental Sciences, Beijing 100012, China | | | JIANG Qiu-feng | State Key Laboratory of Environmental Criteria and Risk Assessment, State Environmental Protection Key Laboratory of Drinking Water Source Protection, Chinese Research Academy of Environmental Sciences, Beijing 100012, China | | | CHANG Sheng | State Key Laboratory of Environmental Criteria and Risk Assessment, State Environmental Protection Key Laboratory of Drinking Water Source Protection, Chinese Research Academy of Environmental Sciences, Beijing 100012, China | | | ZHU Yuan-yuan | State Key Laboratory of Environmental Criteria and Risk Assessment, State Environmental Protection Key Laboratory of Drinking Water Source Protection, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
Department of Environmental Engineering, School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China | | | WANG Shan-jun | State Key Laboratory of Environmental Criteria and Risk Assessment, State Environmental Protection Key Laboratory of Drinking Water Source Protection, Chinese Research Academy of Environmental Sciences, Beijing 100012, China | | | ZHENG Bing-hui | State Key Laboratory of Environmental Criteria and Risk Assessment, State Environmental Protection Key Laboratory of Drinking Water Source Protection, Chinese Research Academy of Environmental Sciences, Beijing 100012, China | zhengbh@craes.org.cn |
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| Abstract: |
| In order to identify the contamination profiles and spatial distribution of nitrate in the North China Plain, 115 groundwater samples,collected from Hutuo River pluvial fan in Shijiazhuang City, Hebei Province, were analyzed according to the parameters listed in the Quality Standard for Ground Water(GB 14848—1993). Results indicated that the water quality was generally poor. The 64.35% of total samples only met the Class V standards. Nitrate and hardness were the main failed indicators. The sampling sites with poor water quality were mainly located in the two groundwater units in the northwest area. The nitrate concentrations ranged from 0.24 to 440 mg·L-1, with the maximum and the average concentrations being 22 and 3 times higher than the Class Ⅲ standard value, respectively. The nitrate concentrations spatially decreased from the north-west to the south-east and from shallow to deep stratum of the research area. Hydrogeological conditions had an important effect on the distribution of nitrate in groundwater. In addition, the type and distribution of pollution sources also had great contributions. Correlation analysis between chloridion and nitrate, and between total hardness and nitrate indicated that nitrate in the two units of the north-west area came from the discharges of domestic wastewater and livestock and poultry breeding wastewater from the point sources, while nitrate in the other two units located in the south-east area was mainly resulted from the agricultural non-point sources. |
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