Evaluation of nitrate source in groundwater of southern part of North China Plain based on multi-isotope
来源期刊：中南大学学报(英文版)2015年第2期
论文作者：FANG Jing-jing(方晶晶) ZHOU Ai-guo(周爱国) MA Chuan-ming(马传明) LIU Cun-fu(刘存富) CAI He-sheng(蔡鹤生) GAN Yi-qun(甘义群) LIU Yun-de(刘运德)
文章页码：610 - 618
Key words：δ13CDOC; esophageal cancer; groundwater
Abstract: Nitrate pollution in groundwater is a serious water quality problem that increases the risk of developing various cancers. Groundwater is the most important water resource and supports a population of 5 million in Anyang area of the southern part of the North China Plain. Determining the source of nitrate pollution is the challenge in hydrology area due to the complex processes of migration and transformation. a new method is presented to determine the source of nitrogen pollution by combining the composition characteristics of stable carbon isotope in dissolved organic carbon in groundwater. The source of groundwater nitrate is dominated by agricultural fertilizers, as well as manure and wastewater. Mineralization, nitrification and mixing processes occur in the groundwater recharge area, whereas the confined groundwater area is dominated by denitrification processes.
FANG Jing-jing(方晶晶), ZHOU Ai-guo(周爱国), MA Chuan-ming(马传明), LIU Cun-fu(刘存富), CAI He-sheng(蔡鹤生), GAN Yi-qun(甘义群), LIU Yun-de(刘运德)
(School of Environmental Studies & State Key Laboratory of Biogeology and Environmental Geology,
China University of Geosciences, Wuhan 430074, China)
Abstract:Nitrate pollution in groundwater is a serious water quality problem that increases the risk of developing various cancers. Groundwater is the most important water resource and supports a population of 5 million in Anyang area of the southern part of the North China Plain. Determining the source of nitrate pollution is the challenge in hydrology area due to the complex processes of migration and transformation. a new method is presented to determine the source of nitrogen pollution by combining the composition characteristics of stable carbon isotope in dissolved organic carbon in groundwater. The source of groundwater nitrate is dominated by agricultural fertilizers, as well as manure and wastewater. Mineralization, nitrification and mixing processes occur in the groundwater recharge area, whereas the confined groundwater area is dominated by denitrification processes.
Key words:δ13CDOC; esophageal cancer; groundwater
