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Risk assessment and source identification of coastal groundwater nitrate in northern China using dual nitrate isotopes combined with Bayesian mixing model
Wen, Xiaohu1,2; Feng, Qi1,2; Lu, Jian3; Wu, Jun4; Wu, Min1,2; Guo, Xiaoyan1,2
2018
Source PublicationHUMAN AND ECOLOGICAL RISK ASSESSMENT
Volume24Issue:4Pages:1043-1057
SubtypeArticle
AbstractDue to the intensive and complicated human activities, the identification of nitrate pollution source of coastal aquifer is usually a challenge. This study firstly adopted stable isotope technique and stable isotope analysis in R (SIAR) model to identify the nitrate sources and contribution proportions of different sources in typical coastal groundwater of northern China. The results showed that about 91.5% of the groundwater samples illustrated significantly high nitrate concentrations exceeding the maximum WHO drinking water standard (50mg/l), reflecting the high risk of groundwater nitrate pollution in the coastal area. A total of 57 sampling sites were classified into three groups according to hierarchical cluster analysis (HCA). The N-15-NO3- and O-18-NO3- values of groundwater samples from Group C (including nine samples) were much higher than those from Group A (including 40 samples) and Group B (including 8 samples). SIAR results showed that NH4+ fertilizer was the dominant nitrate source for groundwater samples of Groups A and B while manure and sewage (M&S) served as dominant source for Group C. This study provided essential information on the high risk and pollution sources of coastal groundwater nitrate of northern China.
KeywordGroundwater Nitrate Pollution Source Identification Dual Nitrate Isotopes Hierarchical Cluster Analysis Stable Isotope Analysis In r Model
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
WOS KeywordAQUIFER ; CONTAMINATION ; ATTENUATION ; POLLUTION ; WATER ; FATE ; AREA ; DELTA-N-15-NO3 ; DELTA-O-18-NO3 ; TRANSFORMATION
Indexed BySCI
Language英语
WOS Research AreaBiodiversity & Conservation ; Environmental Sciences & Ecology
WOS SubjectBiodiversity Conservation ; Environmental Sciences
WOS IDWOS:000426919700014
Citation statistics
Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/6433
Collection青海盐湖研究所知识仓储
盐湖地质与环境实验室
Affiliation1.Chinese Acad Sci, Key Lab Ecohydrol Inland River Basin, Lanzhou, Gansu, Peoples R China
2.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou, Gansu, Peoples R China
3.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Processes & Ecol Remedia, Yantai 264003, Shandong, Peoples R China
4.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining, Qinghai, Peoples R China
Recommended Citation
GB/T 7714
Wen, Xiaohu,Feng, Qi,Lu, Jian,et al. Risk assessment and source identification of coastal groundwater nitrate in northern China using dual nitrate isotopes combined with Bayesian mixing model[J]. HUMAN AND ECOLOGICAL RISK ASSESSMENT,2018,24(4):1043-1057.
APA Wen, Xiaohu,Feng, Qi,Lu, Jian,Wu, Jun,Wu, Min,&Guo, Xiaoyan.(2018).Risk assessment and source identification of coastal groundwater nitrate in northern China using dual nitrate isotopes combined with Bayesian mixing model.HUMAN AND ECOLOGICAL RISK ASSESSMENT,24(4),1043-1057.
MLA Wen, Xiaohu,et al."Risk assessment and source identification of coastal groundwater nitrate in northern China using dual nitrate isotopes combined with Bayesian mixing model".HUMAN AND ECOLOGICAL RISK ASSESSMENT 24.4(2018):1043-1057.
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