Health risk analysis of nitrate in groundwater in Shanxi Province, China: A case study of the Datong Basin

Abstract

In order to identify and effectively control the impact of NO3− pollution on human health, on the basis of investigation, sampling, analysis and testing, statistical analysis software (SPSS19), groundwater pollution analysis software, Nemera comprehensive index method, correlation analysis method and human health risk assessment model are applied for analysis and research. The results indicate that the groundwater in the study area is mainly Class II water, with overall good water quality. The main influencing factors for producing Class IV are NO3−, Fe, F− and SO42−. The use of agricultural fertilizers is the main source of NO3− exceeding standards in groundwater in this area. There are significant differences in the health hazards caused by NO3− pollution in groundwater among different populations, and infants and young children are more susceptible to nitrate pollution. The division of pollution areas and high-risk groups plays an important guiding role in preventing health risks. The new achievements will help people improve their awareness of risk prevention, caring for the environment, respecting nature and implementing precise policies, promoting society to step onto the track of scientific and healthy development. HIGHLIGHTS Scientific evaluation of groundwater quality was conducted and the main factors affecting water quality were analyzed.; Scientific evaluation was conducted on NO3− pollution in the research area and the main sources of NO3− were identified.; The significant differences in the health hazards of NO3− pollution were identified.; The research results have an important guiding role in preventing health risks.;

Keywords

• china
• fertilizer overuse
• hhra
• nitrate pollution
• shallow groundwater