Assessment of Human Health Risk of Chromium and Nitrate Pollution in Groundwater and Soil of the Matanza-Riachuelo River Basin, Argentina

2021 ◽  
Author(s):  
Elina Ceballos ◽  
Sabrina Dubny ◽  
Natalia Othax ◽  
María E. Zabala ◽  
Fabio Peluso
Keyword(s):  
Health Risk ◽  
Human Health ◽  
River Basin ◽  
Human Health Risk ◽  
Nitrate Pollution

scholarly journals The analysis of groundwater nitrate pollution and health risk assessment in Rural Areas of Yantai,China

2020 ◽  
Author(s):  
Guimei Yu ◽  
Jiu Wang ◽  
Lei Liu ◽  
Yun Li ◽  
Yi Zhang ◽  
...  
Keyword(s):  
Drinking Water ◽  
Health Risk ◽  
Human Health ◽  
Rural Areas ◽  
Human Health Risk ◽  
Nitrate Pollution ◽  
Total Hardness ◽  
Nitrate Content ◽  
Skin Contact ◽  
Risk Of Exposure

Abstract Background:Nitrate is one of the most common chemical contaminants of groundwater, and it is an important unqualified factor of rural groundwater in Yantai. In order to assess the risk of exposure to drinking water nitrate for adults and juveniles, in recent years, we monitored the nitrate concentrations in rural drinking water,a model was also used to assess the human health risk of nitrate pollution in groundwater. Methods: From the year 2015 to 2018, the drinking water in rural areas of Yantai was tested according to the "Sanitary Standard for Drinking Water" (GB5749-2006). The principal component analysis was used to analyze the relationship between groundwater chemicals and nitrate. The model was used to assess human health risks of groundwater nitrate through the drinking water and skin contact. Results: A total of 2348 samples were tested during the year 2015-2018.Nitrate and total dissolved solids, total hardness, chloride are all relevant, the above indicators may come from the same source of pollution; The median nitrate content (CEXP50) was 17.8 mg / L; the risk of exposure in each group was ranked as: Juveniles > Adult female > Adult male;the median health risk (HQ50) for minors and adults exceed 1. Conclusions:The concentrations of nitrate is stable and does not change over time.The high concentration of nitrate in rural areas of Yantai may be the result of the interaction of fertilizers and geological factors. The risk of exposure to nitrate in juveniles and adults is above the limit, so it is necessary to be on the alert for the high levels of nitrate.

The analysis of groundwater nitrate pollution and health risk assessment in Rural Areas of Yantai

2020 ◽  
Author(s):  
Guimei Yu ◽  
Song song Wang ◽  
Jiu Wang ◽  
Lei Liu ◽  
Yun Li ◽  
...  
Keyword(s):  
Drinking Water ◽  
Health Risk ◽  
Human Health ◽  
Rural Areas ◽  
Human Health Risk ◽  
Nitrate Pollution ◽  
Total Hardness ◽  
Nitrate Content ◽  
Skin Contact ◽  
Risk Of Exposure

Abstract Background: Nitrate is one of the most common chemical contaminants of groundwater, and it is an important unqualified factor of rural groundwater in Yantai. In order to assess the risk of exposure to drinking water nitrate for adults and juveniles, in recent years, we monitored the nitrate concentrations in rural drinking water, the HHRA model was also used to assess the human health risk of nitrate pollution in groundwater. Methods : From the year 2015 to 2018, the drinking water in rural areas of Yantai was tested according to the "Sanitary Standard for Drinking Water" (GB5749-2006). The principal component analysis was used to analyze the relationship between groundwater chemicals and nitrate. The HHRA model was used to assess human health risks of groundwater nitrate through the drinking water and skin contact. Results : A total of 2348 samples were tested during the year 2015-2018.Nitrate and total dissolved solids, total hardness, chloride are all relevant, the above indicators may come from the same source of pollution; The median nitrate content (C EXP50 ) was 17.8 mg / L; the C EXP95 was 53.4 mg / L; the risk of exposure in each group was ranked as: Juveniles > Adult female > Adult male;hazard quotient HQ 50 and HQ 95 for minors and adults exceed 1. Conclusions :The concentrations of nitrate is stable and does not change over time.The high concentration of nitrate in rural areas of Yantai may be the result of the interaction of fertilizers and geological factors. The risk of exposure to nitrate in juveniles and adults is above the limit, and HQ is over 1, so it is necessary to be on the alert for the high levels of nitrate.

Health risk assessment of nitrate pollution in shallow groundwater: a case study in Changchun New District, China

2019 ◽  
pp. 45-58 ◽  
Author(s):  
Hui Tian ◽  
Xiujuan Liang ◽  
Yan Gong ◽  
Zhuang Kang ◽  
Hongtao Jin
Keyword(s):  
Risk Assessment ◽  
Health Risk ◽  
Human Health ◽  
Health Risk Assessment ◽  
Health Risks ◽  
Human Health Risk ◽  
Nitrate Pollution ◽  
Assessment Model ◽  
Potential Health ◽  
Skin Contact

High concentrations of nitrate in groundwater pose a threat to human health. To quantify groundwater nitrate pollution in China's Changchun New District and evaluate its human health risks, 98 groundwater samples were collected and analyzed. The spatial distribution of groundwater chemical components was variable with concentrations descending from TDS > HCO3− > Ca2+ > NO3− > SO42- > Na+ > Cl− > Mg2+ > K+ > NO2− > NH4+. Notably, NO3− concentrations ranged from 0.02–492.72 mg/L and averaged 98.62 mg/L. Over 50% of samples exceeded the Quality Standard for Groundwater of China Class III N threshold (20 mg/L). Principal component analysis determined that NO3 contamination was primarily due to the excessive use of fertilizers in agriculture. A human health risk assessment model was used to assess the potential health risks of groundwater NO3− via drinking water and skin contact pathways. Approximately 90% of adults, 66% of children, and 45% of infants had acceptable health risks in the study area. NO3− exposure risk in the towns of Longjia and Xiyingcheng was the highest, while urban areas tended to have lower exposures. The health risks of residents, especially minors and infants, were concerned.

scholarly journals Vulnerability of Human Populations to Contamination from Petroleum Exploitation in the Napo River Basin: An Approach for Spatially Explicit Risk Assessment

2021 ◽  
Vol 13 (16) ◽  
pp. 9230
Author(s):  
Carlos Iván Espinosa ◽  
Fabián Reyes-Bueno ◽  
María Isabel Ramírez ◽  
Ana Paulina Arévalo ◽  
Natalia Bailon-Moscoso ◽  
...  
Keyword(s):  
Risk Factors ◽  
Health Risk ◽  
Human Health ◽  
River Basin ◽  
Environmental Contamination ◽  
Spatial Model ◽  
Risk Model ◽  
Human Health Risk ◽  
Health Risk Factors ◽  
Contamination Risk

Background: contamination of aquatic ecosystems by oil spills associated with petroleum exploitation represents a serious problem of environmental contamination that can affect human health. We developed a spatial model of contamination risk in the Ecuadorian Amazon, and evaluated the model using independent datasets on environmental contamination and clinical indicators of human health risk factors. Methods: the spatial risk of contamination for the Napo River basin was based on the calculation of a friction surface and the accessibility of possible oil contamination. Human health was evaluated using peripheral blood samples from 256 individuals. We used monitoring data on contamination to validate the spatial model of contamination risk and analyzed whether the estimated risk explained the incidence of human health risk factors. Results: our risk model showed a significant association with actual contamination detected in the study area. According to our risk model, around 30% of the territory has some level of contamination. Risk of contamination was associated with an increasing mean incidence in risk factors for human health in resident populations, but elevated contamination risk was not a significant predictor of the incidence of selected health indicators; only the incidence of inflammation was significantly increased. Conclusions: a large proportion of the populations in the Napo River basin has high vulnerability to contamination from petroleum exploitation, and this contamination risk may be traced in some indicators of health risk. Closer examination of health risk factors is warranted, and our spatial model of contamination risk can inform the design and analysis of such studies, as well as risk mitigation and management. Our approach to building the model of contamination risk could be applied in other catchments where petroleum exploitation is contemplated.

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