Human health risk assessment of uranium in drinking water sampled from drilled wells located in rural areas of the Lower Silesian region (Poland) / Ocena ryzyka zdrowotnego związanego z obecnością uranu w wodzie przeznaczonej do spożycia pobieranej z wierconych studni zlokalizowanych na obszarach wiejskich Dolnego Śląska (Polska)

Abstract Uranium concentrations in groundwater taken from private drilled wells have been never determined in Poland, implying a lack of available data to quantify the human exposure to U through drinking water consumption, especially in rural areas influenced by mining activities. The main aim of the study was the assessment of human health risk related to the consumption of well waters containing U, collected from selected rural areas of the Lower Silesian region (Poland). The random daytime (RDT) sampling method was applied to the collection of well waters from three control study areas (CSA): Mniszków (CSA-A), Stara Kamienica/M. Kamienica/Kopaniec (CSA-B) and Kletno (CSA-C). The analyses of RDT samples were performed by validated method based on inductively coupled plasma mass spectrometry (ICP-MS). Uranium concentration ranges in well waters and the estimated geometric means for individual control study areas were: 0.005-1.03 μg/L and 0.052 μg/L (CSA-A), 0.027-10.6 μg/L and 0.40 μg/L (CSA-B), and 0.006-27.1 μg/L and 0.38 μg/L (CSA-C). The average and individual chronic daily intakes (CDI) of U by drinking water pathway (adults/children) were in the ranges of: 0.0017-0.013/0.0052-0.040 μg · kg-1 · day-1 and 0.0002-0.90/0.0005-2.71 μg · kg-1 · day-1. The average %TDI and ranges of individual %TDI (adults/children) were: 0.17%/0.52% and 0.02-3.4%/0.05-10.3% (CSA-A), 1.3%/4.0% and 0.09-35%/0.27-106% (CSA-B), and 1.3%/3.8% and 0.02-90%/0.06-271% (CSA-C). The estimated average CDI values of U through well water are significantly lower than the TDI (1 μg · kg-1 · day-1), while for individual CDI values the contribution to the TDI can reach even 90% (adults) and 271% (children), indicating essential human health risk for children consuming well water from private drilled wells located in CSA-B and CSA-C (5.3% of total number of samples collected).

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

10.21203/rs.2.20392/v2 ◽

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.

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

10.21203/rs.2.20392/v1 ◽

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.

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Assessment of Availability and Human Health Risk Posed by Arsenic Contaminated Well Waters from Timis-Bega Area, Romania

Journal of Analytical Methods in Chemistry ◽

10.1155/2017/3037651 ◽

2017 ◽

Vol 2017 ◽

pp. 1-7 ◽

Cited By ~ 7

Author(s):

Marin Senila ◽

Erika Levei ◽

Oana Cadar ◽

Lacrimioara Ramona Senila ◽

Marius Roman ◽

...

Keyword(s):

Drinking Water ◽

Health Risk ◽

Human Health ◽

Water Samples ◽

Human Health Risk ◽

Water Sources ◽

Drinking Water Source ◽

Drinking Water Sources ◽

Guideline Value ◽

Well Waters

Mobilization of As from geological materials into ground and drinking water sources may represent an important threat to human health. The objective of this study was to assess the As concentration and availability in underground water used as drinking water sources. Water samples were collected from public and private wells in Timis-Bega area of Pannonian Basin, West Romania. Total-dissolved As measured after “classical” filtration of water samples was in the range of 0.10–168 μg L−1, thus exceeding the guideline value in majority of the samples. The aim of this study was also to assess the “truly dissolved” concentrations of As considered as available concentrations, in well waters, after passive sampling by Diffusive Gradients in Thin-films (DGT). The results showed that over 70% of total-dissolved As is in available forms. The obtained data were used to evaluate the risks of using the wells as drinking water source. Hazard quotients for ingestion and dermal pathways and hazard index (HI) for exposure to As were calculated. The HI values > 1 found that majority of samples indicated a health risk for local residents.

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