Health risk assessment of groundwater nitrate contamination: a case study of a typical karst hydrogeological unit in East China

Gao, Shi; Li, Changsuo; Jia, Chengzao; Zhang, Hailin; Qin, Guan; Wu, Xiancang; Wang, Jinxiao; Lv, Meng

doi:10.1007/s11356-019-07075-w

Cited by 70 publications

(26 citation statements)

References 27 publications

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“…Excessive nitrate intake through groundwater can result in adverse biological problems, such as methemoglobinemia, which is also known as blue baby syndrome, causes infant mortality, hypertension, thyroid disorders, goiter, hives, severe cyanosis, cytogenetic defects, congenital malformations, and headaches 49 , 65 , 78 – 82 . However, in many parts of the globe where a significant populace depends entirely on groundwater resources for drinking without pre-examination of safety problems, the non-carcinogenic health risk of NO 3 − in drinking water becomes a serious issue 18 , 65 , 78 , 79 , 81 , 82 . In northern India, a detailed study done 74 and assessed the human health risk of nitrate.…”

Section: Resultsmentioning

confidence: 99%

“…As a result of the prolonged ingestion of groundwater nitrate, serious health issues are encountered in the different parts of the world. Thus, nitrate exposure-related health risk assessment research is extensively studied in different countries such as China 15 – 18 , Pakistan 19 , Iran 20 , 21 , Mexico 22 and India 3 , 23 – 25 .…”

Section: Introductionmentioning

confidence: 99%

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Anthropogenic nitrate in groundwater and its health risks in the view of background concentration in a semi arid area of Rajasthan, India

Rahman

Mondal

Tiwari

2021

Sci Rep

114

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An increased nitrate (NO3−) concentration in groundwater has been a rising issue on a global scale in recent years. Different consumption mechanisms clearly illustrate the adverse effects on human health. The goal of this present study is to assess the natural and anthropogenic NO3− concentrations in groundwater in a semi arid area of Rajasthan and its related risks to human health in the different groups of ages such as children, males, and females. We have found that most of the samples (n = 90) were influenced by anthropogenic activities. The background level of NO3− had been estimated as 7.2 mg/L using a probabilistic approach. About 93% of nitrate samples exceeded the background limit, while 28% of the samples were beyond the permissible limit of 45 mg/L as per the BIS limits. The results show that the oral exposure of nitrate was very high as compare to dermal contact. With regard to the non-carcinogenic health risk, the total Hazard Index (HITotal) values of groundwater nitrate were an average of 0.895 for males, 1.058 for females, and 1.214 for children. The nitrate health risk assessment shows that about 38%, 46%, and 49% of the samples constitute the non-carcinogenic health risk to males, females, and children, respectively. Children were found to be more prone to health risks due to the potential exposure to groundwater nitrate.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Anthropogenic nitrate in groundwater and its health risks in the view of background concentration in a semi arid area of Rajasthan, India

Rahman

Mondal

Tiwari

2021

Sci Rep

114

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“…In each phase, 40 days operation was performed to enable the system performance and microbial community structure to reach stabilization. Specifically, a NO influent concentration of 10-30 mg N/L was adopted since this range is close to the typical NO concentration in real contaminated groundwater[21][22][23], and is the representative concentration range extensively investigated in H 2 -based MBfRs for NO 3 − removal [14,20,24-26]. 2.4.…”

mentioning

confidence: 99%

Nitrate Removal and Dynamics of Microbial Community of A Hydrogen-Based Membrane Biofilm Reactor at Diverse Nitrate Loadings and Distances from Hydrogen Supply End

Jiang

Zhang

Yuan

et al. 2020

Water

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The back-diffusion of inactive gases severely inhibits the hydrogen (H2) delivery rate of the close-end operated hydrogen-based membrane biofilm reactor (H2-based MBfR). Nevertheless, less is known about the response of microbial communities in H2-based MBfR to the impact of the gases’ back-diffusion. In this research, the denitrification performance and microbial dynamics were studied in a H2-based MBfR operated at close-end mode with a fixed H2 pressure of 0.04 MPa and fed with nitrate (NO3−) containing influent. Results of single-factor and microsensor measurement experiments indicate that the H2 availability was the decisive factor that limits NO3− removal at the influent NO3− concentration of 30 mg N/L. High-throughput sequencing results revealed that (1) the increase of NO3− loading from 10 to 20–30 mg N/L resulted in the shift of dominant functional bacteria from Dechloromonas to Hydrogenophaga in the biofilm; (2) excessive NO3− loading led to the declined relative abundance of Hydrogenophaga and basic metabolic pathways as well as counts of most denitrifying enzyme genes; and (3) in most cases, the decreased quantity of N metabolism-related functional bacteria and genes with increasing distance from the H2 supply end corroborates that the microbial community structure in H2-based MBfR was significantly impacted by the gases’ back-diffusion.

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“…Besides, the measured values in several months were relatively high, which might bring harm. For example, the detected concentration of NH 3 -N was greater than 30 mg/L for 10 months and even reached 60 mg/L in January 2011, which may lead to the intestinal diseases as the proliferation of pathogenic microorganisms in the water (Yin et al, 2019;Gao et al, 2020). What's more, F À concentrations in water samples from January to May 2012 were all greater than 1 mg/L, exceeding the safe concentration in drinking water (0.5-1 mg/L), which would lead to the disorder metabolism of Ca and P, thus adversely affecting the skeletal development of teenagers (Fallahzadeh et al, 2017).…”

Section: Application and Analysismentioning

confidence: 99%

Emergy evaluation of human health losses for water environmental pollution

Xiao-ling

et al. 2021

Water Policy

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Water pollution in China has not only become one of the most vital factors impeding the social-economic development but also threatening people's health. In this study, Kaifeng was considered as an example, and the human health risk of drinking water pathway from 2010 to 2017 was evaluated on the basis of drinking water hygiene standards and the human health risk assessment model (HHRA). Besides, the human health loss caused by water pollution was quantitatively evaluated through an emergy theory and analysis method. The results showed that the carcinogenic annual risk of carcinogenic pollutants ranged from 2.0 × 10−5 to 6.5 × 10−5, and the average health risk of non-carcinogenic pollutants was about 1.5 × 10−8, but the difference between different pollutants was obvious. Affected by water quality, social-economic development, Medicare, etc., the value of human health loss ranked at the top in 2016 with 8.73 × 1018 sej, equivalent to 9.33 million RMB, while in other years, it was around 6 × 1018 sej. It is indicated that among the factors, water quality is the direct inducement of healthy loss, the socio-economic development is the leading force effecting the value, and the Medicare is the final determinant of the public burden.

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Health risk assessment of groundwater nitrate contamination: a case study of a typical karst hydrogeological unit in East China

Cited by 70 publications

References 27 publications

Anthropogenic nitrate in groundwater and its health risks in the view of background concentration in a semi arid area of Rajasthan, India

Anthropogenic nitrate in groundwater and its health risks in the view of background concentration in a semi arid area of Rajasthan, India

Nitrate Removal and Dynamics of Microbial Community of A Hydrogen-Based Membrane Biofilm Reactor at Diverse Nitrate Loadings and Distances from Hydrogen Supply End

Emergy evaluation of human health losses for water environmental pollution

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