scholarly journals Distribution and Health Risk Assessment of Dissolved Metal in Surface and overlying water at the the Xiangjiang River in Southern China

2020 ◽  
Author(s):  
Zhifeng Huang ◽  
xingru zhao ◽  
Xiaocui Qiao ◽  
Chengyou Liu ◽  
Binghui Zheng
Keyword(s):  
Risk Assessment ◽  
Drinking Water ◽  
Health Risk ◽  
Health Risk Assessment ◽  
Metal Pollution ◽  
Carcinogenic Risk ◽  
Dissolved Metals ◽  
Overlying Water ◽  
Xiangjiang River ◽  
Significant Difference

Abstract Background: Metal pollution in rivers has been a serious environmental problem in aquatic ecosystems. The Xiangjiang River is an important drinking water resource for the Hunan province of China. It is crucial to ascertain the pollution status and health risk of metal in this river. In this study, both surface and overlying water samples were collected from the Xiangjiang River and 12 dissolved metals (Mg, V, Cr, Mn, Fe, Co, Ni, Zn, As, Cd, Sb, and Ba) were investigated. Results: Average concentrations fell in the order of dissolved metal Mg > Mn > Ba > Fe > Zn > As > Sb > Ni > Cd > V > Cr > Co, all of which were lower than the threshold values for drinking water guidelines of China. There was no significant difference in metal concentrations between surface and overlying water. Health risk assessment shows carcinogenic risk (CR) values of As and Cd were higher than the critical value, and children are more susceptible to the health risk of dissolved metals caused by drinking ingestion. Conclusion: The water quality in this area was good overall. Metals pollution appeared more serious in the midstrean and on the southern side of the investigated area. Anthropogenic activities are the main source of heavy metals in the river. Dissolved metals have health risk to local children with hazard index (HI) > 1. While more attention should be paid to As and Cd, which had a potential carcinogenic risk to human. The results provide guidance for controlling metal pollution and protecting drinking water sources in the Xiangjiang River.

scholarly journals Distribution, toxicity load, and risk assessment of dissolved metal in surface and overlying water at the Xiangjiang River in southern China

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Zhifeng Huang ◽  
Saisai Zheng ◽  
Yan Liu ◽  
Xingru Zhao ◽  
Xiaocui Qiao ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Drinking Water ◽  
Ecological Risk ◽  
Southern China ◽  
Water Source ◽  
Carcinogenic Risk ◽  
Drinking Water Source ◽  
Dissolved Metals ◽  
Overlying Water ◽  
Xiangjiang River

AbstractMetal pollution in drinking water source has been under scrutiny as it seriously affects human health. This work examined 12 dissolved metals in the surface and overlying water of the Xiangjiang River, an important drinking water source in southern China, and characterized their distribution, identified their possible sources, assessed their toxicity load, and determined their potential ecological and health risk. No significant difference was found in the metal concentration between surface and overlying water. The average metal concentration fell in the order of Mg > Mn > Ba > Fe > Zn > As > Sb > Ni > Cd > V > Cr > Co, and all was lower than the safety threshold in the drinking water guideline of China. Anthropogenic activities were found to be the main source of metals from correlation analysis, principal component analysis (PCA), and cluster analysis (CA). According to the total heavy metal toxicity load (HMTL), 98.20%, 71.54%, 68.88%, and 7.97% of As, Cd, Sb, and Mn should be removed from the surface water to ensure safety. Most water samples from the surveyed area were found to have high ecological risk as was measured by the ecological risk index (RI). Health risk assessment showed that children are more susceptible than adults to the non-carcinogenic risk of dissolved metals, and the potential carcinogenic risk (CR) of As and Cd should be addressed. The results provide guidance for controlling the metal pollution of the Xiangjiang River and improving its quality as a drinking water source.

scholarly journals Distribution, source, water quality and health risk assessment of dissolved heavy metals in major rivers in Wuhan, China

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e11853
Author(s):  
Xingyong Zhang ◽  
Qixin Wu ◽  
Shilin Gao ◽  
Zhuhong Wang ◽  
Shouyang He
Keyword(s):  
Heavy Metals ◽  
Risk Assessment ◽  
Heavy Metal ◽  
Health Risk ◽  
Health Risk Assessment ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Pollution Index ◽  
Carcinogenic Risk ◽  
Source Water Quality

Heavy metals are released into the water system through various natural processes and anthropogenic activities, thus indirectly or directly endangering human health. The distribution, source, water quality and health risk assessment of dissolved heavy metals (V, Mn, Fe, Co, Ni, Zn, As, Mo, Sb) in major rivers in Wuhan were analyzed by correlation analysis (CA), principal component analysis (PCA), heavy metal pollution index (HPI), hazard index (HI) and carcinogenic risk (CR). The results showed that the spatial variability of heavy metal contents was pronounced. PCA and CA results indicated that natural sources controlled Mn, Fe, Co, Ni and Mo, and industrial emissions were the dominant factor for V, Zn and Sb, while As was mainly from the mixed input of urban and agricultural activities. According to the heavy metal pollution index (HPI, ranging from 23.74 to 184.0) analysis, it should be noted that As and Sb contribute most of the HPI values. The health risk assessment using HI and CR showed that V and Sb might have a potential non-carcinogenic risk and As might have a potential carcinogenic risk to adults and children in the study area (CR value exceeded target risk 10−4). At the same time, it was worth noting that As might have a potential non-carcinogenic risk for children around QLR (HI value exceeded the threshold value 1). The secular variation of As and Sb should be monitor in high-risk areas. The results of this study can provide important data for improving water resources management efficiency and heavy metal pollution prevention in Wuhan.

scholarly journals Water quality analysis and health risk assessment of the Lanzhou section of the Yellow River

2021 ◽  
Author(s):  
Kai Ma ◽  
Hao Ren ◽  
Tianhong Zhou ◽  
Fuping Wu ◽  
Guozhen Zhang
Keyword(s):  
Water Quality ◽  
Risk Assessment ◽  
Drinking Water ◽  
Health Risk ◽  
Health Risk Assessment ◽  
Environmental Quality ◽  
Yellow River ◽  
Carcinogenic Risk ◽  
Risk Level ◽  
The Yellow River

Abstract The Yellow River flows through Lanzhou city and is the only drinking water source for 3.6 million people. However, people are not clear about the water environmental quality and safety in Lanzhou. To address this problem. Water samples were collected from different sites within this section during the high water period, normal water period and dry water period, and the environmental quality and health risk of the surface water were evaluated using the Nemerow index and health risk assessment method. The results are as follows: first, none of the pollutants exceeded the standard, except for total nitrogen; second, the highest comprehensive evaluation score was 1.04, so the water quality level was good; third, the health risk assessment showed that health risk value of water quality in the Lanzhou section of the Yellow River is on the high side, which is mainly caused by Chromium(Cr); fourth, the carcinogenic risk is five orders of magnitude higher than the non-carcinogenic risk, and the total carcinogenic risk is higher than the maximum acceptable risk level (10−5 a−1), while the total non-carcinogenic risk is lower than the acceptable health risk level (10−6 a−1). Therefore, to ensure the safety of its drinking water, Cr pollutants in the Lanzhou section of the Yellow River should be properly treated and controlled.

scholarly journals Influencing factors and health risk assessment of microcystins in the Yongjiang river (China) by Monte Carlo simulation

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e5955 ◽  
Author(s):  
Chan-Chan Xiao ◽  
Mao-Jian Chen ◽  
Fan-Biao Mei ◽  
Xiang Fang ◽  
Tian-Ren Huang ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Drinking Water ◽  
Health Risk ◽  
Human Health ◽  
Health Risk Assessment ◽  
Carcinogenic Risk ◽  
Effective Control ◽  
Total Concentrations

The Yongjiang river is a large, shallow, hyper-trophic, freshwater river in Guangxi, China. To investigate the presence of microcystin-RR, microcystin-LR, and microcystin-YR (MC-RR, MC-LR, and MC-YR) in the Yongjiang river and describe their correlation with environmental factors, as well as, assess health risk using Monte Carlo simulation, 90 water samples were collected at three sample points from March to December 2017. Results showed that during the monitoring period, total concentrations of MC-RR (TMC-RR), MC-YR (TMC-YR), and MC-LR (TMC-LR) varied from 0.0224 to 0.3783 μg/L, 0.0329 to 0.1433 μg/L, and 0.0341 to 0.2663 μg/L, respectively. Total phosphorus (TP) content appeared to be related to TMC-LR and the total concentrations of microcystins (TMCs), while pH and total nitrogen (TN)/TP ratio appeared to be related to TMC-RR and TMC-YR, respectively. Using the professional health risk assessment software @Risk7.5, the risks of dietary intake of microcystins (MCs), including the carcinogenic risk and non-carcinogenic risk, were evaluated. It was found that the carcinogenic risk of MC-RR from drinking water was higher than MC-LR and MC-YR, and the presence of MCs would lead to high potential health risks, especially in children. The carcinogenic risk of MC-RR to children was >1 × 10−4, the maximum allowance level recommended by the US Environmental Protection Agency; as for adults, it was >5 × 10−5, the maximum allowance level recommended by the International Commission on Radiological Protection. The non-carcinogenic hazard index (HI) of MC-RR, MC-YR, and MC-LR increased successively, indicating that MC-LR was more hazardous to human health than MC-YR and MC-RR, but its HI was <1. This suggests that MCs pose less risk to health. However, it is necessary to strengthen the protection and monitoring of drinking water source for effective control of water pollution and safeguarding of human health.

HEALTH RISK ASSESSMENT OF THE POPULATION IN SAMARA ASSOCIATED WITH CHEMICAL CONTAMINATION OF DRINKING WATER

2018 ◽  
pp. 22-26 ◽  
Author(s):  
N.M. Tsunina ◽  
Yu.V. Zhernov
Keyword(s):  
Risk Assessment ◽  
Drinking Water ◽  
Health Risk ◽  
Health Risk Assessment ◽  
Adult Population ◽  
Carcinogenic Risk ◽  
Dichlorophenoxyacetic Acid ◽  
Chemical Contamination ◽  
Regional Features ◽  
2,4 Dichlorophenoxyacetic Acid

The article assesses the regional features for the developing risk of morbidity and mortality of the population from exposure to chemicals. We considered that individual carcinogenic risk in children, the adult population, the entire population in Samara corresponds to the maximum permissible risk (but not minimal). The magnitude of population carcinogenic risk was 19 cases per 1171664 people of the city’s population. Arsenic, lead, cadmium, 2,4-dichlorophenoxyacetic acid (2,4-D) make the main contribution to the carcinogenic risk formation.

scholarly journals Distribution and Health Risk Assessment of Phthalate Acid Esters in Bottled Drinking Water from Selected Brands in Delta State, Southern Nigeria

2020 ◽  
pp. 18-28
Author(s):  
Oghenekohwiroro Edjere ◽  
Albert Chukwuemeka Ibezute ◽  
Osayomwanbor Ebenezer Oghama
Keyword(s):  
Risk Assessment ◽  
Drinking Water ◽  
Health Risk ◽  
Health Risk Assessment ◽  
Total Concentration ◽  
Bottled Drinking Water ◽  
Significant Difference ◽  
Southern Nigeria ◽  
Acid Esters ◽  
Phthalate Acid Esters

Phthalate acid esters (PAEs) are widely used as plasticizers. However, they have the potential to migrate from plastic materials into the environment where they pose detrimental health impacts. Hence, they have gained wide attention. This study was therefore carried out to investigate the distribution and health risk assessment of PAEs in different bottled drinking water brands in Delta State, Southern Nigeria. Samples were collected from ten (10) bottled drinking water brands across eight (8) local government areas of the State. The 6-EPA controlled PAEs (DMP, DEP, DBP, BBP, DEHP and DNOP) and one uncontrolled PAEs (BEP) were investigated. The individual PAE concentrations ranged from 0.005 – 2.738 µg/L while the total concentration of PAEs in the different brands ranged from 0.023 - 4.361 µg/L. The predominant PAEs across the ten brands were DMP and BEP however DBP had the highest total concentration (4.392 μg/L) making it the main contributor to PAE levels in bottled drinking water brands. Analysis of variance showed no significant difference in the concentration of PAEs detected in the different bottled drinking water brands (p˃0.05). Health risk assessment indicated little non-carcinogenic risks from five controlled PAEs and little carcinogenic risk from DEHP. Continuous monitoring is however recommended to ensure than PAE levels in bottled drinking water remain within permissible limits. Our results therefore provides important information for the understanding of the distribution and potential health risks of PAEs in different bottled drinking water brands in Delta State.

scholarly journals Hydrogeochemistry characteristics of groundwater and health risk assessment in Yalvaç–Gelendost basin (Turkey)

2021 ◽  
Vol 11 (4) ◽  
Author(s):  
Ayşen Davraz ◽  
Burcu Batur
Keyword(s):  
Risk Assessment ◽  
Drinking Water ◽  
Health Risk ◽  
Groundwater Quality ◽  
Health Risk Assessment ◽  
Water Samples ◽  
Oral Intake ◽  
Carcinogenic Risk ◽  
Hydrogeochemical Processes ◽  
Negative Effect

AbstractIn this study, hydrogeochemical processes controlling groundwater chemistry and groundwater quality were investigated. Drinking water is supplied from groundwater (mostly spring and well water) in the study area. The various parameters such as physicochemical parameters, major ions, trace elements and nitrogen derivatives of groundwater samples of were analyzed. These analysis results are compared with drinking water standards for suitability and it does not exceed the permissible limit values, except for the As and F contents of some samples. The results of major ion chemistry of groundwater in the Yalvaç–Gelendost basin suggest that the silicate weathering and ion exchange are the main controlling hydrogeochemical processes in the variation of groundwater quality. The water types are Ca–Mg–HCO3, Mg–Ca–HCO3 and Ca–HCO3 in the basin.Non-carcinogenic health risk assessment associated with arsenic, nitrate and fluoride was assessed by oral (ingestion) and dermal pathways for adult and child. For child, hazard coefficient and hazard index values are less than 1, and a negative effect on usage as drinking water and dermal (skin contact) absorption not expected. But, potential non-carcinogenic effect with oral intake is likely to occur for some water samples for adults. In addition, carcinogenic risk of As element was evaluated for adults and child related to oral and dermal effect. The carcinogenic risk of As through oral intake may pose health risks for children. For adults, it has been determined that water ingestion with dermal exposure may cause cancer. Arsenic is the main toxic element for human health in the study area. The content of As decreases in seasonal water samples. In this case, the negative effect of arsenic intake with ingestion and dermal pathways on health decreases.

scholarly journals Investigation of drinking water quality and population health risk assessment in a poor rural area

Work ◽  
2021 ◽  
pp. 1-10
Author(s):  
Lu Zhang ◽  
Lin Li
Keyword(s):  
Water Quality ◽  
Risk Assessment ◽  
Drinking Water ◽  
Health Risk ◽  
Population Health ◽  
Health Risk Assessment ◽  
Rural Areas ◽  
Carcinogenic Risk ◽  
Safety Of Drinking Water ◽  
The City

BACKGROUND: The quality and safety of drinking water directly affect the health of the local population. However, due to the limited conditions in poor rural areas, the safety of drinking water is more prominent. OBJECTIVE: It aimed to ensure the safety of drinking water quality and population health in poor rural areas. METHODS: A rural poor area was taken as an example, the drinking water plants were monitored during wet season and dry season, respectively, and the water quality indicators of rural drinking water in the city in 2019 were detected and analyzed. Finally, based on the non-carcinogenic risk and carcinogenic risk evaluation model proposed, the health risk assessment of chemical pollutants in drinking water was carried out. RESULTS: In 2019, the qualified rate of drinking water in rural areas of the city was generally low. The average annual carcinogenic risk of drinking water in poor rural areas of the city was 1.57×10–6 (a–1), and the average annual non-carcinogenic risk was 5.38×10–9 (a–1). CONCLUSION: The health risk assessment model proposed can well evaluate the health risks of drinking water. The research provides a scientific basis for the risk management of drinking water of relevant departments.

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