Ingestion risks of metals in groundwater based on TIN model and dose-response assessment — A case study in the Xiangjiang watershed, central-south China

Chai, Liyuan; Wang, Zhenxing; Wang, Yunyan; Yang, Zhihui; Wang, Haiying; Wu, Xie

doi:10.1016/j.scitotenv.2010.04.030

Cited by 79 publications

(33 citation statements)

References 39 publications

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“…It can therefore be concluded that the high concentrations of Zn in drinking water from Hunan must be a result of contamination from the Zn mining/smelting activities [50]. This is in agreement with the findings of Cai et al [34], where they have reported similar concentrations of Zn (10-2090 µg/L) in contaminated groundwater from Xiangjiang watershed, Hunan province.…”

Section: Trace Metal Concentrationssupporting

confidence: 91%

“…Therefore, it is essential to constantly monitor water quality used for drinking purposes in China, but such work is not always sufficient. Furthermore, drinking water quality monitoring and the available studies on daily intakes of trace metals in drinking water are limited to big cities [31][32][33] or specific sites [34,35]. In rural areas or countryside regions, water quality information is scarce [3,8].…”

Section: Introductionmentioning

confidence: 99%

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Occurrence and Health-Risk Assessment of Trace Metals in Raw and Boiled Drinking Water from Rural Areas of China

Man

Sun

et al. 2018

Water

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Abstract:In order to assess the exposure of rural residents to trace metals via drinking water ingestion, 222 drinking water samples of rural areas from 8 provinces in China were collected and 18 trace metals analyzed by inductively coupled plasma mass spectrometer (ICP-QMS). Based on metal concentrations, the health-risk assessment such as chronic daily intakes (CDI) and hazard quotient (HQ) were calculated. Results showed that most metals occurred in the drinking water at very low concentrations, indicating a general good quality, while the concentrations of As, Pb and Zn in some samples from Qinghai, Yunnan and Hunan provinces were higher than World Health Organization (WHO) and Chinese guidelines for drinking water. The values of CDI and HQ indicated a negligible health risk for most Chinese rural residents via drinking water. However, high concentrations of As in drinking water from Qinghai province would pose a serious risk to the local inhabitants. More attention and intensive study should be paid to Zn, Pb and As contents.

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Section: Trace Metal Concentrationssupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Occurrence and Health-Risk Assessment of Trace Metals in Raw and Boiled Drinking Water from Rural Areas of China

Man

Sun

et al. 2018

Water

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“…Metals are the most persistent contaminants in the aquatic environment (Chai et al 2010, Li et al 2014a. To protect human health, the World Health Organization (WHO) has developed guideline values and China has developed standards for regulating the maximum contaminant levels (MCL) in water for most metals (Li et al 2014a).…”

Section: Introductionmentioning

confidence: 99%

Spatial Distribution, Potential Sources, and Risk Assessment of Trace Metals of Groundwater in the North China Plain

Yan

et al. 2014

Human and Ecological Risk Assessment: An International Journal

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Diversion of water for irrigation from the Yellow River has impacted groundwater quality in the North China Plain (NCP). In this study, by using geochemical and isotope methods, groundwater origin, the spatial distribution of trace metals, pollution sources, and health risks were evaluated. Groundwater is recharged from surface water. The primary pollution components in surface water were B, Al, Se, Zn, Mn, and Ni-with concentrations exceeding standards by 100%, 84.4%, 64.4%, 31.1%, 20%, and 2.2%, respectively. In groundwater, exceeding standard rates for those elements were 100%, 100%, 61%, 25.7%, 39%, and 4.9%, respectively. The spatial distribution of polluted metals in surface water and groundwater was correlated, indicating an irrigation-influenced spatial distribution of trace metals in the groundwater. The trace metals were introduced via anthropogenic and geogenic activities. Zinc poses the most serious non-carcinogenic hazard for local residents. The ingestion pathway is much more likely to lead to zinc toxicity than the dermal absorption pathway. The carcinogenic Cd and Pb could result in an increased cancer risk for individuals exposed to the water. Non-carcinogenic hazard and carcinogenic risk attributable to groundwater is serious in the regions traversed by the rivers in the study area.

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“…Although the second pathway (direct exposure) forms the basis of human health risk assessment, it is not discussed as widely in the literature as the first pathway [13]. Moreover, in spite of increased understanding of the risks of heavy metals in China [14,15], there is still lack of discussion about potential health risks from Cr (VI) in soils and vegetables. The direct soil exposure includes incidental ingestion of soil, inhalation of particulates emitted from surface waste material, and dermal contact with soil.…”

Section: Introductionmentioning

confidence: 99%

Environmental impact and site-specific human health risks of chromium in the vicinity of a ferro-alloy manufactory, China

Wang

Chen

Chai

et al. 2011

Journal of Hazardous Materials

101

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Ingestion risks of metals in groundwater based on TIN model and dose-response assessment — A case study in the Xiangjiang watershed, central-south China

Cited by 79 publications

References 39 publications

Occurrence and Health-Risk Assessment of Trace Metals in Raw and Boiled Drinking Water from Rural Areas of China

Occurrence and Health-Risk Assessment of Trace Metals in Raw and Boiled Drinking Water from Rural Areas of China

Spatial Distribution, Potential Sources, and Risk Assessment of Trace Metals of Groundwater in the North China Plain

Environmental impact and site-specific human health risks of chromium in the vicinity of a ferro-alloy manufactory, China

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