Analysis and assessment of the nutrients, biochemical indexes and heavy metals in the Three Gorges Reservoir, China, from 2008 to 2013

Gao, Qiang; Li, Yang; Cheng, Qingyuan; Yu, Miao; Hu, Bo; Wang, Zhigang; Yu, Zhiqiang

doi:10.1016/j.watres.2015.12.055

Cited by 196 publications

(63 citation statements)

References 33 publications

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“…Heavy metal remediation methods, especially biological remediation technologies, greatly contribute to the global ecosystem (Ye et al , , ). Heavy metals are hazardous to humans and other animals via damage to the nervous system and internal organs as they accumulate (Lohani et al ); therefore, their assessment and quantification have attracted significant attention (Pertsemli and Voutsa ; Gao et al ; Liu et al ). Risk assessment including site specification, hazard identification, exposure assessment, toxicity assessment, and risk characterization were adopted in the present study (US Environmental Protection Agency ).…”

Section: Introductionmentioning

confidence: 99%

Multivariate Analyses and Human Health Assessments of Heavy Metals for Surface Water Quality in the Xiangjiang River Basin, China

Jiang

Wang

Zhou

et al. 2019

Enviro Toxic and Chemistry

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Pollution by heavy metals in river water is becoming a major subject of global drinking water concern, and the Xiangjiang River is one of the most heavily polluted rivers in China. Water samples were collected from 17 sites spanning the entire Xiangjiang watershed from 2005 to 2016 to investigate spatial–temporal distributions and potential human health risks related to 8 metal pollutants (As, Cd, Hg, Cr, Cu, Pb, Zn, and Se). The results of spatial–temporal distribution analyses proved that most metals were below the guideline limits the majority of the time. However, the hazard index and carcinogenic risk analyses indicated that As and Cr were associated with a potential risk of cancer, although noncarcinogenic heavy metals in general and carcinogenic risk declined year by year. A nonparametric seasonal Mann‐Kendall's test revealed that there were notable decreasing trends in As, Cd, Zn, Cu, Cr, and Pb for most sites, whereas Se and Hg significantly increased in some areas over the targeted 12 yr. The results of principal component analysis agreed with those of dual hierarchical cluster analysis in the identification of pollution sources, the results of which are as follows: 1) As, Cd, Pb, Hg, and Zn were mainly derived from anthropogenic activities and the smelting industry; 2) Cr and Cu mainly originated from agricultural or industrial activities; and 3) Se was predominantly from natural erosion. The present study will be conducive to optimizing the distribution of water monitoring stations and drafting remediation strategies pertaining to the protection of public health in metal‐polluted areas. Environ Toxicol Chem 2019;38:1645–1657. © 2019 SETAC

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Section: Introductionmentioning

confidence: 99%

Multivariate Analyses and Human Health Assessments of Heavy Metals for Surface Water Quality in the Xiangjiang River Basin, China

Jiang

Wang

Zhou

et al. 2019

Enviro Toxic and Chemistry

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“…The sediments can be a source of heavy metals through resuspension, especially when events such as storms or heavy rainfall occur [8]. Studies showed that aquatic sediments absorb water contaminants to levels significantly higher than the water column concentrations and so they act as endogenic sources of contaminations [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Seasonal Evolution and Depth Variability of Heavy Metal Concentrations in the Water of Firiza-Strîmtori Lake, NW of Romania

Dippong¹,

Mihali²,

Goga³

et al. 2017

Studia UBB Chemia

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ABSTRACT. The paper follows the spatial variability and seasonal evolution of the heavy metal content of the Firiza-Strîmtori Reservoir that is the main source of drinking water for Baia Mare city located in the northwestern part of Romania. Water samples were collected from 10 sampling points located along the median line of the lake at different depths (at surface, at 5 m, 10 m, 15 m and 20 m). The experiments were carried out in the winter, spring, summer and autumn of 2015. We determined the concentration -depth profiles, both for the heavy metals iron (Fe), manganese (Mn), zinc (Zn), copper (Cu), cadmium (Cd), lead (Pb) and also for sodium (Na), potassium (K), calcium (Ca) and magnesium (Mg). We determined the concentrations of heavy metals by atomic absorption spectrometry. We found that concentrations of heavy metals increase with depth. Generally, the concentrations of heavy metals are within the legal limits for the water used as drinking water sources. Mathematical models with high correlation coefficients were obtained in the case of heavy metal concentrations depending on depth and also for the seasonality of heavy metals upload.

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“…The reference ratio of pathogens to E. coli was 0.08 for E. coli O157:H7, 0.66 for Campylobacter, 5 × 10 −6 for Rotavirus, and 10 −6 for Protozoa, respectively [26,27]. Exposure pathways, volume ingested, frequency, and number of persons were based on Westrell et al [19] and Harder et al [23]. The microbial risk was estimated by using dose-response equations of either the β-Poisson model (Equation (4)) or the exponential type (Equation (5)) [26], reported values of parameters for the dose-response model were referred to [33].…”

Section: Human Health Risk Assessmentmentioning

confidence: 99%

“…There are several pathways that heavy metals deriving from WWTPs affect ecological safety and human heath, including WWTPs discharging into surface water, reclaimed water used for irrigation, and landfill of sludge, etc. A number of studies have been devoted to revealing the ecological risk or human health caused by landfill of sludge, agricultural irrigation of reclaimed water, and contamination of underground water [15][16][17][18][19][20][21]. Although the treated effluent from WWTPs can be exposed to humans through different exposure pathways [22,23], few studies have focused on the health risk of heavy metals in WWTP effluent.…”

Section: Introductionmentioning

confidence: 99%

Technical Performance and Environmental Effects of the Treated Effluent of Wastewater Treatment Plants in the Shenzhen Bay Catchment, China

Wang

et al. 2016

Sustainability

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Technical performance and effluent environmental impact of seven wastewater treatment plant (WWTPs) in the Shenzhen Bay Catchment, China were examined. All WWTPs had good performance in the removal of chemical oxygen demand, biochemical oxygen demand, and suspended solids, while total nitrogen and total phosphorus removal should be enhanced to improve the comprehensive pollutants removal loading rate. The effluent eutrophication effect from WWTPs was in the range of 0.0028-0.0092 kg/m 3 , and nitrate was the major contributor. The effluent greenhouse gas emission of WWTP1-7 was in the range of 3.23 × 10 −5 -8.70 × 10 −5 kg·CO 2 /m 3 . The effluent eutrophication effects and greenhouse gas emission of WWTPs could be reduced by decreasing the effluent total nitrogen concentration. The ecological risk and healthy risk of heavy metals were low. Among examined heavy metals, lead contributed the most to the ecological risk while arsenic contributed most to the human health risk. The human health risk of microbial pollutants of WWTPs1-7 was in the range of 0.0024-0.0042 DALY (Disability Adjusted Life Years). Finally, an ecosystem-based WWTP framework was proposed to systematically include all environmental effects so as to support the sustainable development of WWTPs.

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Analysis and assessment of the nutrients, biochemical indexes and heavy metals in the Three Gorges Reservoir, China, from 2008 to 2013

Cited by 196 publications

References 33 publications

Multivariate Analyses and Human Health Assessments of Heavy Metals for Surface Water Quality in the Xiangjiang River Basin, China

Multivariate Analyses and Human Health Assessments of Heavy Metals for Surface Water Quality in the Xiangjiang River Basin, China

Seasonal Evolution and Depth Variability of Heavy Metal Concentrations in the Water of Firiza-Strîmtori Lake, NW of Romania

Technical Performance and Environmental Effects of the Treated Effluent of Wastewater Treatment Plants in the Shenzhen Bay Catchment, China

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