Spatial distribution, ecological and health risk assessment of heavy metals in marine surface sediments and coastal seawaters of fringing coral reefs of the Persian Gulf, Iran

Jafarabadi, Ali Ranjbar; Bakhtiyari, Alireza Riyahi; Toosi, Amirhossein Shadmehri; Jadot, Catherine

doi:10.1016/j.chemosphere.2017.07.110

Cited by 213 publications

(50 citation statements)

References 136 publications

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“…where K P refers to dermal permeability coefficient of pollutant; t event represents event duration; ED d , EV, and EF d represent dermal contact exposure duration, the event frequency, and dermal contact exposure frequency, respectively; GIABS is the fraction of chemical absorbed in gastrointestinal tract; SA refers to skin surface area. The values of parameters were obtained from the references and shown in Table S2 ( Akhbarizadeh et al, 2016;IRIS, 2018;Ranjbar Jafarabadi et al, 2017;Sarria-Villa et al, 2016;USEPA, 2004;USEPA, 2016). Health risks posed by heavy metals in groundwater were calculated by the following equations:…”

Section: Health Risks Of Heavy Metals In Groundwatermentioning

confidence: 99%

Influence of coastal groundwater salinization on the distribution and risks of heavy metals

Wen

Lü

et al. 2019

Science of The Total Environment

151

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Coastal groundwater quality significantly affects the regional sustainable development, due to the water resource shortage in coastal zone. Current studies on coastal groundwater have mainly focused on saline water intrusion and over-extraction. Information on the heavy metal pollution of coastal groundwater with salinization trend is limited. This study investigated heavy metals in groundwater from a typical coastal region with intensive anthropogenic activities and saline water intrusion. The southwestern coastal plains of the study area showed significant groundwater salinization trend. Heavy metals in the coastal groundwater mainly originated from anthropogenic activities and groundwater salinization according to principal component analysis. Relative high concentrations of As, Co, Cr, Cu, Fe, Mn, and Ni occurred in the southwestern coast of the study area with high TDS level, indicating that the concentrations of these heavy metals in shallow aquifer of the study area might be influenced by the groundwater salinization. Average concentrations of heavy metals in groundwater of the study area ranged from 0.03 (Cd) to 686.92 (Fe) μg/L. Fe was the dominant heavy metal in groundwater with the maximal concentration of 2333.76 μg/L and exceeding-standard rate reaching 98.23%. Approximately 13.27% of sampling sites showed moderate or higher heavy metal pollution of groundwater based on heavy metal pollution index. Heavy metals in groundwater exerted low ecological risks. Elements Fe, Ni, and As were the main contributors for ecological risks. Cancer risks of heavy metals for both adults and children were high at all sampling sites. Non-cancer risks for adults and children were unacceptable at 4.42% and 17.70% of sampling sites, respectively. The

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Section: Health Risks Of Heavy Metals In Groundwatermentioning

confidence: 99%

Influence of coastal groundwater salinization on the distribution and risks of heavy metals

Wen

Lü

et al. 2019

Science of The Total Environment

151

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“…It is noteworthy that Hg is one of the heavy metals of most concern, since its non-biodegradability and bio-accumulative pollution are the cause of birth defects, brain damage and diseases in humans and wildlife. 103 Mercury is released into the environment by anthropogenic sources in the form of several industry products/byproducts and processes [104][105][106][107] including gold mining by amalgamation, 108 chlor-alkali industry wastewater, 109,110 cement and mineral production, 111 combustion in coal-fired power plants, [112][113][114] port activities, 115 petroleum refineries, 116,117 batteries 118 and fluorescent lamps. 119 In addition, volcanic eruptions, 120 deposits of cinnabar 121,122 and trace amounts in coal 123,124 are relevant natural sources of Hg emission.…”

Section: Introductionmentioning

confidence: 99%

Water-dispersible few-layer graphene flakes for selective and rapid ion mercury (Hg²⁺)-rejecting membranes

et al. 2020

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“…ere is growing concern all over the world that a large amount of industrial wastewater and domestic sewage is discharged directly into rivers or other water bodies due to the rapid development of industrialization and urbanization [1][2][3]. Of all the pollutants in the discharges that endanger ecosystem, heavy metals play a significant role [4,5]. When accumulated to some extent in sediment, heavy metals such as Cu, Cd, Pb, Zn, Ni, Hg, and Cr can be toxic to plants, animals, humans, and aquatic life due to the characteristic of bioaccumulation, persistence, and environmental toxicity [1,2,6].…”

Section: Introductionmentioning

confidence: 99%

pH Effect on Heavy Metal Release from a Polluted Sediment

Zhang

et al. 2018

Journal of Chemistry

106

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The performance of Cd, Ni, and Cu release from river sediment at different pH was investigated by a leaching test using deionised water and river water as leachants. Visual MINTEQ geochemical software was used to model the experimental results to predict heavy metal release from sediments. The distribution and speciation of heavy metals in the sediments after leaching test were analyzed by Tessier sequential extraction. Leaching test results showed that the release amounts of Cd, Ni, and Cu are in the range of 10.2–27.3 mg·kg−1, 80.5–140.1 mg·kg−1, and 6.1–30.8 mg·kg−1, respectively, with deionised water as leachant at different pH. As far as the river water was used as the leaching solution in the test, the results show similar metal leaching contents and tendencies to that of the deionised water as leaching solution. The results of Tessier sequential extraction indicate that Cd of residual fraction easily forms obvious precipitate under the acidic condition, especially in the range of pH 0–4 with the residual of Cd over 50% of the total Cd in the sediment. The exchangeable content of Ni decreases with the increase of pH under the range of 0–5. The Fe-Mn oxide fraction of Cu in the sediments changes significantly from pH 0 to pH 9. Based on the effect of pH on the leaching of Cd, Ni, and Cu from the polluted sediment in the tests, more accurate information could be obtained to assess the risk related to metal release from sediments once it is exposed to the changed acid/alkali water conditions.

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Spatial distribution, ecological and health risk assessment of heavy metals in marine surface sediments and coastal seawaters of fringing coral reefs of the Persian Gulf, Iran

Cited by 213 publications

References 136 publications

Influence of coastal groundwater salinization on the distribution and risks of heavy metals

Influence of coastal groundwater salinization on the distribution and risks of heavy metals

Water-dispersible few-layer graphene flakes for selective and rapid ion mercury (Hg²⁺)-rejecting membranes

pH Effect on Heavy Metal Release from a Polluted Sediment

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Spatial distribution, ecological and health risk assessment of heavy metals in marine surface sediments and coastal seawaters of fringing coral reefs of the Persian Gulf, Iran

Cited by 213 publications

References 136 publications

Influence of coastal groundwater salinization on the distribution and risks of heavy metals

Influence of coastal groundwater salinization on the distribution and risks of heavy metals

Water-dispersible few-layer graphene flakes for selective and rapid ion mercury (Hg2+)-rejecting membranes

pH Effect on Heavy Metal Release from a Polluted Sediment

Contact Info

Product

Resources

About

Water-dispersible few-layer graphene flakes for selective and rapid ion mercury (Hg²⁺)-rejecting membranes