Source identification and risk assessment based on fractionation of heavy metals in surface sediments of Jiaozhou Bay, China

Liang, Xianmeng; Song, Jinming; Duan, Liqin; Yuan, Huamao; Li, Xuegang; Li, Ning; Qu, Baoxiao; Wang, Qidong; Xing, Jing Tang

doi:10.1016/j.marpolbul.2018.02.008

Cited by 92 publications

(34 citation statements)

References 46 publications

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“…HM contents in soils are natural components of the Earth’s crust and mainly depend on the geological parent material [17]. Meanwhile, anthropogenic sources, such as industrial activities, agricultural practices, and vehicle exhaust, can also increase the contents of HMs [18,19,20]. In urban areas, HMs may originate from various sources, such as industrial activities, mining, smelting, power generation, fossil fuel combustion, and waste disposal [21,22,23].…”

Section: Introductionmentioning

confidence: 99%

Distribution and Contamination Assessment of Soil Heavy Metals in the Jiulongjiang River Catchment, Southeast China

Zhang

Han

et al. 2019

IJERPH

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A total of 63 soil samples were collected from three soil profiles (yellow soil, red loam, red soil) from Jiulongjiang river catchment to investigate the distribution, controlling factors, and toxic risks of heavy metals, including Cr, Mn, Fe, Cu, Zn, Cd, Pb, and Ni. The results showed that Cr and Cd in soils were enriched. The relationships between heavy metals and soil properties were assessed by principal component analysis. The results indicated that soil organic matter (SOM) played a fundamental role in controlling Cd and Pb in yellow soil and red loam sites. The Cd was significantly correlated with Pb and Cu, and Cr, Zn, Ni, Fe displayed strong correlations with each other, however, no statistical correlation was found between Cd and Cr. The enrichment factor and geoaccumulation index analyses showed that the soils in the study area were contaminated by Cd. Potential ecological risk analyses indicated that Cd posed a considerable ecological risk in yellow soils, and posed a moderate ecological risk in red loams and red soils.

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Section: Introductionmentioning

confidence: 99%

Distribution and Contamination Assessment of Soil Heavy Metals in the Jiulongjiang River Catchment, Southeast China

Zhang

Han

et al. 2019

IJERPH

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“…Fraction 2 is a metal bound to Fe-Mn oxide seen in Pb and Zn heavy metals with a percentage of 11.85-34.88% and 32.83-72.73%. This indicates that Fe-Mn oxide is efficient as a scavengers in Pb and Zn metals (Liang et al, 2018). Fraction 3 is a metal that is bound to organic components seen in Pb and Zn heavy metals with a percentage of 14.67 -55.32% and 3.71-44.24%.…”

Section: Resultsmentioning

confidence: 96%

“…Fractionation of Pb, Cu and Zn in the sediment waters consisted of exchangeable fractions, reducible (Fe-Mn oxide) fractions, oxidizable (organic) fractions, and residual fractions (Figure 2.). The residual fraction (F4) of heavy metals is mainly composed of crystalline or lithogenous fraction minerals from sediments (Liang et al, 2018). The proportion of residual fraction (F4) in Pb, Cu and Zn is ranged between 10.13-39.37%, 97.7-100% and 15.34-52.02% respectively.…”

Section: Resultsmentioning

confidence: 99%

Source Identification, Bioavailability, and Risk Assessment based on Geochemical Fractionation of Heavy Metals Pb, Cu, and Zn in Surface Sediments of Kelabat Bay, Bangka Island

2019

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Although concentrations of many heavy metals has been measured totally, they may not give a good indicator for environmentally hazard to organism. The purpose of this study is to identify sources, determine bioavailability, and assess risk based on the geochemical fractionation of heavy metals Pb, Cu and Zn on the surface sediments of Kelabat Bay, Bangka Island. Fractionation of heavy metals was analyzed by sequential extraction. The concentrations of heavy metals Pb, Cu, and Zn in sediments ranged from 8.86-29.21 mg.kg-1 (average 16.85 mg /kg), 0.16-9.54 mg.kg-1 (average 4.39 mg.kg-1), and 25.58-237.24 mg.kg-1 (average 71.99 mg.kg-1). Pb and Zn in Kelabat Bay are more bound to non-residual fractions (F1+F2+F3) or non-resistant with a range of 60.63-89.87% and 47.98-84.66% that are mainly come from anthropogenic activities. Cu tend to be stored or bound to the residual fraction (F4) with a proportion of 97.7-100% meaning that it comes from natural sources. Based on the Risk Assessment Code (RAC), Pb have a low to moderate risk in the environment and Zn heavy metals are not at risk to low. These conditions indicate the potential for biological availability (bioavailability) of Pb and Zn in the inner bay waters. For heavy metals Cu is not at risk in the environment.

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“…However, the results of the one-way analysis of variance showed that there was no significant difference in the concentrations of heavy metals from 1988 to 2020 (p > 0.05), which seems to indicate that the contribution of nuclear power plants sources to the contents of heavy metals in the sediment is limited. Compared with other bays along the coast of China, the levels of heavy metal concentration in Daya Bay were slightly higher than Beibu Gulf [20], but lower than Liaodong Bay, Bohai Bay, Jiaozhou Bay, Zhoushan Bay, and Quanzhou Bay [31][32][33][34][35]. Table 3 lists the overall heavy metal concentrations of 20 organism species collected in Daya Bay.…”

Section: Heavy Metal Concentrations In Sedimentsmentioning

confidence: 99%

Biological Risk Assessment of Heavy Metals in Sediments and Health Risk Assessment in Marine Organisms from Daya Bay, China

Kuang

Rao

et al. 2020

JMSE

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The concentrations of heavy metals in sediments and marine organisms in Daya Bay were investigated, and the Monte Carlo method was used to analyze the uncertainty of the results of geo-accumulation characteristics and ecological and health risks. The mean concentrations of metal elements in sediments were in the following order: Zn > Cr > Cu > As > Cd > Hg, while those in marine organisms were Zn > Cu > As > Cr ≈ Cd > Hg. The geo-accumulation index (Igeo) indicated that the primary pollutant was Hg, with 5.46% moderately polluted, and 39.52% for unpolluted to moderately polluted. Potential ecological risks (RI) were between low and high risks, and the contributions of Hg, Cd, and As to ecological risks were 50.85%, 33.92%, and 11.47%, respectively. The total hazard coefficients (THQ) were less than 1, but on the basis of total carcinogenic risks (TCR), the probability of children and adults exceeded the unacceptable risk threshold of 22.27% and 11.19%, respectively. Sensitivity analysis results showed that the concentrations of carcinogenic elements contributed to risk in the order of As > Cd > Cr. Therefore, in order to effectively control heavy metals contamination in Daya Bay, it is necessary to strengthen the management of Hg, Cd, and As emissions.

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Source identification and risk assessment based on fractionation of heavy metals in surface sediments of Jiaozhou Bay, China

Cited by 92 publications

References 46 publications

Distribution and Contamination Assessment of Soil Heavy Metals in the Jiulongjiang River Catchment, Southeast China

Distribution and Contamination Assessment of Soil Heavy Metals in the Jiulongjiang River Catchment, Southeast China

Source Identification, Bioavailability, and Risk Assessment based on Geochemical Fractionation of Heavy Metals Pb, Cu, and Zn in Surface Sediments of Kelabat Bay, Bangka Island

Biological Risk Assessment of Heavy Metals in Sediments and Health Risk Assessment in Marine Organisms from Daya Bay, China

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