Source-specific ecological risk assessment and quantitative source apportionment of heavy metals in surface sediments of Pearl River Estuary, China

He, Xuesong; Shahab, Asfandyar; Ye, Feng; Wei, Gangjian; Li, Jieyue; Deng, Liming

doi:10.1016/j.marpolbul.2022.113726

Cited by 45 publications

(14 citation statements)

References 61 publications

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“…5 ), but the fish Engraulis japonicus is very secure due to HC 5 and RQ values indicating very low ecological risk (Table 1 ). Although Jia et al and Xiao et al noted that Pb poses a low ecological risk in estuarine waters of the Pearl River 44 , 47 , certain hot spots also deserve much more attention for Pb contamination. The sampling sites with the higher risks induced by Pb were Hongqimen (S4), Modaomen (S6) and Hutiaomen (S8) with the proportion of affected species reached 0.57% (0.08-1.55%), 0.56% (<1.29%) and 0.59% (0.01-1.49%), respectively (Fig.…”

Section: Discussionmentioning

confidence: 99%

“…This is mainly due to the fact that the river upstream of Humen, Jiaomen, Hongqimen, and Hengmen passes through the main manufacturing cities of the Pearl River Delta, such as Foshan, Dongguan, ZhongShan and Guangzhou, whereas the river upstream of Yamen passes by Jiangmen, which is less developed in the manufacturing industry. Upstream manufacturing companies can be the major source of heavy metals in the estuarine waters of the Pearl River 44 , 47 .…”

Section: Discussionmentioning

confidence: 99%

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Ecological risk assessment of aquatic organisms induced by heavy metals in the estuarine waters of the Pearl River

Tang

Liu

Niu

et al. 2023

Sci Rep

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With the rapid economic development of China's coastal areas and the growth of industry and population, the problem of heavy metal contamination in estuarine waters is increasing in sensitivity and seriousness. In order to accurately and quantitatively describe the current status of heavy metal contamination and identify sensitive aquatic organisms with high ecological risks, five heavy metals in eight estuaries of the Pearl River were monitored at monthly intervals from January to December in 2020, and the ecological risks of aquatic organisms induced by heavy metals were evaluated using Risk quotients (RQ) and species sensitivity distributions (SSD) methods. The results showed that the concentrations of As, Cu, Pb, Hg and Zn in estuaries of the Pearl River were (0.65–9.25) μg/L, (0.07–11.57) μg/L, (0.05–9.09) μg/L, (< 0.40) μg/L and (0.67–86.12) μg/L, respectively. With the exception of Hg in Jiaomen water, the other heavy metals in each sampling site met or exceed the water quality standard of Grade II. The aquatic ecological risks of As, Pb and Hg were generally low in the waters of the Pearl River estuary, but individual aquatic organisms are subject to elevated ecological risks due to Cu and Zn. The content of Zn has a lethal effect on the crustaceans Temora Stylifera, and the content of Cu has a serious impact on the mollusks Corbicula Fluminea and has a certain impact on the crustaceans Corophium sp. and the fish Sparus aurata. Heavy metal levels and joint ecological risks (msPAF) in the Humen, Jiaomen, Hongqimen, and Hengmen estuaries were slightly higher than in other estuaries, and the Yamen estuary had the lowest contration of heavy metals and ecological risk. Research findings can serve as a basis for formulating water quality standards for heavy metals and for protecting aquatic biodiversity in the Pearl River Estuary.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Ecological risk assessment of aquatic organisms induced by heavy metals in the estuarine waters of the Pearl River

Tang

Liu

Niu

et al. 2023

Sci Rep

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“…When non-essential metals like Pb and Cd bioaccumulate in tissues, they can cause intoxication, cellular and tissue damage, diminished fertility, malfunction of several organs, and even cell death. These metals are often strong poisons even at very low concentrations [11][12][13][14]. The European Union has included lead and cadmium in its hazardous metal standards, and the US Food and Drug Administration has designated nickel and chromium as dangerous metals [15,16].…”

Section: Introductionmentioning

confidence: 99%

Trace metals concentration and risk assessment in the southeastern Mediterranean sediments

Hassaan,

Dardeer,

Nemr

2024

Preprint

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Trace metals (Li, B, Na, Mg, Al, K, Ca, Ti, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Se, Sr, Ag, Cd, In, Ba, Hg, Pb, Bi) in surface sediments of the Nile Delta coastal area between Western Harbor and Bardaweel Lagoon were evaluated. The ecological risk assessment was evaluated by Contamination degree (Cd), Geoaccumulation Factor (Igeo), Enrichment Factor (EF), Contamination Factor (CF), Hazard Quotient (HQ) and Pollution Load Index (PLI). The EF values are in the sequence: Cr > Pb > Ni > Zn > Cu > Mn. The studied locations were unpolluted with Cr, Cu, Mn, Ni, Pb, and Zn (Igeo ≤0) and the Cd (> 1.5). Significant correlations were reported between the concentrations of Mn, Fe, Cr, Co and Ni suggesting similar sources. The HQ indicate low values for children and 3–4 > adult values. Using principal component analysis (PCA), the sources of heavy metals were categorized.

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“…Sediments are the main carriers of heavy metals in coastal environments and are prone to adherence to fine-grained sediments [11,12]. However, sediment is also a habitat for microorganisms, and benthos at the bottom of the biological chain [13], and the toxicity of heavy metals is gradually amplified through the food chain, posing a serious threat to human health [14]. Sediments are the "sink" of heavy metals in seawater and the "source".…”

Section: Introductionmentioning

confidence: 99%

Distribution and Ecological Risk Assessment of Nutrients and Heavy Metals in the Coastal Zone of Yantai, China

Li,

Bao,

Wang

et al. 2024

Water

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As urbanization accelerates, a growing influx of pollutants enters the sea through land runoff, posing a threat to coastal ecosystems. In this study, we systematically determined the concentrations of nutrients and heavy metals in the water and sediments of coastal areas (Yantai, China) and assessed their sources and ecological risks. The results showed that inland rivers transported large amounts of NO3− and PO43− into coast water, which caused severe eutrophication. Regarding heavy metals, copper dominated in seawater, whereas plumbum and arsenic were dominant in sediment, which was sourced from aerosol deposition and mariculture. Zinc, chromium, copper, mercury, and cadmium contributed slightly to pollution, with low enrichment factors, mainly from natural sources. Further analysis showed that zinc, mercury, copper, and arsenic were significantly affected by the grain size composition in sediment. Ecological risk assessment indicated that the coastal zone of Yantai City is in a state of light heavy-metal pollution.

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Source-specific ecological risk assessment and quantitative source apportionment of heavy metals in surface sediments of Pearl River Estuary, China

Cited by 45 publications

References 61 publications

Ecological risk assessment of aquatic organisms induced by heavy metals in the estuarine waters of the Pearl River

Ecological risk assessment of aquatic organisms induced by heavy metals in the estuarine waters of the Pearl River

Trace metals concentration and risk assessment in the southeastern Mediterranean sediments

Distribution and Ecological Risk Assessment of Nutrients and Heavy Metals in the Coastal Zone of Yantai, China

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