Coastal sediment heavy metal(loid) pollution under multifaceted anthropogenic stress: Insights based on geochemical baselines and source-related risks

Kuang, Zexing; Wang, Huijuan; Han, Beibei; Rao, Yiyong; Gong, Haixing; Zhang, Wanru; Gu, Yang-Guang; Fan, Zhengqiu; Wang, Shoubing; Huang, Honghui

doi:10.1016/j.chemosphere.2023.139653

Cited by 7 publications

(5 citation statements)

References 50 publications

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“…Furthermore, the proportions of other elements in Factor 2 and Factor B closely corresponded to BV, reinforcing their classification as natural sources. Hg exhibited weak correlation with other HMs on land (Figure 6), indicating the presence of an independent source of Hg, in accordance with Factor C. Substantial research has demonstrated that Hg can function as an independent pollutant [49][50][51], owing to its unique physicochemical properties and environmental behavior [52]. Hg serves as an indicative element for atmospheric deposition, primarily due to its extensive long-range transport within the atmosphere resulting from human activities [53].…”

Section: Factor Apportionment and Contributionsmentioning

confidence: 86%

Characteristics and Sources of Heavy Metals Pollution in Surface Sediments: An Integrated Land–Sea Comparative Analysis in Dingzi Bay, South Yellow Sea

Gu,

Liu,

Yang

et al. 2024

Water

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Systematic and scientific assessments on heavy metal pollution are greatly important to protecting the coastal eco-environment. In this paper, the spatial distribution, pollution degree, ecological toxicity and possible sources of eight heavy metal elements collected from the 126 marine and 715 terrestrial surface sediments surrounding Dingzi Bay were analyzed by obtaining concentration measurements. The results revealed that the concentrations of heavy metals followed a pattern: inner bay > terrestrial areas > outer bay. Cr, Ni, Cu, Zn, Cd, Pb, and Hg were found to accumulate in fine particles (<0.063 mm), while As showed an association with specific particles (>0.25 mm and <0.016 mm). Spatial pollution patterns varied from non-polluted to low pollution levels overall, with localized contamination by individual elements. In addition to natural sources, four types of anthropogenic pollution were identified in the marine and terrestrial settings. Agricultural pollution, characterized by As predominance, exerted profound effects on both terrestrial and marine environments. Industrial pollution, featuring Hg dominance, was widespread in land environment and predominantly linked to atmospheric deposition. Traffic pollution, marked by elevated Pb and Cd, was concentrated around factories and densely populated areas. Maritime pollution, comprising Hg, Cr, Cd, and Zn, primarily occurred in the nearshore areas outside the bay. The findings of this study provide scientific data to the authorities in charge of sustainable coastal zone management in the South Yellow Sea.

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Section: Factor Apportionment and Contributionsmentioning

confidence: 86%

Characteristics and Sources of Heavy Metals Pollution in Surface Sediments: An Integrated Land–Sea Comparative Analysis in Dingzi Bay, South Yellow Sea

Gu,

Liu,

Yang

et al. 2024

Water

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“…The dissolved forms of heavy metals in intertidal sediments are the most readily taken up by organisms, exhibiting the highest bioavailability [7]. Heavy metals generally bind to sediments in four ways: 1 ⃝ adsorption, 2 ⃝ coprecipitation with hydrous iron and manganese oxides, 3 ⃝ complexation with organic molecules, and 4 ⃝ incorporation into crystalline minerals [25]. The adsorption process primarily involves chemical affinities, residual valences, and van der Waals forces that lead to adsorption onto clay minerals (such as kaolinite, illite, and montmorillonite), hydrous iron, and manganese oxides, as well as other substances (such as humic acids) [26].…”

Section: The Fractions Of Heavy Metal In Intertidal Sedimentsmentioning

confidence: 99%

“…Heavy metals are widely distributed in intertidal sediments, primarily originating from the weathering of rocks and minerals; sewage discharging from industrial, agricultural, and human activities; and dry and wet deposition of dust. Among these, industrial wastewater serves as a significant source of heavy metal pollution [2,3]. Heavy metals, due to their non-degradability, high accumulative nature, and potential biotoxicity, are widely distributed in various environmental media [4,5].…”

Section: Introductionmentioning

confidence: 99%

Migration and Transformation of Heavy Metal and Its Fate in Intertidal Sediments: A Review

Geng,

Xia,

et al. 2024

Processes

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Intertidal sediments are rich in biological resources, which are important for material circulation and energy exchange. Meanwhile, these areas can be treated as sinks as well as sources of coastal heavy metal pollutants. Due to the influence of the tide, the intertidal sediments are in a state of periodic flooding and exposure, and environmental factors such as dissolved oxygen, salinity and overlying water pressure are changeable. Heavy metals in sediments are prone to migration and transformation with the dynamic effects of tidal water and the changes in the environment factors, which increase the bioavailability of heavy metals. In this review, the characteristics of distribution and the bioavailability of heavy metals in intertidal sediments are described; the migration and transformation behavior of heavy metals and its influencing factors under tidal conditions are analyzed; and the mechanisms of heavy metal’s migration and transformation in the intertidal zone are summarized. Moreover, the bioaccumulation of heavy metal by organisms and the remediation techniques are discussed. Therefore, this review systematically summarizes the states of existence, the transport mechanisms, and the fate of heavy metals in the intertidal sediment, fills in the research gap of the cycling of heavy metal in the intertidal zone, and provides a theoretical basis for the control of heavy metal pollution.

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“…Some studies have employed this interpolation method to generate spatial mapping distributions of PC parameters [13,42,58,69,74], heavy metals [12,24,35,36,73], or both [24,54,61,71] and to discern spatial patterns and variations in water quality. A significant finding from these studies is the recognition of variations across seasons on water quality parameters and pollutants, influenced by natural factors such as high precipitation, seasonal runoff, and anthropogenic factors like shipping, fishing, tourism activities, and idol immersion activities.…”

Section: Interpolation Techniquesmentioning

confidence: 99%

“…The aforementioned studies include the development of a novel WebGIS observatory platform dedicated to risk assessment, emergency preparedness, and response [44]. Additionally, efforts have been made to pinpoint hotspots of PAH pollution using Voronoi maps and Fuzzy Membership Functions [78], conduct source-ecological risk assessments by establishing geochemical baseline values for metalloids [71], and assess heavy metal contamination in water and sediment through a cluster analysis, correlation coefficients, and a factor analysis [15]. Furthermore, a multi-thematic overlay analysis has identified priority pollution zones for protection [50].…”

Section: Complex Spatial Modelsmentioning

confidence: 99%

Assessing Contamination in Transitional Waters Using Geospatial Technologies: A Review

Arroyo-Ortega,

Chavarin-Pineda,

Torres

2024

IJGI

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Transitional waters (TWs) are relevant ecological and economical ecosystems that include estuaries, deltas, bays, wetlands, marshes, coastal lakes, and coastal lagoons and play a central role in providing food, protecting coastal environments, and regulating nutrients. However, human activities such as industrialization, urbanization, tourism, and agriculture are threatening these ecosystems, which results in contamination and habitat degradation. Therefore, it is essential to evaluate contamination in TW to develop effective management and protection strategies. This study analyses the application of geospatial technologies (GTS) for monitoring and predicting contaminant distribution in TW. Cartography, interpolation, complex spatial methods, and remote sensing were applied to assess contamination profiles by heavy metals, and persistent organic compounds, and analyze contamination indices or some physicochemical water parameters. It is concluded that integrating environmental and demographic data with GTS would help to identify critical points of contamination and promote ecosystem resilience to ensure long-term health and human well-being. This review comprehensively analyzes the methods, indicators, and indices used to assess contamination in transitional waters in conjunction with GTS. It offers a valuable foundation for planning future research on pollution in these types of waters or other similar water bodies worldwide.

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Coastal sediment heavy metal(loid) pollution under multifaceted anthropogenic stress: Insights based on geochemical baselines and source-related risks

Cited by 7 publications

References 50 publications

Characteristics and Sources of Heavy Metals Pollution in Surface Sediments: An Integrated Land–Sea Comparative Analysis in Dingzi Bay, South Yellow Sea

Characteristics and Sources of Heavy Metals Pollution in Surface Sediments: An Integrated Land–Sea Comparative Analysis in Dingzi Bay, South Yellow Sea

Migration and Transformation of Heavy Metal and Its Fate in Intertidal Sediments: A Review

Assessing Contamination in Transitional Waters Using Geospatial Technologies: A Review

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