Geochemical Speciation, Risk Assessment, and Sources Identification of Heavy Metals in Mangrove Surface Sediments from the Nanliu River Estuary of the Beibu Gulf, China

Chen, Bin; He, Renqiang; Cai, Pingxiong; Huang, Guiqiu; Wang, Rui

doi:10.3390/su14159112

Cited by 16 publications

(6 citation statements)

References 51 publications

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“…The nature and bonds of metals in sediment were analyzed using a geochemical partitioning method of the sequential extraction process (SEP), proposed by the European Community Bureau of Reference (BCR), or the BCR-SEP procedures used in many studies [22][23][24][25][26]. The geochemical partition method has been applied in many studies to provide information such as i) characteristics of pollution sources, ii) evaluation of bioavailability and metal mobilization, and iii) identification of metal binding to assess metal accumulation, pollution, and transport mechanisms [27,28,29].…”

Section: Heavy Metals Sequential Extractionmentioning

confidence: 99%

Geochemical partitioning of Cu and Zn in Pelabuhanratu Bay sediment

Prartono,

Natih,

Atmadipoera

et al. 2024

BIO Web Conf.

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Activities such as fishing ports and power plants on the coast of Pelabuhanratu Bay have recently developed and hence, their input of metal-containing waste may influence the seawater quality of the bay as the fishing grounds. This study aimed to determine the potential sources (i.e., anthropogenic and natural) and pollution status in sediments. Sediment samples were collected once at 10 stations in the bay using a Van Veen grab. The geochemical partitioning of non-residual and residual phases of metals was used to assess the anthropogenic and natural sources, respectively. The status of metal contamination was evaluated by determining the geo-accumulation index (Igeo), contamination factor (CF), and pollution load index (PLI). Generally, Cu was dominant in residual fractions ranging 62.79-81.24%, while Zn ranged 39.56-66.02%. This suggests that Cu and Zn in Pelabuhanratu Bay are naturally sourced. Furthermore, the average geo-accumulation index of Cu was categorized as unpolluted (-0.86), and Zn was lightly polluted (0.87). The CF of Cu indicates the uncontaminated category (0.85), whereas Zn indicates a moderate contamination category (CF = 1.54). The pollution level (PLI) in Pelabuhanratu Bay is generally lightly polluted (PLI 1,135).

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Section: Heavy Metals Sequential Extractionmentioning

confidence: 99%

Geochemical partitioning of Cu and Zn in Pelabuhanratu Bay sediment

Prartono,

Natih,

Atmadipoera

et al. 2024

BIO Web Conf.

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“…In addition, Hg in the coastal bays of the northern Beibu Gulf mainly originated from the terrestrial input (Lao et al, 2022a). The highest concentrations of Hg were observed in summer, when the coastal current was strong due to the heavy rainfall during this period, which could erode a large number of land-based pollutants into the gulf (Lao et al, 2020;Lao et al, 2021b;Chen et al, 2022b), resulting in the high concentrations of Hg appearing in the whole water of the gulf (Figure 6B). However, although the coastal current was weaker in fall than that in summer, the current in the fall is still stronger than in other seasons (Lao et al, 2022c), resulting in the higher concentrations of Hg appearing in the coastal areas in the northern Beibu Gulf (Figure 6C).…”

Section: Contaminated Characteristics Of Heavy Metals In Seawater Of ...mentioning

confidence: 99%

Spatial and seasonal characteristics of dissolved heavy metals in the seawater of Beibu Gulf, the Northern South China Sea

et al. 2022

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Heavy metal contaminations in the marine environment are of considerable attention because of their high potential ecological effects and public concern for human health. However, the influencing factors for the large-scale distributions of heavy metals in Beibu Gulf, a newly developing industry and port in South China, are still unclear due to the lack of large-scale investigation. Here, a total of 871 samples in the 127 stations in the seawater of Beibu Gulf during spring, summer, fall and winter in 2020-2021 were analyzed for dissolved heavy metal concentrations and physicochemical parameters. The concentrations of heavy metals in the Beibu Gulf ranked following the order of Zn > Cu > Cr > As > Pb > Hg > Cd. Compared to other regions, the concentrations of Hg were at relatively higher levels, which were mainly influenced by the input of the transportation of water masses from the local and other regions; whereas the other heavy metals were at relatively lower levels. Seasonally variations in the concentrations of heavy metals were observed in the gulf, which is mainly influenced by human activities (i.e., shipping and mariculture activities) and seasonally hydrological conditions. Seasonal changes in the spatial distribution of heavy metals have been found in the gulf. The higher concentrations of heavy metals mainly occurred in the coastal bays or areas in summer whereas the higher concentrations were observed in the offshore areas during the other three seasons. This is mainly related to the seasonal changes of the water masses that affect the seawater of Beibu Gulf, which exhibits the dominant contribution of coastal current from the northern Beibu Gulf in summer, and the dominant contribution of west-Guangdong coastal current and SCS water during the other three seasons. The potential ecological risk index revealed that Hg is the main ecological risk factor in the gulf, and the heavy metal contamination in the gulf seems to be noticeable. This study highlights the seasonal changes of the water masses that affect the seawater of Beibu Gulf greatly affecting the large-scale distributions of heavy metals in the gulf.

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“…The geochemical speciation of heavy metals can also be used to identify the source of heavy metals. In the soils weathered from the parent rocks, most of the heavy metals mainly exist in the stable-state form, while the active state is mainly affected by human activities [41,42], but this feature is not fixed [43]. A single method often has certain limitations, so it is best to use a variety of methods to confirm the others.…”

Section: Introductionmentioning

confidence: 99%

Source and Migration Pathways of Heavy Metals in Soils from an Iron Mine in Baotou City, China

Wang,

Xu,

et al. 2024

Minerals

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The exploitation of iron ore could cause heavy metals pollution in the soils, which threatens the ecosystem and human health. In this study, soil, stream sediment, tailings, rock, and atmospheric deposition samples were collected from an iron mine in Baotou City. The concentrations of As, Cd, Cr, Cu, Hg, Ni, Pb, Zn, Al2O3, CaO, K2O, MgO, Na2O, SiO2, and Fe2O3, as well as the mineral composition and heavy metal speciation of the samples, were analyzed for pollution assessment and source identification of heavy metals. The results reveal that the concentration of Cu in the soils was significantly higher than the background value, and an unpolluted to moderately polluted state was the main pollution level. By analyzing the relationship between Cu/Al2O3 and CaO in different samples, as well as the characteristics of the chemical index of alteration (CIA), mineral composition, and the chemical speciation of Cu in soils and profiles, the results suggest that tailings were the source of Cu pollution in soils. The distribution characteristics of Cu and CaO in stream sediments indicated that hydraulic transport may be one of the main migration pathways. In addition, wind transport may also be a pathway of migration.

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Geochemical Speciation, Risk Assessment, and Sources Identification of Heavy Metals in Mangrove Surface Sediments from the Nanliu River Estuary of the Beibu Gulf, China

Cited by 16 publications

References 51 publications

Geochemical partitioning of Cu and Zn in Pelabuhanratu Bay sediment

Geochemical partitioning of Cu and Zn in Pelabuhanratu Bay sediment

Spatial and seasonal characteristics of dissolved heavy metals in the seawater of Beibu Gulf, the Northern South China Sea

Source and Migration Pathways of Heavy Metals in Soils from an Iron Mine in Baotou City, China

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