Spatial distribution and sources of heavy metals in the sediment and soils of the Yancheng coastal ecosystem and associated ecological risks

Ni, Xin; Zhao, Guosong; Ye, Siyuan; Li, Guangxue; Yuan, Hongming; He, Lei; Su, Dapeng; Ding, Xigui; Xie, Lijuan; Pei, Shaofeng

doi:10.1007/s11356-022-23295-z

Cited by 6 publications

(5 citation statements)

References 87 publications

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“…The lower As index in the north and northeast may be attributable to dilution produced by greater water flow from upstream regions or changes in the local geology and soil composition. In addition, due to different hydrological and climatic conditions, the factors that determine the spatial distribution of heavy metals during the rainy season may differ from those during the dry season [62]. The Mn, Zn, Cu, Cr, Cd, and Pb are some of the common heavy metals found during the rainy season [63].…”

Section: Heavy Metalsmentioning

confidence: 99%

Surface water quality assessment in the Bach Dang river basin, Vietnam: using water quality index and geographical information system methods

Nguyen,

Tran,

Tap Van

et al. 2023

Environ. Res. Commun.

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The study evaluates the surface water quality of the Bach Dang river basin. During the rainy season, the temperature, pH, EC, BOD5, COD, coliforms, ammonium and phosphate values were 27–37 oC, 6.6–8.9, 300–2200 μS/cm, 5–25 mg/L, 5–26 mg/L, 0–3000 MPN/100mL, below 0.01 mg/L, and 0.02 mg/L, respective. During the rainy and dry seasons, Zn, Pb, Cr, As, Fe and Mn levels were below drinking water limits. In the rainy season, the water quality index varied from 76 to 91, signifying medium to excellent water quality. The most outstanding water quality sites were the QN12, QN18, and QN22. During the dry season, most areas had moderate to excellent (WQI values between 61 and 93), except for QN01, QN03, QN04, QN05, QN06, QN07, QN11, QN16, QN17, QN19, and QN23, where it dropped to moderate (61–73). The temperatures were greater and higher EC values in the southeast. The DO concentrations were higher in the northwest and southeast in both seasons. The southern and southeastern regions exhibited more excellent COD and BOD5 values than the western, southwest, north, and northeast regions. The ammonium concentrations were higher in the southeast. During the dry season, the phosphate levels exceeded the permissible limit in the west, southeast, east, and northeast. Coliforms were below acceptable in both seasons, with greater levels in the northwest and northeast during the dry season. In addition, the Zn and Pb are favorably associated with the As, Mn, ammonium and phosphate in the rainy season. The COD positively correlated with the coliforms and BOD5. In the dry season, the pH inversely correlated with the Pb and Fe positively. The ammonium correlated negatively with the DO and positively with the phosphates. The pH negatively connected with the alkalinity, while the As positively correlated with the BOD5 and COD.

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Section: Heavy Metalsmentioning

confidence: 99%

Surface water quality assessment in the Bach Dang river basin, Vietnam: using water quality index and geographical information system methods

Nguyen,

Tran,

Tap Van

et al. 2023

Environ. Res. Commun.

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“…The spatial distribution characteristics and spatiotemporal variability of heavy metals can be intuitively analyzed with multivariate statistical methods and geostatistical analysis methods [27,28] . Nickel et al explored the effects of land-use type and population on the distributions of Hg, Cd and Pb via multiple regression kriging and generalized linear models and reported that the accumulation of soil Pb decreased from 1995 to 2010 [29] .…”

Section: Introductionmentioning

confidence: 99%

Spatial-temporal variation and source analysis of heavy metal in urban and peri-urban soils：The case study of Beilun District (Ningbo, China) from 2015 to 2022

Zhang,

Hu,

Gao

et al. 2024

Preprint

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The soil environment plays an important role in urban ecosystems. To study the heavy metal contamination of soil in Beilun District, Ningbo, we collected soil samples from 60 points in urban and peri-urban areas of Beilun District and analyzed the spatiotemporal variation and sources of heavy metal pollution in various land-use types. The contents of heavy metals in green belts and woodland in 2022 were higher than those in 2015, while there was no significant change in agricultural land. The heavy metal contents in both years were mainly in the order green belts > agricultural land > woodland. The spatiotemporal analysis showed that heavy metal pollution in Beilun District was concentrated in five industrial areas, and there was a trend toward the disappearance of highly polluted points. The single-factor pollution index, pollution load index (PLI), and geoaccumulation index (Igeo) indicated that there was no significant heavy metal pollution in Beilun District, and individual elements at specific points showed slight pollution. The source analysis results showed that the main source of Hg is chemical, As is mainly derived from agricultural, Cr, Ni and Cu are mainly derived from natural, the main sources of Zn and Cd are electroplating and machinery activities, and the main source of Pb is traffic. This results specify a reference for future investigation on urban soil heavy metals, and the source apportionment results provide a scientific foundation for subsequent soil heavy metal pollution treatment.

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“…Most heavy metals settle in sediments, with only a minor fraction remaining dissolved in water (Liu and Dilinuer, 2014). Although extensive research covers the pollution characteristics, ecological risks, and origins of heavy metals in various ecological wetlands (Jiao et al, 2014;Ni et al, 2023;Wang X. M. et al, 2023;Kalani et al, 2021;Engin et al, 2015), arid zone wetlands have received less attention due to climatic challenges and habitat fragmentation. This study examines the western wetlands of Bosten Lake, China's largest freshwater lake in an arid region, a critical recharge zone for the Tarim River and an essential water resource for the Bayin'guoleng Mongol Autonomous Prefecture.…”

Section: Introductionmentioning

confidence: 99%

Characterization of heavy metal contamination in wetland sediments of Bosten lake and evaluation of potential ecological risk, China

Wang,

Aji,

et al. 2024

Front. Environ. Sci.

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In November 2023, twenty-two sediment samples were collected from the Bosten Lake wetland in Xinjiang to determine the concentrations of eight heavy metals: arsenic (As), cadmium (Cd), chromium (Cr), copper (Cu), mercury (Hg), nickel (Ni), lead (Pb), and zinc (Zn). This data was used to assess heavy metal contamination and potential ecological risks in the sediments using the Pollution Load Index (PLI) and the Potential Ecological Risk Index (RI). Additionally, multivariate statistical analysis and Positive Matrix Factorization (PMF) were employed to elucidate potential sources and their contributions to contamination. The following are the main conclusions: (1) average concentrations of Zn, Cd, Cr, Pb, and Hg in the sediments surpassed Xinjiang soil background levels by factors of 1.01, 3.58, 1.32, 1.94, and 1.53, respectively. (2) Sediments demonstrated severe pollution with Cd, slight pollution with Zn, Cr, Pb, and Hg, while Cu and Ni indicated mild pollution and As showed non-polluted levels. The overall PLI average (1.01) suggested slight contamination. (3) The descending order of average single ecological risk values were Cd, Hg, Pb, Cu, Ni, Cr, As, and Zn, with a comprehensive RI averaging at 184.07, signaling a moderate ecological risk. (4) Source apportionment revealed that Zn, Cu, Pb, and Ni were influenced by transportation and household waste emissions, while Cr and As were dictated by natural background levels. Hg predominately originated from fossil fuel combustion and Cd from agricultural activities. (5) Mixed sources accounted for the following percentage contributions to sediment heavy metal content: transportation and domestic waste (30.41%), natural background (25.88%), fossil fuel combustion (22.40%), and agricultural activities (21.31%). With anthropogenic inputs exceeding those of natural origins, it is imperative to prioritize the management of Cd, Hg, and Pb as primary pollutants within the region.

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Spatial distribution and sources of heavy metals in the sediment and soils of the Yancheng coastal ecosystem and associated ecological risks

Cited by 6 publications

References 87 publications

Surface water quality assessment in the Bach Dang river basin, Vietnam: using water quality index and geographical information system methods

Surface water quality assessment in the Bach Dang river basin, Vietnam: using water quality index and geographical information system methods

Spatial-temporal variation and source analysis of heavy metal in urban and peri-urban soils：The case study of Beilun District (Ningbo, China) from 2015 to 2022

Characterization of heavy metal contamination in wetland sediments of Bosten lake and evaluation of potential ecological risk, China

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