Riverine Composition and Estuarine Geochemistry of Particulate Metals in China—Weathering Features, Anthropogenic Impact and Chemical Fluxes

Zhang, J.; Liu, Changling

doi:10.1006/ecss.2001.0879

Cited by 985 publications

(391 citation statements)

References 35 publications

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“…Based on a study conducted by Zhang and Liu [20], an EF value between 0.5 and 1.5 suggests that the metal may be entirely from crustal materials or natural weathering processes. However, an EF greater than 1.5 suggests that a significant portion of the metal originated from non-crustal or anthropogenic processes.…”

Section: Enrichment Factormentioning

confidence: 99%

“…The distribution of heavy metals in sediments adjacent to populated areas can provide researchers with evidence of the anthropogenic impact on ecosystems and assist in assessing the risks associated with discharged human waste [17]. Therefore, problems in aquatic systems due to heavy metals pollution have been extensively studied [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

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Heavy metal sources and associated risk in response to agricultural intensification in the estuarine sediments of Chaohu Lake Valley, East China

Tang

Shan

Zhang

et al. 2010

Journal of Hazardous Materials

205

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a b s t r a c tIn this study, the source and risk associated with heavy metals in the estuarine sediments of Chaohu Lake Valley in East China were studied. The results demonstrated that most metal contents (Cd, Pb and Zn) increased continuously from 0.21, 8.05 and 73.76 mg/kg in the substrate to 0.33, 17.20 and 100.22 mg/kg in the surface sediments on average, respectively, in all ten estuaries evaluated. In addition, the high proportion of chemically reactive forms of Cd (18.10-33.60%) implied a moderately high risk, while the risk associated with Pb and Zn was moderate in most estuaries. Enrichment factor (EF) and cluster analysis (CA) were conducted to assess the metal sources. The EF values of Cd, Pb and Zn (4.96, 3.68 and 2.25, respectively) indicated that they had accumulated in the estuarine sediments. Additionally, CA suggested that their primary sources were anthropogenic, namely the extensive use of fertilizers. Therefore, heavy metal pollution due to agricultural intensification in Chaohu Lake Valley should be taken into account during the formation of valley management strategies for the water environment.

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Section: Enrichment Factormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Heavy metal sources and associated risk in response to agricultural intensification in the estuarine sediments of Chaohu Lake Valley, East China

Tang

Shan

Zhang

et al. 2010

Journal of Hazardous Materials

205

View full text Add to dashboard Cite

show abstract

“…Generally, an EF value of about 1 suggests that a given metal may be entirely from crustal materials or natural weathering processes (Zhang and Liu, 2002). Nevertheless, a slight positive deviation of EF value from unity may not arise from anthropogenic activities, for the natural difference in elemental composition between a pristine sediment and the reference Earth's crust used in EF calculation could also cause it.…”

Section: Introductionmentioning

confidence: 99%

Concentration and fractionation of trace metals in surface sediments of intertidal Bohai Bay, China

Gao

2012

Marine Pollution Bulletin

148

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“…According to [34], EF values smaller than 1.5 suggest that heavy metals derived from mainly natural sources such as weather processes, while EF values greater than 1.5 suggest that the sources are more likely to be anthropogenic. [35] divided the contamination into different categories based on EF values.…”

Section: Discussionmentioning

confidence: 99%

Assessment of Heavy Metals Associated with Bottom Sediment of Asejire Reservoir, Southwest Nigeria

Godwin

2016

ILNS

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ABSTRACT.A study on the characteristic of sediment quality of Asejire Reservoir was conducted to evaluate the heavy metal content of the reservoir. Twenty stations were selected, samples and analyzed using standard methods. The result showed that the sediment was slightly acidic across the study stations, with low conductivity and organic matter content. The heavy metals order of dominance was: Fe>Pb>Cu>Zn>Mn>Al>Ba>Ni>Cr. The mean concentration levels of all the heavy metals were lower than mean background value except Fe, Cu and Pb. However, calculated Enrichment Factor (EF) values for all the heavy metals investigated showed that they were less than 1.5 (<1.5), suggesting that the heavy metals were all derived mainly from natural sources such as bedrock materials and weathering processes.

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Riverine Composition and Estuarine Geochemistry of Particulate Metals in China—Weathering Features, Anthropogenic Impact and Chemical Fluxes

Cited by 985 publications

References 35 publications

Heavy metal sources and associated risk in response to agricultural intensification in the estuarine sediments of Chaohu Lake Valley, East China

Heavy metal sources and associated risk in response to agricultural intensification in the estuarine sediments of Chaohu Lake Valley, East China

Concentration and fractionation of trace metals in surface sediments of intertidal Bohai Bay, China

Assessment of Heavy Metals Associated with Bottom Sediment of Asejire Reservoir, Southwest Nigeria

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