Comprehensive assessment of heavy metal contamination in sediment of the Pearl River Estuary and adjacent shelf

Yang, Yongqiang; Chen, Fanrong; Zhang, Ling; Liu, Jinsong; Wu, Shijun; Kang, Mingliang

doi:10.1016/j.marpolbul.2012.04.024

Cited by 230 publications

(91 citation statements)

References 58 publications

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“…Moreover, AVS concentrations among stations were very different even during the same sampling period. Therefore, it is impossible to find out all the factors causing these phenomena since the dissolved sulfate concentration, organic matter availability, SRB community size, temperature, and even plants are all important variables for the fate and dynamics of AVS (Machado et al, 2008;Yang et al, 2012).…”

Section: Distribution Characteristics Of Avsmentioning

confidence: 99%

“…Heavy metal concentrations in aquatic ecosystems have increased considerably due to the inputs of industrial waste, sewage runoff, and agriculture discharges (Prica et al, 2008;Yang et al, 2012). Sediments are the main sink for heavy metals in aquatic ecosystems; however, when environmental conditions such as pH or sediment redox potential change, sediments may transform to a source of heavy metals (van Den Berg et al, 1999;Wilson and Chang, 2000;Prica et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Acid-volatile sulfide and simultaneously extracted metals in surface sediments of the southwestern coastal Laizhou Bay, Bohai Sea: Concentrations, spatial distributions and the indication of heavy metal pollution status

Zhuang

Gao

2013

Marine Pollution Bulletin

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a b s t r a c tSurface sediments were collected from the coastal waters of southwestern Laizhou Bay and the rivers it connects with during summer and autumn 2012. The acid-volatile sulfide (AVS) and simultaneously extracted metals (SEM) were measured to assess the sediment quality. The results showed that not all sediments with [SEM]-[AVS] > 0 were capable of causing toxicity because the organic carbon is also an important metal-binding phase in sediments. Suppose the sediments had not been disturbed and the criteria of US Environmental Protection Agency had been followed, heavy metals in this area had no adverse biological effects in both seasons except for few riverine samples. The major ingredient of SEM was Zn, whereas the contribution of Cd -the most toxic metal studied -to SEM was <1%. The distributions of AVS and SEM in riverine sediments were more easily affected by anthropogenic activity compared with those in marine sediments.

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Section: Distribution Characteristics Of Avsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Acid-volatile sulfide and simultaneously extracted metals in surface sediments of the southwestern coastal Laizhou Bay, Bohai Sea: Concentrations, spatial distributions and the indication of heavy metal pollution status

Zhuang

Gao

2013

Marine Pollution Bulletin

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“…Many of the discharged metallic pollutants have deposited in the sediments; however, when environmental conditions (pH, redox potential, and others) change, settled metals in sediments may break free to the water, making the sediments act as an internal source of trace metals (Morgan et al 2012;Morse and Rickard 2004;Van Den Berg et al 1999). Heavy metals are considered as one of the most serious contaminants Responsible editor: Céline Guéguen of the ecosystem due to their bioaccumulation, biomagnifications, and even increasing the exposure of human (Prica et al 2008;Yang et al 2012). Thus, the contents of these pollutants in sediments are often monitored to provide information for the evaluation of environmental health risks (Gao and Chen 2012;Gao et al 2013;Long et al 1995).…”

Section: Introductionmentioning

confidence: 99%

Assessment of sediment quality based on acid-volatile sulfide and simultaneously extracted metals in heavily industrialized area of Asaluyeh, Persian Gulf: concentrations, spatial distributions, and sediment bioavailability/toxicity

Arfaeinia

Nabipour

Ostovar

et al. 2016

Environ Sci Pollut Res

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Sediment samples from the coastal area of Asaluyeh harbor were collected during autumn and spring 2015. The acidvolatile sulfide (AVS) and simultaneously extracted metals (SEMs) were measured to assess the sediment quality and potential ecological risks. The average concentrations (and relative standard deviation (RSD)) of AVS in the industrial sediments were 12.32 μmol/g (36.91) and 6.34 μmol/g (80.05) in autumn and spring, respectively, while in the urban area, these values were 0.44 μmol/g (123.50) and 0.31 μmol/g (160.0) in autumn and spring, respectively. The average concentrations of SEM (and RSD) in the industrial sediments were 15.02 μmol/g (14.38) and 12.34 μmol/g (20.65) in autumn and spring, respectively, while in the urban area, these values were 1.10 μmol/g (43.03) and 1.06 μmol/g (55.59) in autumn and spring, respectively. Zn was the predominant component (34.25-86.24 %) of SEM, while the corresponding value for Cd, much more toxic ingredient, was less than 1 %. Some of the coastal sediments in the harbor of Asaluyeh (20 and 47 % in autumn and spring, respectively) had expected adverse biological effects based on the suggested criterion by United States Environmental Protection Agency (USEPA), while most stations (80 and 53 % in autumn and spring, respectively) had uncertain adverse effects.

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“…At the same time, this soil survey also found that the overstandard ratio in oil-producing regions in the 494 samples is 23.6 %. 1 Heavy metal contamination in estuarine and coastal areas has expanded in China because of the potential ecological effects and because of public concern for seafood safety in association with these metals (Feng et al 2011;Pan and Wang 2012;Yang et al 2012;Hu et al 2013b). Many previous studies have reported that heavy metal contamination has occurred in river basins or estuaries due to the cause-effect relationship between human effects and the soil quality (Xiao et al 2011;Karim et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Contamination assessment of arsenic and heavy metals in a typical abandoned estuary wetland—a case study of the Yellow River Delta Natural Reserve

Xie

Sun

Zhang

et al. 2014

Environ Monit Assess

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Coastal and estuarine areas are often polluted by heavy metals that result from industrial production and agricultural activities. In this study, we investigated the concentration trait and vertical pattern of trace elements, such as As, Cd, Ni, Zn, Pb, Cu, and Cr, and the relationship between those trace elements and the soil properties in coastal wetlands using 28 profiles that were surveyed across the Diaokouhe Nature Reserve (DKHNR). The goal of this study is to investigate profile distribution characteristics of heavy metals in different wetland types and their variations with the soil depth to assess heavy metal pollution using pollution indices and to identify the pollution sources using multivariate analysis and sediment quality guidelines. Principal component analysis, cluster analysis, and pollution level indices were applied to evaluate the contamination conditions due to wetland degradation. The findings indicated that the concentration of trace elements decreased with the soil depth, while Cd increases with soil depth. The As concentrations in reed swamps and Suaeda heteroptera surface layers were slightly higher than those in other land use types. All six heavy metals, i.e., Ni, Cu, As, Zn, Cr, and Pb, were strongly associated with PC1 (positive loading) and could reflect the contribution of natural geological sources of metals into the coastal sediments. PC2 is highly associated with Cd and could represent anthropogenic sources of metal pollution. Most of the heavy metals exhibited significant positive correlations with total concentrations; however, no significant correlations were observed between them and the soil salt and soil organic carbon. Soil organic carbon exhibited a positive linear relationship with Cu, Pb, and Zn in the first soil layer (0-20 cm); As, Cr, Cu, Ni, Pb, and Zn in the second layer (20-40 cm); and As, Cr, Cu, Ni, Pb, and Zn in the third layer (40-60 cm). Soil organic carbon exhibited only a negative correlation with Cd (P<0.05), in the second and third layers. As, Cr, Cu, Ni, Pb, and Zn exhibited lower geoaccumulation index values (I geo values), which averaged less than 0 in the three soil layers, this finding indicates that the soils have remained unpolluted by these heavy metals. The mean concentrations of these trace elements were lower than Class I criteria. The degradation wetland restoration suggestions have also been provided in such a way as to restore the reserved flow path of the Yellow River. The results that are associated with trace element contamination would be helpful in providing scientific directions to restore wetlands across the world.

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Comprehensive assessment of heavy metal contamination in sediment of the Pearl River Estuary and adjacent shelf

Cited by 230 publications

References 58 publications

Acid-volatile sulfide and simultaneously extracted metals in surface sediments of the southwestern coastal Laizhou Bay, Bohai Sea: Concentrations, spatial distributions and the indication of heavy metal pollution status

Acid-volatile sulfide and simultaneously extracted metals in surface sediments of the southwestern coastal Laizhou Bay, Bohai Sea: Concentrations, spatial distributions and the indication of heavy metal pollution status

Assessment of sediment quality based on acid-volatile sulfide and simultaneously extracted metals in heavily industrialized area of Asaluyeh, Persian Gulf: concentrations, spatial distributions, and sediment bioavailability/toxicity

Contamination assessment of arsenic and heavy metals in a typical abandoned estuary wetland—a case study of the Yellow River Delta Natural Reserve

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