Heavy metal contamination in surface sediments of Yangtze River intertidal zone: An assessment from different indexes

Zhang, Weiguo; Feng, Huan; Chang, Jiang; Qu, Jianhua; Xie, Huaibei; Yu, Lizhong

doi:10.1016/j.envpol.2009.01.007

Cited by 548 publications

(244 citation statements)

References 38 publications

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“…Table 3 presents the heavy metal concentrations in sediment samples from the Yellow River and other selected rivers from the references. Comparison reveals that the concentrations of Cu were higher than those of other heavy metals in the South Yellow Sea, China (Yuan et al, 2012), Yellow River, China (Yuan et al, 2008), Yangtze Estuary, China (Zhang et al, 2009) and the middle reach of the Yellow River in present study. For specific heavy metals, Cu concentration was higher in this study than those in other studies, and Cr concentration was higher than that in Yellow River (Yuan et al, 2008) but lower than that in the Yangtze Estuary, China (Zhang et al, 2009).…”

Section: Heavy Metal Concentrations In Sedimentssupporting

confidence: 49%

Distribution and assessment of heavy metals in the surface sediment of Yellow River, China

Yan

Liu

Xie

et al. 2016

Journal of Environmental Sciences

148

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Large amounts of heavy metals discharged by industrial cities that are located along the middle reach of Yellow River, China have detrimental impacts on both the ecological environment and human health. In this study, fourteen surface sediment samples were taken in the middle reach of the Yellow River. Contents of Zn, Pb, Ni, Cu, Cr, Cd, As were measured, and the pollution status was assessed using three widely used pollution assessment methods, including the single factor index method, Nemerow pollution index method and potential ecological risk index. The concentrations of the studied heavy metals

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Section: Heavy Metal Concentrations In Sedimentssupporting

confidence: 49%

Distribution and assessment of heavy metals in the surface sediment of Yellow River, China

Yan

Liu

Xie

et al. 2016

Journal of Environmental Sciences

148

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“…Thompson and Oldfield, 1986). Numerous studies have demonstrated that magnetic techniques can be successfully used to monitor anthropogenic or geoanthropogenic pollution from surface soils (Dearing et al, 1996b;4 Jordanova et al, 2003;Qiao et al, 2011;Zheng and Zhang, 2008;Zhu et al, 2010), fossil fuel combustion (Heller et al, 1998), coastal areas (Dong et al, 2014;Zhang et al, 2009), urban dust (Bucko et al, 2011;Shilton et al, 2005;Shu et al, 2000;Xie et al, 1999;Zhu et al, 2010) and historical monuments (Schiavon and Zhou, 1996). Zhang et al (2012) show the first example for the use of magnetic measurements in detecting the iron-containing particles in the Shanghai subway system.…”

Section: Introductionmentioning

confidence: 99%

Granulometric and magnetic properties of deposited particles in the Beijing subway and the implications for air quality management

Cui

Zhou

Dearing

2016

Science of The Total Environment

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The subway system is an important traffic facility in Beijing and its internal air quality is an environmental issue that could potentially affect millions of people every day. Due to the intrinsic nature of rail abrasion in subway tunnels, iron-containing particles can be generated and become suspended in the subway environment. While some studies (e.g. Li et al., 2006) have monitored the in-train levels of PM2.5s (particles < 2.5 μm), there is a lack of systematic assessment of the concentration and characteristics of iron-containing particles in the Beijing subway system. Here we report results of a study on the granulometric and magnetic properties of particulate samples collected at different localities of the Beijing subway system. Our results show that the subway samples are characterized by the presence of very fine particles. Volume proportions of 6.1 ± 1.3 % for PM2.5s and 27.5 ± 6.1 % for PM10s (particles < 10 μm) are found in the bulk subway particulate samples. These samples exhibit a strong magnetic signal, which is approximately two orders of magnitude higher than that in naturally deposited particles collected in Beijing. Fine grained ferromagnetic and ferrimagnetic minerals (e.g. iron and magnetite, respectively) are identified from mineral magnetic measurements and scanning electric microscopy. The samples collected from the Beijing stations with platform screen doors are found to be magnetically stronger and finer than those without them, suggesting that platform screen doors have failed to block the fine iron-containing particulate matters released from the rail tunnel. Given the potential health consequences of fine suspended ironcontaining particles, our results have important implications for air quality management in the Beijing subway system. We here submit a manuscript entitled "Granulometric and magnetic properties of particulate matter in the Beijing subway and the implications for air quality management". This work reports our finding of very fine particle matters in the Beijing subway environment, which are characterized by distinctly strong magnetic signals compared to those in naturally deposited particles. We also found variation of magnetic PM in the subway environment with platform screen door designs.Considering the potential health consequences of fine suspended iron-containing particles identified with magnetic techniques, our results not only have important implications for air quality management in the Beijing subway system but also demonstrate a new way of assessing environmental quality in metropolitan cities with subways.Thank you for your consideration. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 2 ABSTRACT The subway system is an important traffic facility in Beijing and its internal air quality is an environmental issue that could potentially affect mill...

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“…Heavy metals are the most serious pollutants and can cause many detrimental diseases that result from their high toxicity, persistence, and bio-accumulation (Zhang et al 2009a;Hu et al 2013a;Zamani-Ahmadmahmoodi et al 2013). Heavy metal pollutants have been considered to be one of the most critical global pollutants and pose a serious threat to human health and natural ecosystems (Lotze et al 2006;Li et al 2007;Li et al 2009;Fang et al 2009;Arik and Yaldiz 2010;Deng et al 2010;Naser 2013;Zhang et al 2009b).…”

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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Heavy metal contamination in surface sediments of Yangtze River intertidal zone: An assessment from different indexes

Cited by 548 publications

References 38 publications

Distribution and assessment of heavy metals in the surface sediment of Yellow River, China

Distribution and assessment of heavy metals in the surface sediment of Yellow River, China

Granulometric and magnetic properties of deposited particles in the Beijing subway and the implications for air quality management

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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