Potential Ecological Risk Assessment of Heavy Metal Pollution in Sediments of the Yangtze River Within the Wanzhou Section, China

Fu, Chuan; Guo, Jinsong; Pan, Jie; Qi, Junsheng; Zhou, Weisheng

doi:10.1007/s12011-008-8300-y

Cited by 75 publications

(41 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The reducible (8.20-28.0%, mean 16.0%) and oxidisable (0.00-13.5%, mean 5.8%) fractions are smaller. A dominance of chromium in residual phase has been reported in several other riverine systems of India (Singh et al, 2005) and world (Lin et al, 2003;Lasheen and Ammar, 2009;Fu et al, 2009;Davutluoglu et al, 2011). Though a major portion of Cr is present in the residual phase still the percentage of Cr in the non residual forms collectively is significant and chances of its leaching from the sediments as a result of slight environmental perturbation cannot be ignored.…”

Section: Metal Fractionation In Sedimentsmentioning

confidence: 97%

Trace metal fractionation in water and sediments of an urban river stretch

Kumar

Rani

Gupta

et al. 2014

Chemical Speciation & Bioavailability

View full text Add to dashboard Cite

In this study, the fractionation and ecotoxic potential of Cr, Ni, Cu and Pb in water and sediments of the river Yamuna (Delhi stretch) is presented. The river water is used for various purposes such as irrigation, industrial, domestic and drinking. The investigations suggest that the availability of metals in water follows the sequence Ni>Cr>Pb>Cu whereas a different pattern (Pb>Cu>Ni>Cr) is observed in sediments. Statistically significant spatial variations are indicated by two-way ANOVA in different geochemical forms of the metals and physicochemical parameters of water and sediments of the river Yamuna. Principal component analysis (PCA) suggests a similar source for all four metals probably from the sewage from municipal drains. PCA also indicates some independent sources of Cu and Pb. The hot spots were identified using hierarchical cluster analysis considering bioavailable forms of the metals in water and sediments as objects and the sampling sites as variables. Risk assessment code analysis indicates that metals generally pose medium to high risk at different sites. However, at a few locations either Ni or Pb cross the level of very high ecological risk.

show abstract

Section: Metal Fractionation In Sedimentsmentioning

confidence: 97%

Trace metal fractionation in water and sediments of an urban river stretch

Kumar

Rani

Gupta

et al. 2014

Chemical Speciation & Bioavailability

View full text Add to dashboard Cite

show abstract

“…The accumulation of heavy metals has been a major environmental problem in the TGR area, with Cd being particularly prominent [20,[34][35][36], which could be attributed to the higher Cd values of the TGR soils and combustion of local coals rich in Cd [37,38]. Compared with locations outside of China, the concentrations of the TMs in this study (except for Cd) were slightly lower than those in Noshiro, a remote site on the west coast of Japan, where relatively higher concentrations are caused by long-distance transport of contaminants from the Asian continent.…”

Section: Concentrations and Fluxesmentioning

confidence: 99%

Wet Deposition of Trace Metals at a Typical Urban Site in Southwestern China: Fluxes, Sources and Contributions to Aquatic Environments

et al. 2017

Self Cite

View full text Add to dashboard Cite

Abstract:In this study, we quantified the atmospheric wet deposition (AWD) of 13 trace metals (TMs) and estimated their potential effects on the surface water of the Three Gorges Reservoir in China. Precipitation was collected in Wanzhou in southwestern China from March 2015 to February 2016. The concentrations and fluxes of the 13 TMs were in the ranges of 0.16-9.44 µg L −1 and 0.18-10.22 mg m −2 yr −1 , respectively, in the order Al > Zn > Fe > Ba > Pb > Mn > Ti > Cd > Cu > As > V > Ni ≈ Cr. Using principal component analysis, it was found that Al, Ba, Cu, Fe, Mn and Zn were mainly derived from a mixture of soil and road dust, As, Cd, Cr, Pb and Ti primarily originated from the local industries, and Ni and V were related to diesel and gasoline combustion, including both vehicle exhaust emissions and ship emissions from the nearby Yangtze River. The estimated TM inputs to the Three Gorges Reservoir were 11.1, 11.0, 5.7, 5.3, 4.5, 2.7, 2.5, 1.5, 1.0, 0.7, 0.5, 0.2, and 0.2 t yr −1 for Al, Zn, Fe, Ba, Pb, Mn, Ti, Cd, Cu, As, V, Ni and Cr, respectively. The AWD TM fluxes in Wanzhou were lower than those in metropolises and their inputs were limited for surface water of the Three Gorges Reservoir. However, Cd was strongly enriched in precipitation and rainstorms greatly increased the surface water concentrations of Cd and Pb. Therefore, the behavior of Cd and Pb in southwestern mountain areas of China, including emission, transport, transformation, and their ecological effects, should be given more attention in future studies.

show abstract

“…Among all the major impacts threatening ecosystems, heavy metals and metalloid play a very important role (Fu et al 2009;Zhang et al 2012). Because they are nondegradability and bio-concentration and bio-magnify, heavy metals and metalloid pose an ecological risk to organisms and ecosystems (Lai et al 2005;Townsend et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Speciation and ecological risk of heavy metals and metalloid in the sediments of Zhalong Wetland in China

Zang

Xiao

et al. 2013

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

A total of 271 sediments samples from the Zhalong Wetland were analyzed for concentration and distribution of Hg, Cd, As, Cu, Pb, Zn, Cr, and Zn; their speciation according to the modified European Community Bureau of Reference sequential extraction procedures and their ecological risk based on Lars Hakanson's potential ecological risk assessment and risk assessment code were made. The results can be summarized as the followings: (1) Concentrations of all metals measured were above soil background values of Songnen Plain, and their spatial distributions were distinctly different. The concentrations of metals (except Pb) were high in the east, followed by the north, and were relatively low in the core zone and south. The concentration of Pb was high in the north, south, and west, compared with low concentration in the core zone and east. (2) The dominant proportion of Pb, Zn, and Cr was in the residual fraction, suggesting that they were environmental stable. The concentrations of Cu and As in the reducible fraction, the concentration of Cd in the acidsoluble fraction, and the concentration of Hg in the oxidizable fraction were relatively high, indicating they had greater environmental effects. (3) The evaluation of the ecological risk showed that Cd, Hg, and As had relatively high ecological risk index, especially the ecological risk of Cd should be paid attention to. In general, the ecological risk of the heavy metals and metalloid by zone was experimental zone [ buffering zone [ ecological tourism zone [ core zone.

show abstract

Potential Ecological Risk Assessment of Heavy Metal Pollution in Sediments of the Yangtze River Within the Wanzhou Section, China

Cited by 75 publications

References 17 publications

Trace metal fractionation in water and sediments of an urban river stretch

Trace metal fractionation in water and sediments of an urban river stretch

Wet Deposition of Trace Metals at a Typical Urban Site in Southwestern China: Fluxes, Sources and Contributions to Aquatic Environments

Speciation and ecological risk of heavy metals and metalloid in the sediments of Zhalong Wetland in China

Contact Info

Product

Resources

About