Pollution and potential ecological risk assessment of heavy metals in a lake

• Autorzy: Ntakirutimana T. , Du G. , Guo J. , Gao X. , Huang L.
• Języki publikacji: EN

Abstrakty

EN

This research was undertaken in order to determine and analyze various heavy metals present in sediments taken from Lake Donghu. Six heavy metals: arsenic (As), cadmium (Cd), chromium (Cr), copper (Cu), lead (Pb), and zinc (Zn) were determined by inductively coupled plasma-atomic emission spectroscopy (ICPAES). Relative enrichment factors and potential ecological risk indexes were used to study the pollution status of heavy metals in sediments and assess their potential ecological risk to the environment. Sediment enrichment factors of heavy metals were found in the following order Cr > As > Cd > Zn > Cu > Pb. Potential ecological risk indices for heavy metals were: Cd > As > Cr > Cu > Pb > Zn. The calculated potential ecological risk indices showed that the lake was polluted by heavy metals. Cd had moderate potential ecological risk to the ecological environment and was the main contributor to potential toxicity response indices for various heavy metals in Lake Donghu. Analysis of variance (ANOVA) was used to establish the significance of variations in heavy metals. The mean seasonal concentrations of metals showed that there were significant differences among seasons and sampling sites (P<0.05). The cause of pollution in Lake Donghu could be associated with industrial and human activities. We proposed strategies that can be applied in order to prevent accumulation of heavy metals in the lake.

Słowa kluczowe

EN

pollution; environment pollution; potential risk; ecological risk; risk assessment; heavy metal; lake; sediment; Lake Donghu

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 2013
• Tom: 22
• Numer: 4
• Opis fizyczny: p.1129-1134,fig.,ref.

Twórcy

autor

Ntakirutimana T.

• Faculty of Urban Construction and Environmental Engineering, Chongqing University, P.R.China
• Key Laboratory of Three Gorges Reservoir Region’s Eco-environment, Ministry of Education, Chongqing University, P.R.China

autor

Du G.

• Faculty of Urban Construction and Environmental Engineering, Chongqing University, P.R.China
• Key Laboratory of Three Gorges Reservoir Region’s Eco-environment, Ministry of Education, Chongqing University, P.R.China

autor

Guo J.

• Key Laboratory on Water Environment of Reservoir Watershed, Chinese Academy of Sciences, Chongqing 400045, P.R.China

autor

Gao X.

• Faculty of Urban Construction and Environmental Engineering, Chongqing University, P.R.China

autor

Huang L.

• Faculty of Urban Construction and Environmental Engineering, Chongqing University, P.R.China
• Key Laboratory of Three Gorges Reservoir Region’s Eco-environment, Ministry of Education, Chongqing University, P.R.China

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