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Toxic metals in agricultural soils near the industrial areas of Bangladesh: ecological and human health risk assessment

Publication Date - 2019-09-21 00:00:00

Publication Title : Toxic metals in agricultural soils near the industrial areas of Bangladesh: ecological and human health risk assessment

Publicationed By : Dr. Md Saiful Islam

Publication Publication Date : 2019-09-21 00:00:00

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Publication Description :

This study was conducted to assess the potential ecological and human health risk of toxic metals  in agricultural soils near the industrial areas of Bangladesh. In this study, six toxic metals  (chromium, nickel, copper, arsenic, cadmium, and lead) were assessed in 58 soil samples of five  different sampling sites around the industrial areas of Jhenaidah and Kushtia districts in  Bangladesh. Toxic metals were measured using inductively coupled plasma mass spectrometer.  Potential ecological and human health risk were assessed through enrichment factor (EF), contamination  factor (Cf  i ), geoaccumulation index (Igeo), pollution load index (PLI), toxic unit analysis,  chronic daily intake through exposure pathway, hazard quotient, and hazard index. The mean  concentrations of Cr, Ni, Cu, As, Cd, and Pb were found to be 5.78, 21.0, 31.8, 8.05, 1.20, and  19.2 mg/kg, respectively. Metals concentrations were found below the recommended value set  by Dutch standard, Canadian guidelines, and Australian guidelines except Cd. Principal component  analysis indicates that most of the metals in agricultural soils are coming from industrial  sector. The mean values of EF, Igeo, Cf  i, PLI, and toxic units were found safe level for all metals  except Cd. In the view of potential ecological risk (PER), soils from all sampling sites indicated  moderate to very high PER. Total target hazard quotients for all the studied metals in total sampling  sites were <1 and cancer risk values were <106 indicating low noncarcinogenic and cancer  risk for adult and children.



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