Fractionation of heavy metals and their uptake by vegetables growing in soils irrigated with sewage effluent

Farzana BASHIR; Muhammad TARIQ; Muhammad Hammad KHAN; Rauf Ahmed KHAN; Sadia ASLAM

Makale detayları

Fractionation of heavy metals and their uptake by vegetables growing in soils irrigated with sewage effluent

Yazarlar:

Farzana BASHIR | Muhammad TARIQ | Muhammad Hammad KHAN | Rauf Ahmed KHAN | Sadia ASLAM

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Engineering and Environmental Sciences 2014 Vol.38 Issue 1, pp.1-10

Belge Tipi:

Makale

Yayın Tarihi:

12/2013

Belge Dili:

Türkçe

Document ID (Org No.):

2000744528

Sıklık:

Üç Yıllık

eISSN:

1303-6157

pISSN:

1300-0160

Özet:

 

Fractionation of heavy metals helps to determine their binding form,  toxicity, and availability in terrestrial environments. Wastewater  irrigation may lead to the accumulation of these metals in soil and plants.  Wastewater irrigated soils and vegetables were collected from 6 sites in the  vicinity of Lahore and analyzed for cadmium, nickel, chromium, zinc,  manganese, cobalt, and copper. The quality of wastewater used for growing  crops was also determined. In soil, sequential extraction was adopted to  demarcate 5 metal fractions: exchangeable, acid-soluble, reducible,  oxidizable, and residual, which were quantified by inductively coupled  plasma optical emission spectrometry. The accumulations of these metals in  vegetables (spinach and bitter gourd) were also assessed and it was found  that concentrations of all studied toxic metals in edible parts of the  vegetables were above the critical level. The total metal contents in soil  were in the order of Mn > Co > Zn > Cr > Ni > Cu > Cd.  Correlation analysis between metal concentrations in different fractions of  soil and vegetables was performed at 95% and 99% confidence levels.  Positive and negative correlations were observed; positive values indicated  the bioavailability of these metal fractions to vegetables, while negative  values showed that metal concentrations in particular fractions were not  bioavailable to plants.

 

Fractionation of heavy metals helps to determine their binding form,  toxicity, and availability in terrestrial environments. Wastewater  irrigation may lead to the accumulation of these metals in soil and plants.  Wastewater irrigated soils and vegetables were collected from 6 sites in the  vicinity of Lahore and analyzed for cadmium, nickel, chromium, zinc,  manganese, cobalt, and copper. The quality of wastewater used for growing  crops was also determined. In soil, sequential extraction was adopted to  demarcate 5 metal fractions: exchangeable, acid-soluble, reducible,  oxidizable, and residual, which were quantified by inductively coupled  plasma optical emission spectrometry. The accumulations of these metals in  vegetables (spinach and bitter gourd) were also assessed and it was found  that concentrations of all studied toxic metals in edible parts of the  vegetables were above the critical level. The total metal contents in soil  were in the order of Mn > Co > Zn > Cr > Ni > Cu > Cd.  Correlation analysis between metal concentrations in different fractions of  soil and vegetables was performed at 95% and 99% confidence levels.  Positive and negative correlations were observed; positive values indicated  the bioavailability of these metal fractions to vegetables, while negative  values showed that metal concentrations in particular fractions were not  bioavailable to plants.

Makale detayları

Fractionation of heavy metals and their uptake by vegetables growing in soils irrigated with sewage effluent

Yazarlar: Farzana BASHIR | Muhammad TARIQ | Muhammad Hammad KHAN | Rauf Ahmed KHAN | Sadia ASLAM

Yayıncı: TUBITAK

Dergi: Turkish Journal of Engineering and Environmental Sciences 2014 Vol.38 Issue 1, pp.1-10

Belge Tipi: Makale

Yayın Tarihi: 12/2013

Belge Dili: Türkçe

Document ID (Org No.): 2000744528

Sıklık: Üç Yıllık

eISSN: 1303-6157

pISSN: 1300-0160

Sayı

Yazarlar:

Farzana BASHIR | Muhammad TARIQ | Muhammad Hammad KHAN | Rauf Ahmed KHAN | Sadia ASLAM

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Engineering and Environmental Sciences 2014 Vol.38 Issue 1, pp.1-10

Belge Tipi:

Makale

Yayın Tarihi:

12/2013

Belge Dili:

Türkçe

Document ID (Org No.):

2000744528

Sıklık:

Üç Yıllık

eISSN:

1303-6157

pISSN:

1300-0160