The effect of cow manure application on the distribution of Lead fractionation in contaminated

Hoseinian Rostami, Gh. (2013) The effect of cow manure application on the distribution of Lead fractionation in contaminated. Masters thesis, University of Zabol.

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The accumulation of heavy metals in soil is a drastic environmental risk. Metals are present in soil in different chemical forms, which influence their reactivity and hence their mobility and bio-availability. A study, to determine the effect of Cow Manure on Lead availability and their redistribution among soil fractions, pot experiments were conducted. Chemical properties such as pH, EC, CEC and Lime of concerned soils are also analyzed. Cow Manure (0, 1, 5%) was added to soil contaminated with different concentrations of Pb (0, 100, 200mg kg-1 soil, added as pb(NO3)2) at 60% field moisture. The amount of Pb was determined from the soil after 4 amounts of incubation time using sequential extraction procedure. Tessier method was exerted to decompose the metal content into exchangeable, acid extractable, reducible ,oxidizable fractions and Residual fraction was determined in aqua regia digest. Fractionation studies on soils amended by different amounts (1, 5%) of Cow Manure with single metal nitrate, showed that, after four months, Pb were bound mostly to the acidextractable, reducible and oxidisable fractions in amended soil (p<0.05). Also the application of Cow Manure (CM) levels significantly decline the exchangeable and residual fractions (p<0.05). Whereas in control soil, pb was mainly occurred in the acid-extractable and residual fractions.

Item Type: Thesis (Masters)
Uncontrolled Keywords: Fractionation, Metal Bio-availability, Pollution, Organic Amendment, Sequential Extraction
Subjects: S Agriculture > S Agriculture (General)
T Technology > TD Environmental technology. Sanitary engineering
Depositing User: admin admin1 admin2
Date Deposited: 30 Jan 2016 09:42
Last Modified: 30 Jan 2016 09:42

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