Assessment bioavailability of selected heavy metal concentration and biological control parameter changes in two soils (case study: polluted and non-polluted sites in Iran)
Journal Title: Scientific Journal of Environmental Sciences - Year 2015, Vol 4, Issue 5
Abstract
Heavy metal pollution of soil is a serious concern, because such metals have toxicological importance in ecosystems, animal and human health. Metal toxicity depends on the chemical forms in which they exist. The aim of this research is investigation of biological factors and chemical forms of zinc and cadmium in two soils. We used two types of soil (polluted and non-polluted) in pot experiments that were conducted under greenhouse condition (similar to actual condition) as randomized complete factorial design. In according to this aim, the effect of this different on the soil biological factors, chemical properties, cadmium and zinc speciation was investigated in 21 and 49 days after treatment ancubation. Speciation was assayed with four individual extraction methods (distilled water, Ca(NO3)20.2M, DTPA+TEA 0.005M and HNO3 4N) in the bulk soil. The results showed that elements extractable concentration is following that Zn and Cd (HNO3)> Zn and Cd (DTPA+TEA)> Zn and Cd (Ca (NO3)2)> Zn and Cd (distilled water) in two soils. By approximately 91% and 61% of zinc and cadmium concentration is extractable with HNO3, respectively. These results showed one of the factors that caused to dangerous decrease may be related to be in unavailable and residual forms.In this study, zinc is more percent than cadmium in unavailable forms (i.e extractable with HNO3).Non-polluted soil is more microbial activity than polluted soil. Polluted soil was less microbial respiration rate (44%) and dehydrogenase activity (50%) than non-polluted soil.
Authors and Affiliations
S. Bagheri*| Young researchers and elite club, Bandar Anzali branch, Islamic Azad University, Bandar Anzali, Iran., H. M. Hosseini| Associate Professor, Department of Soil Science Engineering, University College of Agriculture and Natural Resources, Tehran University, IRAN.
Keywords
Related Articles
- EP ID EP1317
- DOI 10.14196/sjes.v4i5.1555
- Views 475
- Downloads 42
In situ yields in primary productivity of sand mine ponds of the Otamiri River in a southeastern city of Nigeria
In situ yields inprimary productivity of sand mine ponds of the Otamiri River in Owerri,southeastern Nigeria was investigated during the wet and dry seasons of2012/2013. Eighteen sampling points designated as WC 1-WC 18...
The use of multi metric index for pollution tracing by use of geographic information system
Aquatic organisms are used extensively in water quality assessment and ecosystem health quantity scale in streams. Mohammad-Abad creek (Golestan Province) is accounting one of the tributary streams of Gorgan-Rood River....
Predictive model to monitor rate of dissolved chromium in soil and water influenced by permeability and linear velocity in phreatic aquifers
Predictive model to monitor the rate of dissolved chromium influenced by linear velocity and permeability has been developed, the model were developed to monitor the rate of traced metal chromium in phreatic aquifers, di...
Diurnal variability of water temperature, pH and DO in the underground type fish shelter
We newly developed artificial deep pool (ADP) that secures a shelter and habitat space in bottom of the pond for fish escape from unfavorable conditions in freshwater ecosystem. Because the ADP is an underground structur...
Low impact development and green infrastructure
Water is the main source of life for all living creatures and water resources should be protected from draining away. There are two main sources of water that is used for water supply such as ground water and surface wat...