kamran asgari1, hosein amini2   1- organic farming systems, wageningen university, wageningen, the netherlands   2- faculty of agriculture, khorasgan branch, islamic azad university, isfahan, iran     received: 5 february 2011 accepted: 23 november 2011         *corresponding author: email:[email protected]     abstract   effects of soil and atmosphere pollution on some heavy metals (fe, ...

BACKGROUND There is a possibility for the presence of Helicobacter pylori in vegetables due to their close contact with polluted water, soil and feces. OBJECTIVES This study was carried out to detect the presence of H. pylori in vegetables and salads in Iran. MATERIALS AND METHODS In total, 460 vegetable and salad samples were collected and transferred immediately to the laboratory. All sam...

The study focused on assessing the influence of rhamnolipids on the phytotoxicity of diesel oil-contaminated soil samples. Tests evaluating the seed germination and growth inhibition of four terrestrial plant species (alfalfa, sorghum, mustard and cuckooflower) were carried out at different rhamnolipid concentrations (ranging from 0 to 1.200 mg/kg of wet soil). The experiments were performed in...

β-glucosidase (E.C. 3.2.1.21), an enzyme involved in cellulose degradation, plays an important role in the soil organic carbon cycle. Cellulose is the most abundant organic compound in the biosphere so a product of its enzymatic hydrolysis is important as an energy source for soil microorganisms. Since β-glucosidase is very sensitive to different factors, determination of its activity might be ...

contamination of soil was investigated in this study from the tehran oil refining co. of iran. fifteen soil samples were collected at several points in the azimabad, 15 km south of tehran city, iran. samples were collected at depths of 0–30 cm. control sampleswere prepared to determinebackgroundlevels ofsoil contaminationwithpetroleumhydrocarbonsfor comparison with contaminatedsites. total petr...

A study was carried out to investigate the effects of municipal wastewater treatments on physical and chemical properties of saline soil. Recently, the amounts of wastewater are sharply increasing and the kinds of pollutants are also varied as the world wide industry is being developed incessantly. Soil samplings of 0-20 cm depth were from Segzi plain in Isfahan province (the center of Iran). T...

Liquids coming from different sources like wastewaters, agricultural and industrial activities and leakages of chemical substances often have high concentration of chemical compositions and the osmotic gradient generated around such sources causes a considerable transmission of the Contamination. The steam transmitted by non-polluted soils moves to polluted masses, causing an increase in the vo...

In this study, selected statistical methods (Discriminant analysis, ANOVA, Correlation analysis and Principal component analysis) were used to determine the heavy metal accumulation and its controlling factor and to identify the origin of these metals in soil samples collected from two sites along the Khoshk River banks, Shiraz, Iran. For this purpose, 40 topsoil samples were collected and the ...