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Immobilization of Pb by organic and inorganic phosphate and calcium sources in an acidic Pb-polluted soil amended with cow manure
Get PDFBackground: Chemical stabilization of heavy metals in acidic soil is one of the important points in
environmental pollution. Thus, this research was conducted to investigate the effect of organic and
inorganic amendments on lead (Pb) immobilization in the Pb-polluted soil.
Methods: Treatments were consisted of applying cow manure (0, 15, and 30 t/ha), and applying cow
bone and phosphate rock (5% (W/W)) in the Pb (0, 800, and 1600 mg Pb/kg soil)-polluted soil. The
plant used in this experiment was canola. After 70 days, the plants were harvested and soil and plant Pb
concentration was measured using atomic absorption spectroscopy (AAS).
Results: Applying 15 and 30 t/ha of cow manure in the Pb (1600 mg Pb/kg soil)-polluted soil significantly
decreased the soil Pb concentration by 14.3 and 17.2%, respectively. For plant Pb concentration, it was
increased by 11.8 and 15.1%, respectively. A significant decrease in plant Pb concentration was measured,
when the soil under cultivation of the plant was amended with 5% (W/W) phosphate rock powder.
For the plants grown on the soil, which was amended with 5% (W/W), the plant Pb concentration
decreased by 17.6%. In addition, applying organic and inorganic amendment significantly decreased the
bio-concentration factor (BCF), while the soil microbial respiration increased.
Conclusion: The results of this study showed that applying 15 and 30 t/ha cow manure or calcium and
phosphorus sources such as cow bone and phosphate rock powder (5% (W/W) can decrease the soil Pb
availability and prevent the Pb translocation from soil to plants.
Keywords: Environmental pollution, Soil, Lead, Soil microbiolog
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Get PDFبوميان و مهاجرين ديجيتال در آموزش الكترونيك: بررسی چالش ها، تقابل ها و تفاوت های آموزش الکترونیک در میان دانشجویان مقطع کارشناسی ارشد (بوميان ديجيتال) و اعضای هیات علمی (مهاجرين ديجيتال) دانشکده پرستاری و مامایی دانشگاه علوم پزشکی اصفهان
Get PDF=Natives and Digital Immigrants in E-Learning: Evaluating the Challenges, Conflicts and Differences Between E-Learning Among Master Students (Digital Natives) and Faculty Members (Digital Immigrants), Faculty of Nursing and Midwifery, Isfahan University of Medical Sciences
Get PDF=The relationship between serum zinc level and ferritin in thalassemic major patients referred to thalassemia centers in Be’sat clinic of kerman university of medical sciences in 2020
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