Asian Science Citation Index is committed to provide an authoritative, trusted and significant information by the coverage of the most important and influential journals to meet the needs of the global scientific community.  
ASCI Database
308-Lasani Town,
Sargodha Road,
Faisalabad, Pakistan
Fax: +92-41-8815544
Contact Via Web
Suggest a Journal
Journal of Biological Sciences
Year: 2001  |  Volume: 1  |  Issue: 10  |  Page No.: 976 - 985

The Chemical Extractability and Mobility of Ni63 in Soil and Sludge

J. Nouri, B. J. Alloway and P.J. Peterson    

Abstract: A sludge was conducted to attain the chemical extractability and mobility of Ni63 in soil and sludge. The results of this sludge showed a variation in extractable Ni63 activity with different incubation times. The extractions from the spread columns within increase in time showed, the amount of water soluble Ni63 in the soil, sludge and soil mixtures decreased significantly. The percentage removal of organically bound Ni63 by DTPA varied during the eight weeks, while EDTA showed a higher percentage of removal with a correlation with plant uptake. In some cases water decreased the solubility of Ni63 with increasing time in soil, sludge and mixture columns. Organic matter also decreased the Ni63 concentrations in all mixtures. Nitric acid digestion was used as a method of total recovery of Ni63 from all columns and 86-94% of the initial Ni63 was recovered in leachates from the soil and soil/sludge mixtures a greater proportion of cationic species of Ni63 than non cationic special were present, but in the sludge only leachates the reverse was true after 8 weeks. Organic matter content of soil increased by incorporation of sewage sludge may help to reduce the mobility of nickel.

Cited References   |    Fulltext    |   Related Articles   |   Back
  Related Articles

Copyright   |   Desclaimer   |    Privacy Policy   |   Browsers   |   Accessibility