Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : soil pollution


Heavy Metals Accumulation in Two Types of Tree Leaves from Baghdad Urban Areas

Maha A. Mahmood; Athmar A.M. AL-Mashhady; Ali N. Ali

Engineering and Technology Journal, 2019, Volume 37, Issue 3C, Pages 350-355
DOI: 10.30684/etj.37.3C.8

It is well known that environmental pollution by many heavy
metals is a serious problem to the natural ecosystem due to their toxic
effects. Most heavy metals such as Cu, Mn, Fe, and Zn are needed by
various organisms but at certain concentrations is very necessary for
both plants and animals. However, it has been suggested that ever green
plant trees can assist in controlling such pollution via various methods
where one method is the ability of these plant trees to absorb heavy
metals from contaminated soils. The current work was designed to assess
Cd, Mn and Pb plant content in two tree species (Eucalyptus sp. and
Albizia sp.) collected from Tourist Baghdad Island (TBI) situated in AlFh’hama region. It seems very obvious that these examined trees can be
regarded as certain heavy metals eliminator where eucalyptus tree has
shown considerable ability in removing all examined heavy metals which
were significantly higher than that of Albizia trees.

Ecological Risk Assessment of Chromium Pollution in the Soil of Industrial Area within Baghdad City

Rawnaq S. Mahdi; Athmar A.M. AL-Mashhady

Engineering and Technology Journal, 2018, Volume 36, Issue 1C, Pages 49-53
DOI: 10.30684/etj.36.1C.8

Thirty-five soil samples were collected from the Tanning Factory Industrial District within Baghdad city to investigate the soil pollution occur through four directions of the tanning plant. The soil samples exhibited high concentrations of Cr than the reported values of worldwide mean of unpolluted soils. The geoaccumulation index showed that the soil samples were moderately polluted by Cr at the north of the factory while the soil sample showed extremely polluted at the south and east of the factory. Moreover, the soil samples collected from west of the factory were strongly polluted. The result of the calculated enrichment factor (64.52-1075.22) showed to extremely high enriched and suggesting a significant role of anthropogenic pollution because of various industrial activities by the Tanning Factory.

A Comparative Study of Total and Bioavailable Cadmium and Zinc Concentrations and Distributions among Different Land Use Types within Baghdad City

Abdul Hameed M.J. Al Obaidy; Riyad Al-Anbari; Fatima H. Abd Ali

Engineering and Technology Journal, 2016, Volume 34, Issue 4, Pages 685-697

Total and bioavailable levels of Cd and Zn in topsoil (0–20) cm taken from four different land use types (residential, commercial, industrial and mixed) of the urban area of Bagdad, Iraq, were analyzed by the flame atomic absorption spectrophotometer. This was with a view to appraising the influence of a variety of anthropogenic activities on heavy metal contamination of the urban soil. Results showed that the range of Cd and Zn were (0.00-6.35) mg/kg and (5.20-219.95) mg/kg respectively. As compared with the calculated world average of unpolluted soils, cadmium displays higher concentrations while the zinc concentration was within this common world range. The level of pollution was assessed using geoaccumulation index (Igeo), for all land use types Igeo decreasing order, followed the order of (Cd> Zn). The relative bioavailability for Cd, and Zn has been observed as 2.46-5 % and 2.80-9.78 % respectively. It can be concluded that, although total concentrations of the examined heavy metals were generally high, but at the same time the bioavailable ones were relatively low. This can be an indicator that with the recent environmental factors (alkaline to sub-alkaline soil pH), the toxicity of heavy metals to humans was in its minimum level.