Geochemical Content of Lead and its Distribution in Soil of Kirkuk City/Northern Iraq
DOI:
https://doi.org/10.25130/tjps.v22i1.617Abstract
The current study includes determination of the concentrations of lead (Pb) in 18 specimen of Kirkuk city soil (K). Inductively Coupled Plasma - Mass Spectrometry (ICP-MS) technology has been used in the analysis of soil samples in laboratories Acme company in Canada. Results of chemical analysis of samples clarified a rise in average of lead in soil samples (26.11 ppm) compared with international average of soil (10 ppm) and with uncontaminated ones (15 ppm), and rise in its average in surface depth (30.2ppm) compared with the lower depths (17.97ppm), and decreases in its average as compared with local soils in other cities in Iraq. Factor analysis of the geochemical data for the samples above has been conducted and has been shown a presence of affinity and geochemical associations among Pb and both of potassium oxide and phosphorus penta oxide and also some elements such as phosphorus, cadmium, copper and zinc, as well as organic materials. Size analysis of the samples has confirmed that the concentration of Pb increases in the clay fraction in soils, and in a larger quantities than in the silty and sandy fractions. The value of Geoaccumulation index (Igeo) for samples of soil showed that it lies within the medium pollution category to non-pollution. Oxidation - reduction potential and the acidic function have helped to identify the prevailing metallic phase in the soils at the area of study, which is a type of Cerussite.
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