The quantitative and qualitative physic-chemical properties considered in more than 15 geographical sites were selected along the Iraqi coastline. The grain size analysis and the EC, pH, TDS, K, Na, Mg, Ca, HCO3, Cl, SO4 were estimated in the sediments sample. Three types of soil textures dominate which are sandy clay, sandy clay loam and clay loam were observed in the present study. The results show that the pH value ranges from7.67-8.19, EC (23-68.45 dS/m), TDS (14720-43808 ppm), Na (6388-20746 ppm), K (73.225-211.875ppm), Ca (306.25-537.5 ppm), Mg (675-2475ppm), Cl (6160-18350 ppm), SO4 (1680-4080 ppm), HCO3 (93.75-225 ppm), SAR (37.61-107.95). The analytical results for the surface samples presented the impact of both solodization and salinization processes. They are shown from the high values of EC and domination of Na in the exchangeable complex. The ions occur in the following concentration order: Na > Mg > Ca > K and Cl > SO4 > HCO3.
This study examined the distribution and dominance of some heavy metals in samples of dust fallout from Shaibah area in the province of Basra/ Iraq. The fallen dust collected by special containers of metal (diameter of 15 cm and height of 30 cm) via bags of polyethylene monthly between June 2011 and November 2012. An acid mixture of nitric and Perchloric acids (1:1) was used to digest the samples, then heavy metals (Ni, Cd, Pb, Fe Zn and Cr) analysed by using a Flame Atomic Absorption Spectrophotometer. The program SPSS was used to analyse data statistically using model 19. The mean of Cd concentration was a range from 0.0002 during May in St7 and 0.0158 mg/m3 September and St8. The result showed that the concentration of Cr ranges from 0.0046 to 0.4598 mg/m3. Ni conc. showed significant differences (0.871-0.0012 mg/m3), Pb range from 0.008 to 1.9042 mg/m3. Contamination of Cd, Pb and Cr might accumulate from different areas along with local pollution because of the high occurrence in whole locations, whereas Ni seems polluted locally because of high rates only at St2. The heavy metals above the reference value become seriously polluted according to WOH2008 and ATSDR, (2002), but below the target value in other studies.
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