A Mathematical Models to Assessment Pollution of Water and Sediments of Auda Marsh

Bashar J. J. Al-Sabah, Hashim H. Kareem Aldhahi


A study was carried out to investigate the quality of water and sediments of Auda marsh, Amara, southern Iraq. Used some mathematical models for assessment water and sediments quality. Values of  Sodium Adsorption Ratio (SAR) ranged between 2.63 to 7.31 meq.l-1. It was observed that all sites were good for irrigation (SAR˂10). The mean concentration of metals (Fe, Pb, Zn and Cu) ranged between 1365-3735, 6.00-7.70, 4.50-10.50 and 4.15-8.15 mg.kg-1 respectively. Values of Enrichment Factor (EF) varied from 12.5 to 38.0, considered to be contaminated with that particular elements (EF>5). Values of Contamination Factor (CF) ranged from 0.037 to 0.385, this mean low contamination factor and low degree of contamination at all sites (Cd˂ 7). The calculated CFs were found to fall in the following sequence Pb>Cu>Fe>Zn. Values of Pollution Load Index (PLI) and Metal Pollution Index (MPI) were ranged between 0.095 to 0.145 and 583.21 to 1333.09 respectively. The lower values of PLI indicated that it is lied between perfection and only baseline levels of pollutant present (PLI=0-1), while MPI values indicated that it is a considerable contamination (MPI>2). Values of Geoaccumulation Index (Igeo) varied from -3.42 to -1.44, these indicated that unpolluted situation for all stations (Igeo˂0). Metal enrichment index (SEF) values varied from 0.029 to 0.385 this indicated unpolluted stations (SEF˂1).

Keywords: pollution, Auda marsh, contamination indices, water & sediment quality.

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ISSN (Paper)2224-3216 ISSN (Online)2225-0948

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