Methods

By using the geo- accumulation (I-geo), contamination factor (CF) ,and Pollution load index (PLI) as first attempt to evaluate the heavy metals pollution in the sediments of Iraqi coastlines.

Sampling

1-geo- accumulation (I- geo)

The index of Geo accumulation (I-geo) means the assessment of contamination by comparing the levels of heavy metal obtained to a background level originally used with bottom sediments (Muller, 1969)

2-contamination factor (CF)

Contamination factor (CF) was determined following equation according to Thomilson et al (1980). The level of contamination by metals was established by applying the CF that can be calculated as follows: CF= Cm Sample/ Cm Background .The contamination factor (CF) for Fe, Co, Zn, Cu, Ni, and Pb was calculated in the study areas, and the results are present in Table

3-pollution load index (PLI)

The PLI provides a simple but comparative means for assessing a site quality. Pollution load index (PLI) was determined following equation according to Thomilson et al (1980), where (PLI) is expressed as follows: PLI = n√CF1 x CF2 x CF3 x …..x CFn Where: n= the number of studied metals in each site

4-Extraction of oil

5-Measurement of oil contents in sediments by Fluorescence method-

6-- Background test (blank)

Sampling

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Methods