The Al-Najaf sea is a natural groundwater depending depression reservoir. The increase in uncontrolled dumping of solid waste in nearby areas and the use of sewage and animal manure as agricultural enhancing agents raise the fear of threatening the natural life in this lake by increasing metal concentrations in sediments. Forty-eight samples of sediments were collected, and the concentrations of eight metals (Fe, Zn, Cr, Mn, Co, Pb, Cd, and Ni) were measured in each sample. Five pollution indices (contamination factor, degree of contamination, pollution load index, enrichment factor and geo - accumulation index) were calculated. Spatial distributions with the pollution indices were studied to detect the specific metals that may contaminate the sediments and their probable source from the pattern of their distribution. The study revealed that, for most metals, concentrations at the lake shore were higher than those in the interior of the lake. Moreover, all the pollution indices were higher than the critical value on shores and slightly less than the critical level inside the lake, which means that the use of spatial distribution of metals in combination with pollution indices are beneficial in the detection of metal polluted sediments and their possible sources from their transmission patterns.

Al-Najaf海是依赖于洼地的天然地下水。附近地区无控制的固体废物倾倒的增加以及污水和动物粪便作为农业促进剂的使用增加了人们担心通过增加沉积物中金属的浓度来威胁该湖的自然生命。收集了48个沉积物样品，并测量了每个样品中8种金属（铁，锌，铬，锰，钴，铅，镉和镍）的浓度。计算了五个污染指数（污染因子，污染程度，污染负荷指数，富集因子和地积累指数）。研究了具有污染指数的空间分布，以从其分布方式中检测出可能污染沉积物的特定金属及其可能的来源。研究表明，对于大多数金属，湖岸的浓度高于湖内部的浓度。此外，所有污染指数都高于海岸的临界值，但略低于湖泊内部的临界水平，这意味着结合污染指数使用金属的空间分布有利于检测金属污染的沉积物和污染物。从它们的传播方式中得出它们的可能来源。