Environmental evaluation on heavy metals in coastal sediments of the Bandar-e- Imam and Deylam, North Persian Gulf, Iran
Subject Areas :Ghodratollah rostamipaydar 1 , hooman moradpour 2
1 - استادیارگروه زمین شناسی دانشگاه آزاد اسلامی واحد اهواز، اهواز، ایران
2 - Graduate Student of Remote Sensing and Geographical Information Systems Faculty of Planning and Geography of Tabriz University
Keywords: Heavy metals, Bandar-e-Imam, Deylam, Coastal sediments, Geo-environmental index,
Abstract :
Evaluation of heavy metals is essential to monitoring of soil pollution, maintain the quality of the environment and human health. The aims of these study to assess concentrations of heavy metals in Bandar-e-Imam and Deylam coastal sediments. The data collected during 2015, in 20 stations, 43 samples were collected from coastal sediments and heavy metals were analyzed by ICP-MS and atomic absorption. Then, statistical parameters and important geoenvironmental index such as geoaccumulation index(Igeo), Enrichment factor (EF), contamination factor(Cf), degree of contamination(Cd), Pollution load index(Pli) and ecological risk index(Er) was calculated and for the best distributoin we used inverse distance weighting interpolation (IDW) and radial basis function (RBF) with five sub-branch of the local polynomial method (LP) and global (GP). Based on the results of chemical analysis the average of the chromium, mercury, arsenic, lead and cadmium is 54.27, 0.07, 5.49, 10.13 and 0.25 mg/kg respectively. As following the concentration of heavy metals is compared with similar studies in the world. The study area has a heavy manufacturing industries and harbor position, so heavy metal pollution showed a dominant performance of anthropogenic activities and in comparison, risk of contamination in the Bandar-e- Imam is higher than the Deylam shoreline.
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