Determination of Pollution Caused by Heavy Metals Cu, Zn, Ni and Pb in the Persian Gulf Coastal Sediments

Subject Areas : environmental management

Akbar Elsagh ^{1 *} , Mohammad Barmaki ²

1 - Member of the Chemistry Board, Faculty of Chemistry- Islamic Azad University- Tehran Branch-Tehran- Iran
2 - Member of the Chemistry Board, Faculty of Chemistry- Islamic Azad University- North Tehran Branch-Tehran- Iran

Received: 2010-10-02 Accepted : 2011-01-30 Published : 2014-02-20

Keywords: Heavy Metals, Persian Gulf, Bandar Abbas, coastal sediments,

Abstract :

Background and Objective : In recent years, many industries activities such as refining crude oil,aluminum and zinc production, ship repair and construction, loading and unloading minerals andchemicals, as a development center in Bandar Abbas of southern Iran, has exacerbated the pollutionand destruction of sensitive ecosystems of coastal region water. Therefore, determination of traceelements, making the harmful effects on marine ecosystems including aquatic and consequent effects,puts man’s life in sediments of coastal waters and which is important. Based on this researchmeasurement of the amount of heavy metals Ni, Zn, Cu and Pb in coastal sediments is the target ofBandar Abbas area.Materials and Methods: All stages of sample digestion and sedimentation according to standardmethods (MOOPAM) were performed. The amount of heavy metals Ni, Zn, Cu and Pb in coastalsediments by atomic absorption spectroscopy (AAS) was measured.Results : On this basis, the average concentration of heavy metals copper, zinc, nickel and lead insediments, respectively 35.2 ± 0.2, 89.1 ± 0.3, 27.9 ± 0.3 and 149.6 ± 0.1 (μg g-1) dry weight sediment,has been calculated. These values mean concentrations of elements in the sediments are above theglobal and domestic and foreign regions standard.Conclusion: Statistical analysis (ANOVA: Single Factor) showed that concentrations of heavy metalscopper, zinc, nickel and lead in sediment are significant differences between the crossings. Twoelements lead and nickel with a coefficient of correlation 0.8368 have the highest range thenrespectively the elements lead and zinc with a coefficient of correlation 0.5270, nickel and copper witha coefficient of correlation 0.1722, nickel and zinc with a coefficient depends on 0.1704 and copperand zinc with correlation coefficient of 0.0890 are placed at the next step. The correlation coefficientbetween positive and significant lead and nickel, lead and zinc, nickel and copper, nickel and zincfinally determined that the source of pollution in the sediments of these elements is the same.Coefficient of negative correlation between different elements showed that the resource of thesediment for these heavy metals is the same.

References:

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