Determination of pollution caused by heavy metals Zn, Cr, Ni and Cd in the Persian Gulf coastal sediments
Subject Areas :
1 - مربی گروه شیمی دانشگاه آزاد اسلامی واحد تهران شمال
Keywords: Heavy metals, Bandar Abbas, Persian Gulf, coastal sediment,
Abstract :
In recent years, many industries activities such as refining crude oil, aluminum and zincproduction, ship repair and construction, loading and unloading of minerals and chemicals, etc. Asa development center in Bandar Abbas, southern Iran, which formed the subject exacerbatepollution load destruction of sensitive ecosystems coastal waters region. Therefore, measures toidentify and measure heavy metals and trace elements with regard to harmful effects on marineecosystems including aquatic and consequently affects puts man in sediments of coastal waters isan important. Based on this in this study the amount of heavy metals Zn, Cr, Ni and Cd insediments in coastal areas target Bandar Abbas apparatus flame atomic absorption spectroscopy(AAS) was measured. All stages of sample and digestion of sediment according to standardmethods (MOOPAM) were. Thus, the average concentration of heavy metals Zn, Cr, Ni and Cd insediments, respectively 89.1 ± 0.3, 90.4 ± 0.3, 27.9 ± 0.3 and 2.1 ± 0.2 (µg g-1) dry weightsediment, respectively. This value with an average concentration of elements in sediments aboveand other global internal and external areas were analyzed and compared. Statistical analysis(ANOVA: Single Factor) showed that the average concentration of heavy metals Zn, Cr, Ni andCd in sediment are significant differences between the crossings. Two elements Cd and Zn with acorrelation coefficient of 0.7651 have the highest correlation and then the order of elements Ni andCr with the coefficient correlation 0.7410, Cd and Cr with the coefficient correlation 0.599, Zn andCr coefficient correlation 0.5603 and Ni and Zn with the coefficient correlation 0.1704 are. Withcoefficient significant and positive correlation between Cd and Zn, Cd and Cr, Zn and Cr andfinally be determined that the source of pollution in the sediments of these elements is the same.The results show there are no statistically significant correlations for Cd, Ni coefficient.