Shreadah Mohamed A, Shobier Aida H, Ghani Safaa A Abdel, El Zokm Gehan M, Said Tarek O
National Institute of Oceanography and Fisheries, Alexandria, Egypt,
Environ Monit Assess. 2015 May;187(5):280. doi: 10.1007/s10661-015-4420-y. Epub 2015 Apr 22.
The major constituents and trace metals in the surface sediments collected from the Western Harbor and El-Mex Bay along the Egyptian Mediterranean Coast were studied. The concentrations of major constituents decreased in the following order: Ca > Si > Mg > Na > K for the Western Harbor and El-Mex Bay. Additionally, the ranking order of trace metals was Fe > Al > Pb > Zn > Mn > Cu > Sn > V > As > Cd > Se for the Western Harbor. For El-Mex Bay, the decreasing order was Fe > Al > Mn > Sn > Pb > Zn > Cu > V > As > Cd > Se. Fe, Al, Zn, Pb, Cu, V, Cd and Sn in the Western Harbor occurred in higher concentrations than in El-Mex Bay. A higher concentration of Mn was observed in El-Mex Bay. Two pollution indicators, enrichment factor (EF) and metal pollution index (MPI), and several sediment quality guidelines (SQGs) were used to evaluate the status of metal pollution. Based on the mean EF values of the studied metals, surface sediments of the Western Harbor and El-Mex Bay revealed that they are enriched with metals from anthropogenic sources. An analysis of variance (ANOVA) test showed that the mean measurements for all metals across the Western Harbor and El-Mex Bay are significantly different at a 0.05 significance level. Principal components analysis (PCA) was applied in result interpretation. The spatial distribution of the different parameters was illustrated.
对从埃及地中海沿岸的西港和埃尔-梅克斯湾采集的表层沉积物中的主要成分和痕量金属进行了研究。西港和埃尔-梅克斯湾主要成分的浓度按以下顺序降低：钙＞硅＞镁＞钠＞钾。此外，西港痕量金属的排序为：铁＞铝＞铅＞锌＞锰＞铜＞锡＞钒＞砷＞镉＞硒。对于埃尔-梅克斯湾，递减顺序为：铁＞铝＞锰＞锡＞铅＞锌＞铜＞钒＞砷＞镉＞硒。西港中的铁、铝、锌、铅、铜、钒、镉和锡的浓度高于埃尔-梅克斯湾。在埃尔-梅克斯湾观察到较高浓度的锰。使用两种污染指标，即富集因子（EF）和金属污染指数（MPI），以及若干沉积物质量准则（SQG）来评估金属污染状况。根据所研究金属的平均EF值，西港和埃尔-梅克斯湾的表层沉积物表明它们富含来自人为源的金属。方差分析（ANOVA）测试表明，西港和埃尔-梅克斯湾所有金属的平均测量值在0.05的显著性水平上存在显著差异。主成分分析（PCA）用于结果解释。说明了不同参数的空间分布。
