Health Risk Assessment of Some Heavy Metals in Water and Sediment at Marsa-Matrouh, Mediterranean Sea, Egypt

Abstract

In an attempt to evaluate the environmental quality of Marsa-Matrouh city which covered the most famous beaches in Egypt, an environmental risk assessment was performed, including a screening level ecological risk assessment. The aim of this work was to determine which metals could possibly pose toxic adverse ecological effects to marine organisms and to determine whether hot spots exist or not. To fulfill the goals of study, surfacial sediment and water samples were collected from ten different locations covering MarsaMatrouh city during four seasons (2010)(2011). The average concentrations of Cd, Cu, Fe, Ni, Pb and Zn were 2. 381 ± 3.389, 9.307 ± 14.159, 68.969 ± 9.397, 2.642 ± 1.004, 16.712 ± 8.469, 31.168 ± 15.322 μg/l in water and 0.755 ± 0.240, 5.363 ± 1.581, 962.131 ± 975.084, 3.972 ± 2.180, 15.210 ± 4.434 and 24.608 ± 7.706 μg/g dry weight in sediment respectively. The concentrations of the investigated six metals in water were within the acceptable limits except for two stations (Cleopatra and El-Obayed) which exhibited higher values than the permissible level of Cd during autumn 2010. Metal pollution assessment for both water and sediment was studied. Heavy metal pollution index indicates that water is not critically polluted with respect to the investigated metals. For sediment samples, threshold effect concentrations (TEC HQ) were lower than 1 except for Cd which showed higher value than 1, indicating the possibility of occurrence of toxic adverse ecological effects to benthic organisms for Cd, while rare adverse ecological effects are expected to occur with respect to Cu, Ni, Pb and Zn.

Human Health Risk Assessment of Trace Metals in Water, Sediments and Edible Fish Species Collected from Idu-Uruan Beach, Akwa Ibom State, Nigeria

“…Copper concentrations in this study was higher than those reported by [36] in both dry (0.36 mg/L) and wet (0.07 mg/L) season collected from Ogbere River, Ibadan. However, the Cu value (9.307 mg/L) reported by [37] in Marsa Matrouh, Mediterranean, Egypt River was close to the value obtained in this study.…”

An Innovative Approach to Assess the Ecotoxicological Risks of Soil Exposed to Solid Waste

“…The PI L value provides a comparative means for assessing a site's quality, where a value of PI L < 1 indicates no contamination with the studied metals; when PI L = 1, the baseline levels of pollutants are present; whereas a value of PI L > 1 indicates that, on average, the element concentrations are above the permissible levels, and a deterioration of the site quality is registered, as shown in Table 5 [24,25]. The geo-accumulation index (I geo ) of a sample site was calculated according to the relation shown in the Equation (3) [20,21,26,27]:…”

Condición ambiental del sedimento del sector oriental del golfo de Cariaco

“…Empero, las variaciones ambientales pueden provocar la liberación de estas sustancias acumulativas y tóxicas adheridas a las partículas del sedimento hacia el agua, donde son más disponibles química y biológicamente (Fuentes, 2010). En específico, cuando estas especies químicas cautivas están presentes en cantidades superiores a una concentración umbral pueden causar efectos tóxicos adversos a los organismos vivos e impactar indirectamente la salud humana, por ello cualquier contaminante que ingrese al medio marino afecta, de forma potencial, la ecología (Khaled et al 2017;Fuentes, 2010).…”