Elsayed MOHAMED ALI NAFEA - Academia.edu (original) (raw)

Papers by Elsayed MOHAMED ALI NAFEA

CLEAN – Soil, Air, Water, 2013

Heavy metal contamination of soil and water caused by industrialization has become a major enviro... more Heavy metal contamination of soil and water caused by industrialization has become a major environmental issue in Pakistan. Therefore, it is important to determine the level of contamination of soil and water close to industrial areas. In the current study, we have assessed the heavy metal contamination of soil and groundwater at the leather industrial area of Kasur, Pakistan. Soil and groundwater samples were collected from the study area and analyzed for Cr, Fe, Ni, Cd, Pb, Zn, Co, and Mn by atomic absorption spectrophotometric method. The data revealed that soil and groundwater in the study area are highly contaminated with all tested heavy metals. In particular, chromium concentrations varied from 1970 to 2980 mg kg−1 and 0.82 to 2.25 mg L−1 in soil and groundwater, respectively. Correlation analysis has identified that the heavy metals in the groundwater and soil of the study area having a common source/origin, believed to be the leather industry of Kasur.

Environmental Management, 2019

To obtain a general understanding of heavy metal contamination in peri-urban agricultural soils i... more To obtain a general understanding of heavy metal contamination in peri-urban agricultural soils in China, this study investigates the concentrations of eight heavy metals, i.e., Cd, Pb, Zn, As, Cu, Cr, Hg, and Ni, in the peri-urban agricultural soils of 31 provincial capital cities in China. The data were obtained via exhaustive literature searches in both the Web of Science and China National Knowledge Infrastructure (CNKI) as well as from statistical yearbooks published in China. To evaluate the pollution status of each city and identify a variety of potential sources, various contamination indexes, e.g., the enrichment factor (EF), geoaccumulation index (I geo), and integrated pollution index (IPI), were calculated based on the peri-urban agricultural soil dataset. The results of the analysis of the heavy metal concentrations, EF values and I geo values showed that the peri-urban agricultural soils were enriched in most heavy metals, and Cd and Hg concentrations greatly exceeded the Chinese Environmental Protection Administration (CEPA) guidelines. The IPI results showed that 15 of the 31 cities, i.e., 48%, exhibited varying extents of heavy metal pollution. Although the mean IPI value for peri-urban agricultural soils in all cities (0.83) was slightly lower than that for urban soil (0.9), the IPI values for peri-urban agricultural soils from 65% of the cities were greater than those for urban soils, indicating that peri-urban agricultural soils are more polluted than urban soils in these large cities. These results are important for guiding future research on heavy metal pollution in peri-urban agricultural soils of presently expanding Chinese cities. Keywords Peri-urban agricultural soils • Provincial capital cities • Background values • Heavy metal concentrations • Contamination index

Journal of King Abdulaziz University-Marine Sciences, 2008

For a better management of water resources, the municipality of Jeddah uses recycled municipal wa... more For a better management of water resources, the municipality of Jeddah uses recycled municipal wastewater for the irrigation of parks and green areas. These places are recreational areas and are frequently visited by the population. A comprehensive study was planned to measure the potential health risk that may result from inadequate water treatment through the examination of the chemical and bacteriological characteristics of the recycled wastewater as well as the soil. In this context, 20 water and soil samples were collected from the most frequently visited sites all over the city. Water samples were analyzed for their content of, between others, nitrogen species (ammonium, nitrite, nitrate, organic nitrogen) phosphorus, dissolved oxygen, dissolved organic carbon, pH and suspended particulate matter. The trace elements Cu, Pb and Cd were also measured In order to achieve the major objective, we looked for the regulations regarding the quality criteria for this particular type of application. In the absence of particular guidelines for the irrigation of parks and green areas with recycled water, the reference criteria applied for unrestricted irrigation were used. Concentrations of TSS, Ammonium, nitrate, total nitrogen and phosphate averaged 65.25, 20.8, 3.4, 24.5 and 6.3 mg l-l , while concentrations of the trace elements Cd, Pb and Cu averaged 0.0003, 0.0044 and 0.009 mg l-1. These results indicate that the concentrations of the analyzed parameters are within the limits fixed for the water reuse for irrigation. The health risk may come from the potential contamination with other chemicals and any eventual bacterial contamination particularly with faecal coliform.

Journal of King Abdulaziz University-Marine Sciences, 1994

Trace metals, Fe, Mn, Zn, Cu, Ni, Cr, Cd and Hg were measured in ten species of macro algae from ... more Trace metals, Fe, Mn, Zn, Cu, Ni, Cr, Cd and Hg were measured in ten species of macro algae from the Qatari coastal water. Concentrations in the various species indicate a nonpolluted environment, however, high iron and cadmium concentrations were observed in some species. Variations of the metal concentrations in the different species are apparently related to the specific accumulation capacity of each particular species, however, intraspecies variations may be appreciable. Iron was by far the dominant metal in all the species examined and it seems that it may influence the accumulation of the other metals. High concentration factors were observed by Zn, Cd, Cu and Hg emphasizing the role that macroalgae may play in the biogeochemical cycling of trace metals in the marine environment.

Egyptian Journal of Botany, 2017

HIS STUDY aims to investigate the nutritive values of some wild plants in the coastal Deltaic Med... more HIS STUDY aims to investigate the nutritive values of some wild plants in the coastal Deltaic Mediterranean wetlands of Egypt for sustainable uses and management; these are : Arthrocnemum macrostachyum (Moric) Koch , Atriplex portulacoides L., Bassia indica (Weight) A. J. Scott, Chenopodium album L., Halocnemum strobilaceum (Pall.) M. Bieb (Chenopodiaceae) , Amaranthus hybridus L (Amaranthaceae), Portulaca oleracea L.(Portulacaceae), Bolboschoenus glaucus L.(Cyperaceae) , Sesbania sesban L. (Fabaceae) and Pluchea dioscoroides (L.) DC. (Asteraceae) as their over growth and domination cause many serious environmental problems, So it is urgent to suggest the possible economic uses of these plants as a tool in sustainable management. The mean values of the physicochemical characteristics of soil samples collected underneath the studied species were carried out to be considered during cultivation of these plants. The determination of lipid, crude protein, total phosphorus , total carbohydrates, crude fiber, ash content and dry weight, as well as Na + , K + and Ca + cations in the dry mater showed noteable variation among the studied species. The highest mean carbohydrates content was recorded in P. oleracea and A. hybridus with values of 211.3 and 291 mg/g dry wt. , respectively. The relatively high contents of carbohydrates, lipids and proteins in some selected plant species qualify them as suitable candidates to be used as animal feed stalk and natural organic fertilizers with safe manner. The high contents of Na + , K + and Ca + ions in the studied plants make them also as a good source of mineral salts in food formulas, and as a tool for desalinization in the salt affected lands in the coastal Egyptian wetland habitats.

Journal of King Abdulaziz University-Marine Sciences, 2002

Journal of King Abdulaziz University-Marine Sciences, 2002

The coastal area south of Jeddah, Saudi Arabia, eastern Red Sea, receives daily more than 100,000... more The coastal area south of Jeddah, Saudi Arabia, eastern Red Sea, receives daily more than 100,000 m 3 of domestic sewage. The solid material of the dumped wastes was analyzed for its organic carbon, Al, Fe, Mn, Cu, Zn and Cr contents and their mass emission was calculated. To trace the impact on the coastal area, the same elements were analyzed in sediments and suspended matter in the receiving basin and along a coastal strip extending for about 10 km southward the discharge point. It was found that the impact of the effluent was limited to the area in the proximity of the effluent discharge point where concentrations in both sediments and suspended matter were several times higher than in the other parts of the area. Away from the effluent, concentrations were comparable to those measured in uncontaminated carbonate sediments. In the dilution basin, the distribution of the elements correlated with the dilution pattern of the effluent water. Normalization to aluminium revealed however, that only Fe, Cu and Zn were enriched in the sediments (EF 1.7, 6.3 and 6.8 respectively), while Mn and Cr were depleted. This behaviour was attributed to the difference in the oxidation-reduction kinetics of the redox sensitive elements (Fe, Mn, Cr) and to interaction with the organic matter and formation of insoluble sulphides (Cu and Zn). In the suspended matter all the elements showed a positive deviation from linearity at intermediate salinity. The excess was accounted for by the resuspension of bottom sediments (Fe, Cu and Zn) and adsorption of mobilized elements (Mn).

Journal of King Abdulaziz University-Marine Sciences, 1994

Assiut University Bulletin for Environmental Researches, Oct 1, 2019

African Journal of Environmental Science and Technology, Jan 30, 2015

ITC, Faculty of Geo-Information Science and Earth …, 2006

Your article is protected by copyright and all rights are held exclusively by Saudi Society for G... more Your article is protected by copyright and all rights are held exclusively by Saudi Society for Geosciences. This e-offprint is for personal use only and shall not be self-archived in electronic repositories. If you wish to selfarchive your work, please use the accepted author's version for posting to your own website or your institution's repository. You may further deposit the accepted author's version on a funder's repository at a funder's request, provided it is not made publicly available until 12 months after publication.

CLEAN – Soil, Air, Water, 2013

Heavy metal contamination of soil and water caused by industrialization has become a major enviro... more Heavy metal contamination of soil and water caused by industrialization has become a major environmental issue in Pakistan. Therefore, it is important to determine the level of contamination of soil and water close to industrial areas. In the current study, we have assessed the heavy metal contamination of soil and groundwater at the leather industrial area of Kasur, Pakistan. Soil and groundwater samples were collected from the study area and analyzed for Cr, Fe, Ni, Cd, Pb, Zn, Co, and Mn by atomic absorption spectrophotometric method. The data revealed that soil and groundwater in the study area are highly contaminated with all tested heavy metals. In particular, chromium concentrations varied from 1970 to 2980 mg kg−1 and 0.82 to 2.25 mg L−1 in soil and groundwater, respectively. Correlation analysis has identified that the heavy metals in the groundwater and soil of the study area having a common source/origin, believed to be the leather industry of Kasur.

Environmental Management, 2019

To obtain a general understanding of heavy metal contamination in peri-urban agricultural soils i... more To obtain a general understanding of heavy metal contamination in peri-urban agricultural soils in China, this study investigates the concentrations of eight heavy metals, i.e., Cd, Pb, Zn, As, Cu, Cr, Hg, and Ni, in the peri-urban agricultural soils of 31 provincial capital cities in China. The data were obtained via exhaustive literature searches in both the Web of Science and China National Knowledge Infrastructure (CNKI) as well as from statistical yearbooks published in China. To evaluate the pollution status of each city and identify a variety of potential sources, various contamination indexes, e.g., the enrichment factor (EF), geoaccumulation index (I geo), and integrated pollution index (IPI), were calculated based on the peri-urban agricultural soil dataset. The results of the analysis of the heavy metal concentrations, EF values and I geo values showed that the peri-urban agricultural soils were enriched in most heavy metals, and Cd and Hg concentrations greatly exceeded the Chinese Environmental Protection Administration (CEPA) guidelines. The IPI results showed that 15 of the 31 cities, i.e., 48%, exhibited varying extents of heavy metal pollution. Although the mean IPI value for peri-urban agricultural soils in all cities (0.83) was slightly lower than that for urban soil (0.9), the IPI values for peri-urban agricultural soils from 65% of the cities were greater than those for urban soils, indicating that peri-urban agricultural soils are more polluted than urban soils in these large cities. These results are important for guiding future research on heavy metal pollution in peri-urban agricultural soils of presently expanding Chinese cities. Keywords Peri-urban agricultural soils • Provincial capital cities • Background values • Heavy metal concentrations • Contamination index

Journal of King Abdulaziz University-Marine Sciences, 2008

For a better management of water resources, the municipality of Jeddah uses recycled municipal wa... more For a better management of water resources, the municipality of Jeddah uses recycled municipal wastewater for the irrigation of parks and green areas. These places are recreational areas and are frequently visited by the population. A comprehensive study was planned to measure the potential health risk that may result from inadequate water treatment through the examination of the chemical and bacteriological characteristics of the recycled wastewater as well as the soil. In this context, 20 water and soil samples were collected from the most frequently visited sites all over the city. Water samples were analyzed for their content of, between others, nitrogen species (ammonium, nitrite, nitrate, organic nitrogen) phosphorus, dissolved oxygen, dissolved organic carbon, pH and suspended particulate matter. The trace elements Cu, Pb and Cd were also measured In order to achieve the major objective, we looked for the regulations regarding the quality criteria for this particular type of application. In the absence of particular guidelines for the irrigation of parks and green areas with recycled water, the reference criteria applied for unrestricted irrigation were used. Concentrations of TSS, Ammonium, nitrate, total nitrogen and phosphate averaged 65.25, 20.8, 3.4, 24.5 and 6.3 mg l-l , while concentrations of the trace elements Cd, Pb and Cu averaged 0.0003, 0.0044 and 0.009 mg l-1. These results indicate that the concentrations of the analyzed parameters are within the limits fixed for the water reuse for irrigation. The health risk may come from the potential contamination with other chemicals and any eventual bacterial contamination particularly with faecal coliform.

Journal of King Abdulaziz University-Marine Sciences, 1994

Trace metals, Fe, Mn, Zn, Cu, Ni, Cr, Cd and Hg were measured in ten species of macro algae from ... more Trace metals, Fe, Mn, Zn, Cu, Ni, Cr, Cd and Hg were measured in ten species of macro algae from the Qatari coastal water. Concentrations in the various species indicate a nonpolluted environment, however, high iron and cadmium concentrations were observed in some species. Variations of the metal concentrations in the different species are apparently related to the specific accumulation capacity of each particular species, however, intraspecies variations may be appreciable. Iron was by far the dominant metal in all the species examined and it seems that it may influence the accumulation of the other metals. High concentration factors were observed by Zn, Cd, Cu and Hg emphasizing the role that macroalgae may play in the biogeochemical cycling of trace metals in the marine environment.

Egyptian Journal of Botany, 2017

HIS STUDY aims to investigate the nutritive values of some wild plants in the coastal Deltaic Med... more HIS STUDY aims to investigate the nutritive values of some wild plants in the coastal Deltaic Mediterranean wetlands of Egypt for sustainable uses and management; these are : Arthrocnemum macrostachyum (Moric) Koch , Atriplex portulacoides L., Bassia indica (Weight) A. J. Scott, Chenopodium album L., Halocnemum strobilaceum (Pall.) M. Bieb (Chenopodiaceae) , Amaranthus hybridus L (Amaranthaceae), Portulaca oleracea L.(Portulacaceae), Bolboschoenus glaucus L.(Cyperaceae) , Sesbania sesban L. (Fabaceae) and Pluchea dioscoroides (L.) DC. (Asteraceae) as their over growth and domination cause many serious environmental problems, So it is urgent to suggest the possible economic uses of these plants as a tool in sustainable management. The mean values of the physicochemical characteristics of soil samples collected underneath the studied species were carried out to be considered during cultivation of these plants. The determination of lipid, crude protein, total phosphorus , total carbohydrates, crude fiber, ash content and dry weight, as well as Na + , K + and Ca + cations in the dry mater showed noteable variation among the studied species. The highest mean carbohydrates content was recorded in P. oleracea and A. hybridus with values of 211.3 and 291 mg/g dry wt. , respectively. The relatively high contents of carbohydrates, lipids and proteins in some selected plant species qualify them as suitable candidates to be used as animal feed stalk and natural organic fertilizers with safe manner. The high contents of Na + , K + and Ca + ions in the studied plants make them also as a good source of mineral salts in food formulas, and as a tool for desalinization in the salt affected lands in the coastal Egyptian wetland habitats.

Journal of King Abdulaziz University-Marine Sciences, 2002

Journal of King Abdulaziz University-Marine Sciences, 2002

The coastal area south of Jeddah, Saudi Arabia, eastern Red Sea, receives daily more than 100,000... more The coastal area south of Jeddah, Saudi Arabia, eastern Red Sea, receives daily more than 100,000 m 3 of domestic sewage. The solid material of the dumped wastes was analyzed for its organic carbon, Al, Fe, Mn, Cu, Zn and Cr contents and their mass emission was calculated. To trace the impact on the coastal area, the same elements were analyzed in sediments and suspended matter in the receiving basin and along a coastal strip extending for about 10 km southward the discharge point. It was found that the impact of the effluent was limited to the area in the proximity of the effluent discharge point where concentrations in both sediments and suspended matter were several times higher than in the other parts of the area. Away from the effluent, concentrations were comparable to those measured in uncontaminated carbonate sediments. In the dilution basin, the distribution of the elements correlated with the dilution pattern of the effluent water. Normalization to aluminium revealed however, that only Fe, Cu and Zn were enriched in the sediments (EF 1.7, 6.3 and 6.8 respectively), while Mn and Cr were depleted. This behaviour was attributed to the difference in the oxidation-reduction kinetics of the redox sensitive elements (Fe, Mn, Cr) and to interaction with the organic matter and formation of insoluble sulphides (Cu and Zn). In the suspended matter all the elements showed a positive deviation from linearity at intermediate salinity. The excess was accounted for by the resuspension of bottom sediments (Fe, Cu and Zn) and adsorption of mobilized elements (Mn).

Journal of King Abdulaziz University-Marine Sciences, 1994

Assiut University Bulletin for Environmental Researches, Oct 1, 2019

African Journal of Environmental Science and Technology, Jan 30, 2015

ITC, Faculty of Geo-Information Science and Earth …, 2006

Your article is protected by copyright and all rights are held exclusively by Saudi Society for G... more Your article is protected by copyright and all rights are held exclusively by Saudi Society for Geosciences. This e-offprint is for personal use only and shall not be self-archived in electronic repositories. If you wish to selfarchive your work, please use the accepted author's version for posting to your own website or your institution's repository. You may further deposit the accepted author's version on a funder's repository at a funder's request, provided it is not made publicly available until 12 months after publication.