M.N. Rashed

Publications

• 1.40

  Impact points

  The role of trace elements on hepatitis virus infections: a review.

  Mohamed Nageeb Rashed

  Journal of trace elements in medicine and biology : organ of the Society for Minerals and Trace Elements (GMS). 07/2011; 25(3):181-7.

  The significance of the nutritional roles of trace metals (includes some heavy metals) is widely recognized, since these elements are as constituent components of many metal proteins and metalloenzymes serum trace metals levels, and their ratios are frequently reported to be good marker for diagnosi... [more] The significance of the nutritional roles of trace metals (includes some heavy metals) is widely recognized, since these elements are as constituent components of many metal proteins and metalloenzymes serum trace metals levels, and their ratios are frequently reported to be good marker for diagnosing various diseases. Trace metals play an important role in liver disease particularly liver degeneration. Influence of trace elements has been studied in a large number of viruses belonging to different groups. This review reported the role of some trace elements iron (Fe), copper (Cu), cobalt (Co), manganese (Mn) and zinc (Zn) as well as toxic elements Pb on hepatitis virus infections.

• Monitoring of contaminated toxic and heavy metals, from mine tailings through age accumulation, in soil and some wild plants at Southeast Egypt

  M.N.Rashed

  Journal of Hazardous Materials. 01/2010; 178:739–746.

  This study includes tailing from gold mine, at Allaqi Wadi Aswan, Egypt, used by incident Egyptian and after by some English companies. Tailings, soils and wild plants (Acia Raddiena and Aerva Javanica) were sampled and analysed for toxic metals (Hg, Cd, Pb and As) and associated heavy metals (Cr, A... [more] This study includes tailing from gold mine, at Allaqi Wadi Aswan, Egypt, used by incident Egyptian and after by some English companies. Tailings, soils and wild plants (Acia Raddiena and Aerva Javanica) were sampled and analysed for toxic metals (Hg, Cd, Pb and As) and associated heavy metals (Cr, Ag, Ni, Au, Mo, Zn, Mn and Cu) using ICP–MS, ICP–AES, CVAAS and FAAS techniques. The present work concerns the distribution and mobility of these metals from tailing to the surrounding soils and wild flora. The results reveal that Cr, Cu, Zn, Ni, Ag, Au, Mn, Hg, As, Ag, Au and Pb in soil decreased as faraway from the tailing, after then irregular trends as a result of input from surrounding rocks. Acia Raddiena plant accumulated As, Cd and Pb in higher levels than Aerva Javanica. Quantification of soil and plant pollution was studied using enrichment factors, contamination factor, pollution index and bioaccumulation factors and show good interpretations of the results. The overall results of this study show that the soil and plants near the gold mine tailing were highly toxic, and the plants and soil must not be uses for grazing or agriculture.

• Cost Effective Adsorbed Materials For Industrial Wastewater Treatment

  M.Nageeb RASHED

  01/2009: pages 73-102;

• Total and Extractable Heavy Metals in Indoor,Outdoor and Street Dust from Aswan City, Egypt

  Mohamed Nageeb Rashed

  Clean-SOIL, AIR, WATER. 01/2008; 36:850-857.

  The level of heavy metal contamination in indoor room dust is evaluated and its relationship to the external environment examined. Samples of outdoor fallen dust, indoor room dust and street dust were collected from two different environmental locations in Aswan city, Egypt. Total and extractable (s... [more] The level of heavy metal contamination in indoor room dust is evaluated and its relationship to the external environment examined. Samples of outdoor fallen dust, indoor room dust and street dust were collected from two different environmental locations in Aswan city, Egypt. Total and extractable (soluble) concentrations of cadmium, lead, iron, and manganese were determined in the three types of dust samples. The measurements of the metal contents were preformed using atomic absorption spectroscopy. The aims of this study are: (a) to assess the influence of urban traffic on the heavy metal content in house and street dust, and (b) to determine and compare the soluble fractions of the metals in indoor house dust, outdoor fallen dust and street dust. The results showed widespread heavy metal contamination, especially Pb, Mn, and Fe, which were present as the highest values in the outdoor fallen dust, indoor and street dust, while Cd was the lowest content metal present. In general, indoor and outdoor concentration ratios varied widely from one metal to another and from one residence to another. An enrichment factor for metal explained the originality of these metals. Traffic near the two studied buildings reflects the presence of Pb in outdoor fallen dust, indoor room dust and street dust in those residences. Soluble fractions of the studied heavy metals seem to be at the lower values compared to total metal concentration present.
• 1.36

  Impact points

  Animal hair as biological indicator for heavy metal pollution in urban and rural areas.

  M Nageeb Rashed, M E Soltan

  Environmental monitoring and assessment. 12/2005; 110(1-3):41-53.

  Animal hair is a good biomonitoring tool for heavy metals assessment and reflects the content of heavy metals in the forage and soil. Heavy metals Fe, Mn, Co and Ni as well as toxic metals Cd and Pb were determined in goat, sheep and camel hair, forage and soil collected from four different environm... [more] Animal hair is a good biomonitoring tool for heavy metals assessment and reflects the content of heavy metals in the forage and soil. Heavy metals Fe, Mn, Co and Ni as well as toxic metals Cd and Pb were determined in goat, sheep and camel hair, forage and soil collected from four different environmental urban and rural regions. These regions are Aswan city farms, Allaqi desert pasture, Kalabsha farms and Halaiub desert pasture at far south of Egypt. The results reveal that sheep hair contains the highest levels of Fe and Mn (879 and 55 microg/g, respectively), camel hair contains the highest Pb, whereas for goat Cd and Ni were the highest. Heavy metal concentrations in the studied hair reflect the presence of these metals in the surrounding forage and soil and vary from one area to another, and give knowledge of pollution in the area. Correlation statistics analysis and cluster analysis show a good and significant value between metals in hair and plants.
• 4.79

  Impact points

  Monitoring of environmental heavy metals in fish from Nasser Lake.

  M N Rashed

  Environment international. 08/2001; 27(1):27-33.

  Lake ecosystems are, in particular, vulnerable to heavy metal pollution. Tilapia nilotica is one of the aquatic organisms affected by heavy metals. Therefore, heavy metals Co, Cr, Cu, Fe, Mn, Ni, Sr and Zn were determined in different tissues of T. nilotica (ages 1, 1.5, 2, 2.5 and 3 years), which i... [more] Lake ecosystems are, in particular, vulnerable to heavy metal pollution. Tilapia nilotica is one of the aquatic organisms affected by heavy metals. Therefore, heavy metals Co, Cr, Cu, Fe, Mn, Ni, Sr and Zn were determined in different tissues of T. nilotica (ages 1, 1.5, 2, 2.5 and 3 years), which include the muscle, gill, stomach, intestine, liver, vertebral column and scales, to assess the fish pollution with heavy metals. In addition, the study was extended to determine these elements in the aquatic plant (Najas armeta), sediment and water of Khor E1-Ramel in Nasser Lake (Egypt). The study showed that of all the fish parts, fish liver accumulated the highest levels of Cu and Zn. Manganese presented in the intestine and stomach in the highest concentration. Scales exhibited the highest levels of Co, Cr, Ni and Sr, while the gill and vertebral column contains the lowest level of the studied elements. Heavy metals in different parts of T. nilotica differ with the fish growth and extraction rate of these elements from sediment, aquatic plant and lake water. Heavy metals under study in the edible parts of the investigated fish were in the safety permissible levels for human uses.
• 1.36

  Impact points

  Cadmium and lead levels in fish (Tilapia nilotica) tissues as biological indicator for lake water pollution.

  M N Rashed

  Environmental monitoring and assessment. 05/2001; 68(1):75-89.

  Cadmium and lead were determined in different tissues (muscle, gill, stomach, intestine. liver, vertebral column and scales) of Tilapia nilotica from the High Dam Lake, Aswan (Egypt) to assess the lake water pollution with those toxic metals. Fish samples were chosen from different ages and weights ... [more] Cadmium and lead were determined in different tissues (muscle, gill, stomach, intestine. liver, vertebral column and scales) of Tilapia nilotica from the High Dam Lake, Aswan (Egypt) to assess the lake water pollution with those toxic metals. Fish samples were chosen from different ages and weights to be analyzed along with samples of the aquatic plant (Najas armeta), sediment and lake water. The results showed that cadmium and lead concentrations were higher in fish scales and vertebral column than in the other parts of the fish. Cadmium and lead levels in High Dam lake water and fish (Tilapia nilotica) were a result of the pollution which uptakes from aquatic plants, sediments and gasoline containing lead that leaks from fishery boats. Tilapia nilotica fish was used as a good bio-assay indicator for the lake pollution with cadmium and lead. The fish muscles in this study were in the safety baseline levels for man consumption.