Lamiaa Mohamedein | National Institute of Oceanography and Fisheries (original) (raw)

Papers by Lamiaa Mohamedein

Research paper thumbnail of Concentration of Hydrocarbon in Water and Sediment in Suez Bay, Egypt

Polycyclic Aromatic Hydrocarbons (PAHs) were analyzed in water and sediment collected from some h... more Polycyclic Aromatic Hydrocarbons (PAHs) were analyzed in water and sediment collected from some hot spots suffered from discharges of PAHs from many sources in Suez city like refineries, petroleum dock. PAHs were analyzed in water and sediment samples collected from six stations in Suez Bay during winter and summer 2019 by gas chromatography. In water total PAHs concentration ranged from 70.21 ng/L to 316.50 ng/L in winter and from 193.98 ng/L to 3210.0 ng/L in summer season while sediment samples ranged between 73.064 ng/g 3532 ng/g and from 77.97 ng/g to 12887.84 ng/g in winter and summer, respectively.

Research paper thumbnail of Impact of total phenolic compounds on ecological and health risks of water and sediments from Timsah Lake, Suez Canal, Egypt

Environmental science and pollution research international, Jul 6, 2024

This study aimed to measure spatial and temporal distributions of total phenolic compounds and th... more This study aimed to measure spatial and temporal distributions of total phenolic compounds and their ecological and health hazards using UV-vis spectrophotometers as a low-cost, fast, simple method in water and sediments collected from Timsah Lake, Suez Canal, Egypt, 2022. Also, assessing highly adaptive fungal species associated with contamination is designed. Due to human and environmental activities and industrial waste discharges, Timsah Lake is increasingly threatened by all kinds of pollutants. The results indicated that the seasonal concentration means of the phenolic compounds were winter (0.229) > spring (0.161) > summer (0.124) > autumn (0.131) mg/l and winter (3.08) > summer (2.66) mg/g in water and sediment samples, respectively. The result has shown that the phenol concentrations in all stations were more than 0.005 and 0.1 mg/l for Egyptian National Standards and World Health Organization (WHO) for drinking water but less than the limits of 1 mg/l for wastewater. Notably, the fungi recorded the highest counts during spring, totaling 397 colonies/100 ml of water and 842 colonies/gram of sediment. Four isolates of fungi were identified and deposited in the GenBank database by Aspergillus terreus, Aspergillus terreus, Penicillium roqueforti, and Penicillium rubens under accession numbers OR401933, OR402837, OR402878, and OR424729, respectively. Moreover, ecological risk (RQ) for the total phenolic compounds was > 1 in all investigated stations for water and sediments. The hazard quotient is HQ < 1 in all seasons in water and sediments except winter. The hazard index (HI) in water and sediments for children is higher than for adults. It can be concluded that the low-cost, fast, simple method for determining phenolic content in water and sediment samples, using UV-vis spectrophotometry, was useful for predicting the reactivates of a wide variety of phenol and their derivatives. Furthermore, it can be concluded that Periodic assessments of water quality and strict regulations are necessary to safeguard this vital resource from pollution and ensure the well-being of future generations. Finally, policymakers and water treatment specialists might use the information from this research to reduce these chemical pollutants in Egypt.

Research paper thumbnail of Spatial Variation and Ecological Risk Assessment of Heavy Metal in the Surficial Sediments Along the Egyptian Red Sea Coast

The concentrations of certain heavy metals (Fe, Mn, Zn, Cr, Ni, Pb, Cu, and Cd) of sandy sediment... more The concentrations of certain heavy metals (Fe, Mn, Zn, Cr, Ni, Pb, Cu, and Cd) of sandy sediment samples collected from eight sites along the Egyptian Red Sea coast were investigated in order to evaluate the pollution status and ecological risk assessment of the study area. The results of the partitioning study showed that the average concentrations of the heavy metals analyzed in investigated sediment exhibited the following decreasing order Fe > Mn > Zn > Cr > Ni > Pb > Cu > Cd. The degree of surface sediment contamination was computed using Metal Pollution Index (MPI) and Geoaccumulation index (I geo). Metal Pollution Index showed that station 5 (Qusier Middle) suffered with metal pollutions. Association with adverse effects to marine organisms was determined using the classification of the sediments according to SQGs. Sediment quality guidelines based on the consensus approach revealed that Pb and Cu had no adverse ecological effects.

Research paper thumbnail of Heavy Metal Contamination and Environmental Risk in Surface Sediments along the Coasts of Suez and Aqaba Gulfs, Egypt

Research paper thumbnail of Evaluation of some leachable heavy metals in the Seafloor sediments of the two navigation Harbours El Zaitiya and Adabiya, Gulf of Suez, Egypt

Egyptian Journal of Aquatic Biology and Fisheries, 2018

Research paper thumbnail of Geochemical associations, risk assessment, and source identification of selected metals in sediments from the Suez Gulf, Egypt

Human and Ecological Risk Assessment: An International Journal, 2018

ABSTRACT Sequential extraction procedure has been carried out to scrutinize the geochemical assoc... more ABSTRACT Sequential extraction procedure has been carried out to scrutinize the geochemical association of Cadmium (Cd), Copper (Cu), Iron (Fe), Lead (Pb), and Manganese (Mn) with the main sedimentary phases (exchangeable, carbonate, Fe-Mn oxides, organic, and residual fraction) at 10 marine sediment samples collected from the Suez Gulf. Global contamination factor was used to identify the pollution hotspots, which indicated the existence of intensive metal contamination at stations close to the northern part of the Gulf, especially for Cd, Cu, and Pb. The potential ecological risk indices: Potential ecological risk index, risk assessment code, and modified risk assessment code revealed that there are potential hazards to marine biota caused by Cd, Cu, and Pb due to the increased levels of these metals in the labile fractions, which are vulnerable to changes in environmental conditions. This work is a good basis for further studies about metal fractionation in the Suez Gulf. It is also very helpful for government decisions about the development of the Gulf.

Research paper thumbnail of Assessment the Leachable Heavy Metals and Ecological Risk in the Surface Sediments inside the Red Sea Ports of Egypt

International Journal of Marine Science, 2017

Research paper thumbnail of Seasonal Variations of Phytoplankton and Nutrients in the Egyptian Harbors of the Northern Red Sea

International Journal of Marine Science, 1970

Surface water and phytoplankton samples were seasonally collected from different 18 stations cove... more Surface water and phytoplankton samples were seasonally collected from different 18 stations covering about nine harbors along the Northern Red Sea during 2014-2015. The phytoplankton community was represented by 146 species belonging to 57 genera. These species are classified as 86 species of diatoms, 39 dinoflagellates, 15 cyanophytes, three of euglenophytes, two species of chlorophytes and one of silicoflagellates. The diatoms were the leading and most dominated group, forming about 81 % of the total phytoplankton abundance. The highest occurrence of phytoplankton was observed at the stations and harbors near the northern part of the Suez Gulf (Suez Bay), due to the partial treated sewage discharged from ABB Company, and low fractions of petroleum hydrocarbons derived from some petroleum companies. Whereas, other harbors located in the Gulf of Aqaba and eastern coast of Suez Gulf were the lowest productive sites. The highest abundance of phytoplankton during winter, 2015 was associated with highest values of dissolved oxygen (3.35-10.39 mgO 2 /l) and dissolved nitrate (0.170 -1.262 µmole/l). The species diversity of phytoplankton (annual average of 2.47 nats) showed its minimum during spring at Adabiya inside harbor, which may reflect a relative high pollution state at this area. The stepwise multiple regression analysis revealed that mainly dissolved nitrate followed by water temperature and pH values were the most effective variables that controlled the seasonal fluctuations of phytoplankton at the different sites of the study area during 2014-2015. However, the existence of some toxic phytoplankton species in the present study suggests careful consumption of fisheries resources at the different harbors of the study area and frequent monitoring for Harmful Algal Blooms (HABs) is required.

Research paper thumbnail of Physiochemical analysis and speciation of heavy metals in wastewater and sediment samples from the Suez province in Egypt

The concentrations of dissolved and particulate forms of Cu, Zn, Pb, Cd, Cr, Ni, Co, Fe and Hg ha... more The concentrations of dissolved and particulate forms of Cu, Zn, Pb, Cd, Cr, Ni, Co, Fe and Hg have been determined in wastewater of some factories, fertilizer plants, Attaqa power station, Suez oil processing and El-Nasr petroleum companies and a slaughter house. The concentrations of dissolved metals ranged between 8.02 to 98.90, 31.32 to 1024.50, 14.45 to 289.05, 1.87 to 36.40, 7.78 to 29.98, 3.07 to 45.20, 9.51 to 21.88, 104.91 to 478.63 μg/L and 2.66 to 7.52 ng/L for Cu, Zn, Pb, Cd, Cr, Ni, Co, Fe and Hg, respectively the particulate phases concentrations were high and ranged between 12.16 to 150.41, 389.41 to 1165.90, 14.86 to 254.75, 2.19 to 6.73, 3.36 to 36.29, 3.75 to 169.82, 12.68 to 29.15, 314.22 to 1335.50 μg/L and 1.12 to 16.76 ng/L for Cu, Zn, Pb, Cd, Cr, Ni, Co, Fe and Hg, respectively. The concentrations of heavy metals in the bottom sediments ranged from 22.30 to 86.70, 894.60 to 986.20, 18.90 to 41.20, 3.20 to 9.60, 17.30 to 28.50, 10.30 to 17.40, 14.50 to 27.20, 1...

Research paper thumbnail of Distribution and ecological risk evaluation of bioavailable phosphorus in sediments of El Temsah Lake, Suez Canal

Research paper thumbnail of Removal of cadmium from aqueous solution using marine green algae, Ulva lactuca

The Egyptian Journal of Aquatic Research, 2014

Research paper thumbnail of Med-Hg&Sn

Research paper thumbnail of Biological Characteristics in Approaching to Biochemical and Heavy Metals of Edible Fish Terapon puta, Cuvier, 1829 from Different Fishing Sites along the Suez Canal, Egypt

Journal of Fisheries and Aquatic Science, 2016

Research paper thumbnail of Resident wild birds as bio-indicator for some heavy metals pollution in Lake Manzala

Research paper thumbnail of Levels of Some Heavy Metals in Coastal Water, Sediment and the Limpet Patella sp. from the Northern Part of the Suez Gulf (Suez Bay)

Research paper thumbnail of The semi-annual variations of the bio-available heavy metals and natural radionuclides in Timsah Lake sediments, Egypt

International Journal of Scientific and Engineering Research

Research paper thumbnail of Spatial Variation and Environmental Risk Assessment of Heavy Metal in the Surficial Sediments along the Egyptian Red Sea Coast

Catrina : The International Journal of Environmental Sciences, 2015

Research paper thumbnail of Mercury and tin contents in water and sediments along the Mediterranean shoreline of Egypt

The Egyptian Journal of Aquatic Research, 2013

Research paper thumbnail of Removal of Cadmium from aquaeous solution using marine green algae, Ulva lactuca

Research paper thumbnail of Physiochemical analysis and speciation of heavy metals in waste water and sediment samples from the Suez province in Egypt

The concentrations of dissolved and particulate forms of Cu, Zn, Pb, Cd, Cr, Ni, Co, Fe and Hg ha... more The concentrations of dissolved and particulate forms of Cu, Zn, Pb, Cd, Cr, Ni, Co, Fe and Hg have been determined in wastewater of some factories, fertilizer plants, Attaqa power station, Suez oil processing and El-Nasr petroleum companies and a slaughter house. The concentrations of dissolved metals ranged between 8.02 to 98.90, 31.32 to 1024.50, 14.45 to 289.05, 1.87 to 36.40, 7.78 to 29.98, 3.07 to 45.20, 9.51 to 21.88, 104.91 to 478.63 µg/L and 2.66 to 7.52 ng/L for Cu, Zn, Pb, Cd, Cr, Ni, Co, Fe and Hg, respectively the particulate phases concentrations were high and ranged between 12.16 to 150.41, 389.41 to 1165.90, 14.86 to 254.75, 2.19 to 6.73, 3.36 to 36.29, 3.75 to 169.82, 12.68 to 29.15, 314.22 to 1335.50 µg/L and 1.12 to 16.76 ng/L for Cu, Zn, Pb, Cd, Cr, Ni, Co, Fe and Hg, respectively. The concentrations of heavy metals in the bottom sediments ranged from 22.30 to 86.70, 894.60 to 986.20, 18.90 to 41.20, 3.20 to 9.60, 17.30 to 28.50, 10.30 to 17.40, 14.50 to 27.20, 1750.20 to 2102.40 and 0.092 to 0.166 µg/g (dry weight) for Cu, Zn, Pb, Cd, Cr, Ni, Co, Fe and Hg, respectively. The results indicate exchange and transport of heavy metals between the wastewater particulates and bottom sediments

Research paper thumbnail of Concentration of Hydrocarbon in Water and Sediment in Suez Bay, Egypt

Polycyclic Aromatic Hydrocarbons (PAHs) were analyzed in water and sediment collected from some h... more Polycyclic Aromatic Hydrocarbons (PAHs) were analyzed in water and sediment collected from some hot spots suffered from discharges of PAHs from many sources in Suez city like refineries, petroleum dock. PAHs were analyzed in water and sediment samples collected from six stations in Suez Bay during winter and summer 2019 by gas chromatography. In water total PAHs concentration ranged from 70.21 ng/L to 316.50 ng/L in winter and from 193.98 ng/L to 3210.0 ng/L in summer season while sediment samples ranged between 73.064 ng/g 3532 ng/g and from 77.97 ng/g to 12887.84 ng/g in winter and summer, respectively.

Research paper thumbnail of Impact of total phenolic compounds on ecological and health risks of water and sediments from Timsah Lake, Suez Canal, Egypt

Environmental science and pollution research international, Jul 6, 2024

This study aimed to measure spatial and temporal distributions of total phenolic compounds and th... more This study aimed to measure spatial and temporal distributions of total phenolic compounds and their ecological and health hazards using UV-vis spectrophotometers as a low-cost, fast, simple method in water and sediments collected from Timsah Lake, Suez Canal, Egypt, 2022. Also, assessing highly adaptive fungal species associated with contamination is designed. Due to human and environmental activities and industrial waste discharges, Timsah Lake is increasingly threatened by all kinds of pollutants. The results indicated that the seasonal concentration means of the phenolic compounds were winter (0.229) > spring (0.161) > summer (0.124) > autumn (0.131) mg/l and winter (3.08) > summer (2.66) mg/g in water and sediment samples, respectively. The result has shown that the phenol concentrations in all stations were more than 0.005 and 0.1 mg/l for Egyptian National Standards and World Health Organization (WHO) for drinking water but less than the limits of 1 mg/l for wastewater. Notably, the fungi recorded the highest counts during spring, totaling 397 colonies/100 ml of water and 842 colonies/gram of sediment. Four isolates of fungi were identified and deposited in the GenBank database by Aspergillus terreus, Aspergillus terreus, Penicillium roqueforti, and Penicillium rubens under accession numbers OR401933, OR402837, OR402878, and OR424729, respectively. Moreover, ecological risk (RQ) for the total phenolic compounds was > 1 in all investigated stations for water and sediments. The hazard quotient is HQ < 1 in all seasons in water and sediments except winter. The hazard index (HI) in water and sediments for children is higher than for adults. It can be concluded that the low-cost, fast, simple method for determining phenolic content in water and sediment samples, using UV-vis spectrophotometry, was useful for predicting the reactivates of a wide variety of phenol and their derivatives. Furthermore, it can be concluded that Periodic assessments of water quality and strict regulations are necessary to safeguard this vital resource from pollution and ensure the well-being of future generations. Finally, policymakers and water treatment specialists might use the information from this research to reduce these chemical pollutants in Egypt.

Research paper thumbnail of Spatial Variation and Ecological Risk Assessment of Heavy Metal in the Surficial Sediments Along the Egyptian Red Sea Coast

The concentrations of certain heavy metals (Fe, Mn, Zn, Cr, Ni, Pb, Cu, and Cd) of sandy sediment... more The concentrations of certain heavy metals (Fe, Mn, Zn, Cr, Ni, Pb, Cu, and Cd) of sandy sediment samples collected from eight sites along the Egyptian Red Sea coast were investigated in order to evaluate the pollution status and ecological risk assessment of the study area. The results of the partitioning study showed that the average concentrations of the heavy metals analyzed in investigated sediment exhibited the following decreasing order Fe > Mn > Zn > Cr > Ni > Pb > Cu > Cd. The degree of surface sediment contamination was computed using Metal Pollution Index (MPI) and Geoaccumulation index (I geo). Metal Pollution Index showed that station 5 (Qusier Middle) suffered with metal pollutions. Association with adverse effects to marine organisms was determined using the classification of the sediments according to SQGs. Sediment quality guidelines based on the consensus approach revealed that Pb and Cu had no adverse ecological effects.

Research paper thumbnail of Heavy Metal Contamination and Environmental Risk in Surface Sediments along the Coasts of Suez and Aqaba Gulfs, Egypt

Research paper thumbnail of Evaluation of some leachable heavy metals in the Seafloor sediments of the two navigation Harbours El Zaitiya and Adabiya, Gulf of Suez, Egypt

Egyptian Journal of Aquatic Biology and Fisheries, 2018

Research paper thumbnail of Geochemical associations, risk assessment, and source identification of selected metals in sediments from the Suez Gulf, Egypt

Human and Ecological Risk Assessment: An International Journal, 2018

ABSTRACT Sequential extraction procedure has been carried out to scrutinize the geochemical assoc... more ABSTRACT Sequential extraction procedure has been carried out to scrutinize the geochemical association of Cadmium (Cd), Copper (Cu), Iron (Fe), Lead (Pb), and Manganese (Mn) with the main sedimentary phases (exchangeable, carbonate, Fe-Mn oxides, organic, and residual fraction) at 10 marine sediment samples collected from the Suez Gulf. Global contamination factor was used to identify the pollution hotspots, which indicated the existence of intensive metal contamination at stations close to the northern part of the Gulf, especially for Cd, Cu, and Pb. The potential ecological risk indices: Potential ecological risk index, risk assessment code, and modified risk assessment code revealed that there are potential hazards to marine biota caused by Cd, Cu, and Pb due to the increased levels of these metals in the labile fractions, which are vulnerable to changes in environmental conditions. This work is a good basis for further studies about metal fractionation in the Suez Gulf. It is also very helpful for government decisions about the development of the Gulf.

Research paper thumbnail of Assessment the Leachable Heavy Metals and Ecological Risk in the Surface Sediments inside the Red Sea Ports of Egypt

International Journal of Marine Science, 2017

Research paper thumbnail of Seasonal Variations of Phytoplankton and Nutrients in the Egyptian Harbors of the Northern Red Sea

International Journal of Marine Science, 1970

Surface water and phytoplankton samples were seasonally collected from different 18 stations cove... more Surface water and phytoplankton samples were seasonally collected from different 18 stations covering about nine harbors along the Northern Red Sea during 2014-2015. The phytoplankton community was represented by 146 species belonging to 57 genera. These species are classified as 86 species of diatoms, 39 dinoflagellates, 15 cyanophytes, three of euglenophytes, two species of chlorophytes and one of silicoflagellates. The diatoms were the leading and most dominated group, forming about 81 % of the total phytoplankton abundance. The highest occurrence of phytoplankton was observed at the stations and harbors near the northern part of the Suez Gulf (Suez Bay), due to the partial treated sewage discharged from ABB Company, and low fractions of petroleum hydrocarbons derived from some petroleum companies. Whereas, other harbors located in the Gulf of Aqaba and eastern coast of Suez Gulf were the lowest productive sites. The highest abundance of phytoplankton during winter, 2015 was associated with highest values of dissolved oxygen (3.35-10.39 mgO 2 /l) and dissolved nitrate (0.170 -1.262 µmole/l). The species diversity of phytoplankton (annual average of 2.47 nats) showed its minimum during spring at Adabiya inside harbor, which may reflect a relative high pollution state at this area. The stepwise multiple regression analysis revealed that mainly dissolved nitrate followed by water temperature and pH values were the most effective variables that controlled the seasonal fluctuations of phytoplankton at the different sites of the study area during 2014-2015. However, the existence of some toxic phytoplankton species in the present study suggests careful consumption of fisheries resources at the different harbors of the study area and frequent monitoring for Harmful Algal Blooms (HABs) is required.

Research paper thumbnail of Physiochemical analysis and speciation of heavy metals in wastewater and sediment samples from the Suez province in Egypt

The concentrations of dissolved and particulate forms of Cu, Zn, Pb, Cd, Cr, Ni, Co, Fe and Hg ha... more The concentrations of dissolved and particulate forms of Cu, Zn, Pb, Cd, Cr, Ni, Co, Fe and Hg have been determined in wastewater of some factories, fertilizer plants, Attaqa power station, Suez oil processing and El-Nasr petroleum companies and a slaughter house. The concentrations of dissolved metals ranged between 8.02 to 98.90, 31.32 to 1024.50, 14.45 to 289.05, 1.87 to 36.40, 7.78 to 29.98, 3.07 to 45.20, 9.51 to 21.88, 104.91 to 478.63 μg/L and 2.66 to 7.52 ng/L for Cu, Zn, Pb, Cd, Cr, Ni, Co, Fe and Hg, respectively the particulate phases concentrations were high and ranged between 12.16 to 150.41, 389.41 to 1165.90, 14.86 to 254.75, 2.19 to 6.73, 3.36 to 36.29, 3.75 to 169.82, 12.68 to 29.15, 314.22 to 1335.50 μg/L and 1.12 to 16.76 ng/L for Cu, Zn, Pb, Cd, Cr, Ni, Co, Fe and Hg, respectively. The concentrations of heavy metals in the bottom sediments ranged from 22.30 to 86.70, 894.60 to 986.20, 18.90 to 41.20, 3.20 to 9.60, 17.30 to 28.50, 10.30 to 17.40, 14.50 to 27.20, 1...

Research paper thumbnail of Distribution and ecological risk evaluation of bioavailable phosphorus in sediments of El Temsah Lake, Suez Canal

Research paper thumbnail of Removal of cadmium from aqueous solution using marine green algae, Ulva lactuca

The Egyptian Journal of Aquatic Research, 2014

Research paper thumbnail of Med-Hg&Sn

Research paper thumbnail of Biological Characteristics in Approaching to Biochemical and Heavy Metals of Edible Fish Terapon puta, Cuvier, 1829 from Different Fishing Sites along the Suez Canal, Egypt

Journal of Fisheries and Aquatic Science, 2016

Research paper thumbnail of Resident wild birds as bio-indicator for some heavy metals pollution in Lake Manzala

Research paper thumbnail of Levels of Some Heavy Metals in Coastal Water, Sediment and the Limpet Patella sp. from the Northern Part of the Suez Gulf (Suez Bay)

Research paper thumbnail of The semi-annual variations of the bio-available heavy metals and natural radionuclides in Timsah Lake sediments, Egypt

International Journal of Scientific and Engineering Research

Research paper thumbnail of Spatial Variation and Environmental Risk Assessment of Heavy Metal in the Surficial Sediments along the Egyptian Red Sea Coast

Catrina : The International Journal of Environmental Sciences, 2015

Research paper thumbnail of Mercury and tin contents in water and sediments along the Mediterranean shoreline of Egypt

The Egyptian Journal of Aquatic Research, 2013

Research paper thumbnail of Removal of Cadmium from aquaeous solution using marine green algae, Ulva lactuca

Research paper thumbnail of Physiochemical analysis and speciation of heavy metals in waste water and sediment samples from the Suez province in Egypt

The concentrations of dissolved and particulate forms of Cu, Zn, Pb, Cd, Cr, Ni, Co, Fe and Hg ha... more The concentrations of dissolved and particulate forms of Cu, Zn, Pb, Cd, Cr, Ni, Co, Fe and Hg have been determined in wastewater of some factories, fertilizer plants, Attaqa power station, Suez oil processing and El-Nasr petroleum companies and a slaughter house. The concentrations of dissolved metals ranged between 8.02 to 98.90, 31.32 to 1024.50, 14.45 to 289.05, 1.87 to 36.40, 7.78 to 29.98, 3.07 to 45.20, 9.51 to 21.88, 104.91 to 478.63 µg/L and 2.66 to 7.52 ng/L for Cu, Zn, Pb, Cd, Cr, Ni, Co, Fe and Hg, respectively the particulate phases concentrations were high and ranged between 12.16 to 150.41, 389.41 to 1165.90, 14.86 to 254.75, 2.19 to 6.73, 3.36 to 36.29, 3.75 to 169.82, 12.68 to 29.15, 314.22 to 1335.50 µg/L and 1.12 to 16.76 ng/L for Cu, Zn, Pb, Cd, Cr, Ni, Co, Fe and Hg, respectively. The concentrations of heavy metals in the bottom sediments ranged from 22.30 to 86.70, 894.60 to 986.20, 18.90 to 41.20, 3.20 to 9.60, 17.30 to 28.50, 10.30 to 17.40, 14.50 to 27.20, 1750.20 to 2102.40 and 0.092 to 0.166 µg/g (dry weight) for Cu, Zn, Pb, Cd, Cr, Ni, Co, Fe and Hg, respectively. The results indicate exchange and transport of heavy metals between the wastewater particulates and bottom sediments