Aida Didaran; Gholam Hoseyn Vosoughi; Ali Mashinchian Moradi
Volume 6, Issue 1 , January 2022, , Pages 1-7
Abstract
Tiger Cuttlefish-Sepia pharaonis – Herenberg 1831-is a is a seafood species that belongs to five fishing stations in the Bahrakan Bay ( the waters of the Persian Gulf). 3specimens of Cuttlefish-Sepia pharaonis –, regardless of being male or female specimens, have been caught.The amount of ...
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Tiger Cuttlefish-Sepia pharaonis – Herenberg 1831-is a is a seafood species that belongs to five fishing stations in the Bahrakan Bay ( the waters of the Persian Gulf). 3specimens of Cuttlefish-Sepia pharaonis –, regardless of being male or female specimens, have been caught.The amount of these heavy metals by using atomic absorption spectrophotometer (AAS) was determined.The Range of concentrations of the heavy metals on the basis of dry weight, respectively is: The Concentrations of Cd, Cu, Pb in the samples of Cuttlefish -Sepia pharaonis- 0.54 to 0.25,3.98 to 2.12and from 0.09-0.03 (mg / kg)were measured. The level of contamination by heavy metals in Cuttlefish -Sepia pharaonis- of the Bahrakan Bay-Persian Gulf Shows that the amount of heavy metals in the species of Cuttlefish -Sepia pharaonis- that is studied on ,according to the standard of US FDA ,is within the limits permitted for human consumption and The results reveal that the concentration of the metals can be compared in this way: Cu>Pb> Cd. As a result of this study, acorrelation between climatic parameters (5 different locations of Cuttlefish -Sepia pharaonis-live in the Bahrakan Bay) and accumulation of heavy metals were found in the Cuttlefish -Sepia pharaonis-.To select the location of Cuttlefish-Sepia pharaonis – fishing as you go from the province of Khuzestan to Bushehr , the contamination by heavy metals: lead, copper, cadmium, in this fish will behigher.
a bazzi
Volume 4, Issue 1 , February 2014, , Pages 47-56
Abstract
Levels of the heavy metals Copper (Cu), Zinc (Zn), Lead (Pb), Cadmium (Cd), Chromium (Cr), Nickel (Ni), Iron (Fe) and Manganese (Mn) were determined by graphite furnace atomic absorption spectrophotometer (Model 67OG) in coastal water, sediments and soft tissues of the Saccostrea cucullata, from the ...
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Levels of the heavy metals Copper (Cu), Zinc (Zn), Lead (Pb), Cadmium (Cd), Chromium (Cr), Nickel (Ni), Iron (Fe) and Manganese (Mn) were determined by graphite furnace atomic absorption spectrophotometer (Model 67OG) in coastal water, sediments and soft tissues of the Saccostrea cucullata, from the intertidal zone at five stations in the Gulf of Chabahar on the Iranian coasts along the Oman Sea.The concentrations of heavy metals in water ranged between 3.37–5.74, 18.01–22.62, 4.24–4.52, 0.15–0.19, 20.16–21.46, 16.42–17.14, 15.43–24.76 μg L-1and 7.06–8.67 μg L-1 for Cu, Zn, Pb, Cd, Cr, Ni, Mn and Fe, respectively. The corresponding concentration values in the sediments were 46.79–54.76, 40.14–43.12, 25.63–28.23, 0.53–0.63, 47.16–51.43, 26.45–28.68, 52.13–53.46 and 84.42–89.14 μg g-1for Cu, Zn, Pb, Cd, Cr, Ni, Fe and Mn, respectively. The highest accumulated metals were Zn, Cu and Mn in S. cucullata while the lowest one was Cd. The highest concentrations of all metals in water, sediments and Oyster were recorded at Tiss harbour eastern parts of the Gulf, while the lowest concentrations were recorded at Damagheh. Based on this research, land based activities; shipping activity and the sewage disposal from vesseles and residential area close to these harbors are the main source of metal pollution in the Gulf of Chabahar.
N. Moayyeri; K. Saeb; E. Biazar
Volume 3, Issue 1 , March 2013, , Pages 13-16
Abstract
Heavy metals are highly poisonous in the environment, even in small quantities, and endanger certain species and all live beings. Current methods of removing heavy metals from aqueous media include chemical sequestration, ion exchange, surface absorption, membrane processes, oxidation and revival procedures ...
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Heavy metals are highly poisonous in the environment, even in small quantities, and endanger certain species and all live beings. Current methods of removing heavy metals from aqueous media include chemical sequestration, ion exchange, surface absorption, membrane processes, oxidation and revival procedures which have high investment and exploitation costs. Hence, it is significantly necessary to develop new and economical methods for effective removal of these metals from water and sewage. The present paper aims to evaluate efficiency of microparticles in removing heavy metals from water. Results of application of hydroxy-apatite microparticles as absorbers of heavy metals show that the absorption percentage average of lead (84.72%) by hydroxy-apatite microparticles is greater than that of cadmium (49.89%), zinc (72.90%), iron (74.50%) and nickel (79.25%).
M. Kashefiolasl; H. Zargarlelahi
Volume 3, Issue 1 , March 2013, , Pages 25-32
Abstract
Pollution of marine waters is one of the important issues that has a irreparable effects. Also, in the organic oil pollutants, due to inappropriate effects on the environment and humans health and ability to create cancer, hydro carbons of polycyclic (PAHS) and heavy metals (Ni,Hg,V) have a particular ...
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Pollution of marine waters is one of the important issues that has a irreparable effects. Also, in the organic oil pollutants, due to inappropriate effects on the environment and humans health and ability to create cancer, hydro carbons of polycyclic (PAHS) and heavy metals (Ni,Hg,V) have a particular importance. According to the importance of study of the environ mental contaminants in the four operational regions Siri , Lavan ,Khark and heavy metals (Ni,V,Hg) in the water and sediments was performed in two stage that was for sampling from receptive environment pollution. The sampling was accomplished with VAN VEEN GRAB device. Results are showed that concentration of the oil pollutants and heavy metals generally are dropped in the water and increased in the sediments.
L. VahdatiRaad; H. Khara
Volume 2, Issue 4 , December 2012, , Pages 249-254
Abstract
Wetlands are often considered sinks for contaminants, and Aquatic plants have been shown to play important roles in wetland biogeochemistry through their active and passive circulation of elements. In this research, in order to evaluate the concentration level of heavy metals released by the urban, industrial ...
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Wetlands are often considered sinks for contaminants, and Aquatic plants have been shown to play important roles in wetland biogeochemistry through their active and passive circulation of elements. In this research, in order to evaluate the concentration level of heavy metals released by the urban, industrial and agricultural activities at the margin of the rivers flowing into Anzali lagoon, as well as finding lead and cadmium accumulated in two plant species quoted below, a sampling has been made on two kinds of aquatic plants in the lagoon at three randomized stations based on the density of the plant coverage. In this project two regional aquatic plant species asHyrocotyleranocloides, Ceratophyllumdemersumhave been investigated for absorption of lead and cadmium. Results show an average concentration of lead in Ceratophyllum being 53.11 ppm, for Hydrocotyle 77.8 ppm, and of cadmium in Ceratophyllum being 4.46 ppm and for Hydrocotyle 6.28 ppm. According to results, lead has been the most abundant between these two metals inside plant organs regardless the specie. The statistic test gives the results under the confidence level 95% proving the amount of the absorption being significant in the stem of Hydrocotyle plant rather than in the root or the leaf compared with other species.