List of Articles Heavy elements

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  1 - Study of environmental impacts and geo-medical of heavy elements by using remote sensing technology and geochemistry(A case study about Palang Dareh region and Dali deposits in central province)
  Raha Salehi alireza gharagozlu sara yousefifar
  10.22034/jest.2021.22633.3192
  Background and objective: High concentration of elements (particularly heavy elements) have been always associated with environmental problems in terms of threats for local animals and plants, making it necessary to determine the concentration of heavy elements when ass More

  Background and objective: High concentration of elements (particularly heavy elements) have been always associated with environmental problems in terms of threats for local animals and plants, making it necessary to determine the concentration of heavy elements when assessing environmental quality. Geogenically high concentration of heavy elements and their spread across protected zones tend to impose irreparable damages to regional environment. Method: In the present research, remote sensing studies based on ETM and ASTER data were undertaken to determine regional alterations and structures, and geochemical studies were performed to determine how and why environmentally heavy elements are spread across Palang-Darreh region and Dali deposit located in Markazi province, with the results finally compiled into an environmental interpretation. Approximately, a total of 471 samples were processed، of which 62 samples were taken from Palang-Darreh area. The samples taken from Palang-Darreh area were analyzed via ICP and ICP-OES methods. Findings: Once finished with processing and statistically analyzing the chemical data، elemental anomaly diagrams and maps were prepared and, finally, statistical populations were investigated with respect to the international criteria set by WHO (World Health Organization). Discussion and Conclusion: It was indicated that, high concentration of some elements across the area was of geogenic nature. Since this location is a protected area and Dali mine is situated here, so survey of medical geology studies and proper solutions were presented to lower human and environmental of locations. Manuscript profile
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  2 - District 21 of Tehran Municipality Soil Condition in Terms of Contamination with Some Heavy Metals
  Fataneh Valinejad Azadeh Arbabi Sabzevari Reza Borna
  10.30495/jest.2021.58981.5303
  Background and Objective: Increasing consumption of chemical compounds in industrial processes has led to the accumulation of pollutants, including heavy metals, which are very costly and difficult to absorb from the environment. The purpose of this applied research is More

  Background and Objective: Increasing consumption of chemical compounds in industrial processes has led to the accumulation of pollutants, including heavy metals, which are very costly and difficult to absorb from the environment. The purpose of this applied research is to investigate the level of cadmium, chromium and lead contamination in the soil of western Tehran using pollution, enrichment and land geoaccumulation indices and pollution factors.Material and Methodology:  In order to evaluate the concentration of heavy elements in the study area, sampling was done in all three areas of District 21 of Tehran Municipality and 10 samples from each area with three replications and a total of 90 samples were prepared in the spring of 2020 and the concentrations of cadmium, lead and chromium in Soltani acid extract was measured using an atomic absorption spectrometer. The present study is one of the descriptive-analytical researches and its data are of primary type which has been prepared by two methods of documentary and field studies.Findings: The accumulation of these elements has been created in the surface soil. The mean concentrations of the studied elements in zones two and three were higher than one. The topsoil of area three had higher amounts of lead, cadmium and chromium than the other two areas, but these values were not significantly different from area two. The average amounts of lead, chromium and cadmium for the region were 38.1, 9.1 and 1.6 mg/kg, respectively. The enrichment index in zones two and three was more than one, but the numerical value of this index was less than one in zones one. Geoaccumulation index values for lead element in all three areas showed non-contaminated to slightly contaminated class and for cadmium and chromium showed non-contaminated class. The numerical value of the contamination factor, except for cadmium and in zone one, in other cases is one and more than one, which indicates the high concentration of these elements compared to the background concentration in the study area.Discussion and Conclusion: As a result of industrial and traffic activities, the accumulation of excess amounts of man-made elements in the study area has been created. Manuscript profile
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  3 - Determination of lead, mercury and cadmium concentrations in different organs of Barbus grypus and Liza abu of Karoon River in 2011
  علی ghorbani ranjbary نازنین ghorbani ranjbary زهرا ghorbani ranjbary M.H Marhamatizadeh پریسا Cheraghi
     Accumulation of heavy metals in fish body causes the destruction of soft tissues and suppression of immune system. Moreover, consumption of contaminated fish causes several consequences in humans. This survey was conducted to determine the concentration of More

     Accumulation of heavy metals in fish body causes the destruction of soft tissues and suppression of immune system. Moreover, consumption of contaminated fish causes several consequences in humans. This survey was conducted to determine the concentration of lead, mercury and cadmium in muscle tissue, gill as well as liver of Barbus grypus and Liza abu. These two species are native fishes of Karoon River in Ahvaz area. A total number of 80 sample was obtained during the winter of 2010. After preparation and chemical digestion of fish samples, the amounts of heavy metals were determined by spectrophotometer method. According to the results, the overall lead concentration in different organs of the two species was more than mercury and cadmium concentrations. Furthermore, the accumulation of heavy elements in gills was estimated higher than the other organs. Although a significant difference (P<0.05) was observed in heavy metal concentrations between gills and liver samples in Barbus grypus, such difference in the case of Liza abu was not significant. It was concluded that the overall contamination level of heavy elements in Barbus grypus was significantly (P≤0.05) higher than Liza abu. Manuscript profile
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  4 - Investigating the concentration of heavy metals and soil pollution indicators in west of Tehran
  Fataneh Valinejad Tabrizi Azadeh Arbaby Reza Borna
  The expansion of urbanization and the development of cities along with the rapid increase in population, the development of industrial activities and the excessive consumption of fossil fuels have greatly increased pollution and have turned this issue into one of the en More

  The expansion of urbanization and the development of cities along with the rapid increase in population, the development of industrial activities and the excessive consumption of fossil fuels have greatly increased pollution and have turned this issue into one of the environmental issues in recent decades. Tehran metropolis is one of the cities with high air pollution, which can be deposited in the soil and observed in the long term. In this research, in order to evaluate the concentration of heavy elements from the soil of the three areas of the 21st district of Tehran municipality, 10 samples were prepared with three repetitions and a total of 90 samples. Sampling was performed from a depth of 0-20 cm with three replications. Degree of pollution, pollution load index, and ecological risk index were used to assess pollution. Comparison of the concentrations of heavy elements and the trend of their changes showed that the accumulation of these elements has been created in the soil surface. The mean concentrations of the studied elements in zones 2 and 3 were higher than zone 1 (P-value < 0.05). Based on the results, the concentration of the studied elements in regions of two and three were higher than area one (P-value <0.05). Also, the pollution index being higher than one, indicates a high concentration of heavy elements compared to the background concentration in the studied area. The results of this research showed that due to the increasing development of urban and industrial areas in west Tehran, the soil of this area is highly exposed to heavy elements. Therefore, it seems necessary to regularly monitoring the soil of the region in terms of heavy elements and to carefully check the origin of these elements. Manuscript profile
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  5 - Monitoring Heavy Elements Cadmium, Nickel and Vanadium in Aquatic Plants, Typha latifolia and Phragmites australis in Hooralazim Wetland from Khuzestan Province
  Nazanin Firozshahian Khoshnaz Payandeh sima sabz alipour
  In aquatic ecosystems, aquatic plants are good biochemical indicators for monitoring heavy metals because they are stagnant in water and can determine contamination levels. This research was conducted in 2018 to investigate heavy metals of cadmium, nickel and vanadium i More

  In aquatic ecosystems, aquatic plants are good biochemical indicators for monitoring heavy metals because they are stagnant in water and can determine contamination levels. This research was conducted in 2018 to investigate heavy metals of cadmium, nickel and vanadium in aquatic plants of straw (Phragmites australis) and Louisiana (Typha latifolia) of Horralzim wetland in Khuzestan province. Sampling was performed from three stations. In order to measure heavy elements was used to measure the induction plasma (ICP). The highest of cadmium in root of Phragmites australis was 1.486±0.020 mg Kg-1 and lowest concentration of this metal in stem of Typha latifolia was 0.036±0.001 mg Kg-1 (P<0.05). The highest of nickel in root of Typha latifolia was 4.770±0.045 mg Kg-1 and lowest concentration of nickel in stem of Phragmites australis was 0.843±0.072 mg Kg-1 (P<0.05). The highest of vanadium in root of Typha latifolia was 16.553±0.128 mg Kg-1 and lowest concentration of vanadium in stem of Phragmites australis was 3.136±0.015 mg Kg-1 (P<0.05).The concentrations of cadmium, nickel and vanadium were obtained in the root of Phragmites australis and Typha latifolia above the leaves and stems (P<0.05). Cadmium in the roots, stems and leaves of the Phragmites australis was higher than the Typha latifolia, but the amount of nickel and vanadium in the roots, stems and leaves of Typha latifolia were higher than Phragmites australis (P<0.05). Manuscript profile
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  6 - Chemical and physical analysis of some ground water sample in Al-Quti wells Hodiedah, Yemen
  Badr Ismael Abdul Razzak Atta Ibraheem Atta
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  7 - A Comparison of Bird Feathers and Plant Leaves as a Biological Tool for Assessing Air Pollution by some Heavy Elements
  Asaad Alhesnawi
  10.22034/jchr.2023.1927565.1294
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