List of Articles آرسنیک

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  1 - A Review of Arsenic Removal Methods from Water Resources
  Marzieh Hasanzadeh Fariba Ostovar
  10.29252/.4.6.39
  Many of the pollutants in water are known to be harmful for human health and toxic for environment. Among these pollutants, Arsenic is more important because millions of people are exposed to contaminated drinking water. The World Health Organization (WHO) has identifie More

  Many of the pollutants in water are known to be harmful for human health and toxic for environment. Among these pollutants, Arsenic is more important because millions of people are exposed to contaminated drinking water. The World Health Organization (WHO) has identified the permitted limit of below 0.01 mg/L (10 micrograms per liter) for arsenic in drinking water and the same amount for arsenic has been reported in Iran's 1053 standard. In this study, various techniques have been investigated for removing Arsenic and efficiency of different nanoparticles in treatment of Arsenic from drinking water. Common methods of removing Arsenic from water sources are including oxidation, coagulation and flocculation, reverse osmosis and ultrafiltration, ion exchange, phytoremediation and new technologies based on the use of nanoparticles. The findings showed that despite of the high arsenic removal percentage using different methods such as oxidation, ion exchange and floating with dissolved air, these methods are not economic and a lot of time is required to achieve optimal efficiency. Recently, the use of nanoparticles has become very popular, so that metal oxide nanoparticles such as magnetic iron, Zinc, Copper, Serum, and Aluminum can completely eliminate Arsenic soluble with a high concentration of 50 mg/L in water sources and after the adsorbent is saturated, it is possible to use the regeneration of adsorbents, repeatedly by adsorbing the pollutant into the adsorbent. As a result, the use of nanoparticles is better than chemical processes and is economic due to their high efficiency in a short time. Manuscript profile
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  2 - Study of arsenic contamination soil and water resources of coalmining region Sangrood loshan
  فرزاد  ستوهیان Mohsen  Ranjbaran Saeed Sharifi
  Environmental pollution caused by coal mining operation sharmful and toxic elements Sangrood series with the release of mineral processing and tailings deposit sit into the hydrological system (surface and underground) and soil is. Complications such as ulceration, skin More

  Environmental pollution caused by coal mining operation sharmful and toxic elements Sangrood series with the release of mineral processing and tailings deposit sit into the hydrological system (surface and underground) and soil is. Complications such as ulceration, skin damage and cancers of the nasal tract can be dangerous due to high levels of arsenic in drinking water, especially in these areas. The aim of the present study was to investigate the environmental effect of Arsenic on Sangrood loshan mine which is one of the active mines in province. Sampling was done on 60 soil types and 14 water samples in 4 stations in the mine zone. The results of the present study showed that the level of Arsenic element in the sampling stations is more than standard level and permissible limit. Sulfur content of the coal in this area have been moderate to high mainly pyrite. Arsenic concentration sin soils greater than rocks. Many compounds are readily soluble in water and can contaminate water. Manuscript profile
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  3 - Source and health risk assessment of arsenic in the water resources of Takab mining area
    N. Heydarian
  Arsenic is one of the heavy metals having harmful effects on human health if enters into the environment and water resources, so the major challenge of arsenic exposure is related to drinking water. The study area is Takab watershed in West Azarbaijan, which includes tw More

  Arsenic is one of the heavy metals having harmful effects on human health if enters into the environment and water resources, so the major challenge of arsenic exposure is related to drinking water. The study area is Takab watershed in West Azarbaijan, which includes two large Zarshouran and Agh Dareh gold mines in Carlin type. Carlin gold mines are sulphidic that are able to pollute the downstream environmental resources such as arsenic. In this work, the carcinogenic and non-carcinogenic health risks associated with arsenic was evaluated for the human community, who are living in Takab watershed and are exposed to arsenic through oral and dermal pathways with contaminated water sources . 45 water samples were randomly collected from surface and groundwater resources in the study area with regard to expert judgment and the distribution points, analyzed by ICP-MS method. Then, the health risk was assessed using by target cancer risk (TR), risk coefficient (HQ) and index hazard (HI). The total results showed that arsenic contamination is derived from volcanic activities and Quaternary alteration and gold mining activities in the east and north of the region. Most of the samples were revealed a range of 9-10 and -100 to -250 mV as pH and oxidation-reduction potential, respectively, which indicates the predominance of arsenate species (As5+) in the form of H2AsO4-. HQ and HI values are more than 10 in 52% of the samples, which indicate the high health risk in people living in the study area. Carcinogenic risk level varies from 0 to 2×10-7, which shows no carcinogenic risk to very high risk by arsenic contamination in water resources. Overall, there are both risks of carcinogenesis and non-cancerous impact in the east and north of the region for intake by ingestion, drinking and skin contact due to water contamination from the natural and anthropogenic sources. Therefore, it is recommended to pay special attention to continuous monitoring for potential contaminant, different methods for preventing exposure to polluted water resources and treatment methods in order to minimize the health risk of the population. Manuscript profile