Health and environment
Seyyed Mostafa Abtahi; Mohammad Taghi Alipour; Mahmoud Naghdbishi; Gea Oliveri Conti; Mohammad Miri
Volume 28, Issue 1 , January and February 2021, , Pages 56-66
Abstract
Introduction: Polycyclic aromatic hydrocarbons (PAHs) have several adverse effects on human health and environment in the short and long term. In this study, a systematic review of the studies carried out to date on the removal of PAHs from contaminated soils by electrokinetic method and determining ...
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Introduction: Polycyclic aromatic hydrocarbons (PAHs) have several adverse effects on human health and environment in the short and long term. In this study, a systematic review of the studies carried out to date on the removal of PAHs from contaminated soils by electrokinetic method and determining the parameters affecting this process has been investigated. Materials and Methods: This research is a systematic review study. For this purpose, the keywords related to PAHs pollutants and electrokinetic methods were first prepared. Search in scientific databases including Scopus, Web of Science and PubMed was done. After completion of the search, the findings of search was transferred to the Endnote software and screening was done to reach articles that are fully related to the subject. Results: A total of 571 articles were found until September 10, 2018 from the mentioned data basis. Then, 10 studies were carefully reviewed after removing duplicates and non-compliant items. The included studies were from 2000 to 2017. In 3 studies, electrochemical methods with surfactants and biosurfactants were used. Four studies utilized biodegradation techniques along with electro-kinetics. Combination of the electrokinetic with other processes can increase the efficiency of this process in removing PAHs from soil in a short period (less than 1 month). Conclusion: Considering the influence of different parameters on the process, it is recommended to conduct a pilot test to optimize the process before the implementation of this method.
Mohammad Miri; Seyede Mojgan Mosavi Bideli; Mehdi Mokhtari; Hamideh Ebrahimi Aval
Volume 23, Issue 3 , July and August 2016, , Pages 392-397
Abstract
Background Vegetables are important components of a healthy and proper diet. The main route of entry of heavy metals into the body is through the foods, especially vegetables. Because the use of wastewater for irrigation has become a common practice, and the standards in this regard are not met, especially ...
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Background Vegetables are important components of a healthy and proper diet. The main route of entry of heavy metals into the body is through the foods, especially vegetables. Because the use of wastewater for irrigation has become a common practice, and the standards in this regard are not met, especially the products that are consumed raw materials like vegetables can threaten public health. Therefore, in this study, the concentrations of heavy metals (lead, cadmium, arsenic) in vegetables distributed in green groceries of Yazd City, Iran were measured.Materials & Methods This research was a cross-sectional study. Over 2 months, 40 samples of vegetables (parsley, coriander, leek, and lettuce), (20 samples in each month) were randomly selected from Yazd greengroceries and prepared according to the standard method for determining the concentration of heavy metals by atomic absorption spectrometry. Data analysis was performed using SPSS and Excel. Finally, the obtained data were compared with the standards of the World Health Organization and Food and Agriculture Organization.Results The average values of the studied heavy metals in vegetables were different. Parsley had the highest total concentration of heavy metals (518 mg/kg), and lettuce had the lowest total concentration of heavy metals (305 mg/kg).Conclusion The concentration of heavy metals was more than WHO and FAO standards. Probably soil or water that is used for vegetable growth has a lot of heavy metals and is not standard for vegetable irrigation. Therefore, controlling policies from respective organizations are of necessity.