Publications by authors named "Soheil Sobhanardakani"

12 Publications

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Analysis, spatial distribution and ecological risk assessment of arsenic and some heavy metals of agricultural soils, case study: South of Iran.

J Environ Health Sci Eng 2020 Dec 27;18(2):665-676. Epub 2020 Jul 27.

Department of Agriculture, Sayyed Jamaleddin Asadabadi University, Asadabad, Iran.

Purpose: In this study, rates of arsenic, cadmium, chromium, copper, lead and zinc contents in agricultural soils from Eghlid County, south of Iran, were determined to assess the soil pollution and potential ecological risk index (PERI) and also spatial distribution of such elements.

Method: A total of 100 topsoil specimens were collected from 100 sampling stations. In the laboratory, after acid digestion the element contents in soil samples were determined using ICP-OES. Then, the soil contamination and also ecological risk of the soil were assessed using various indices especially Igeo, PI, IPI, PLI and PERI. Also, the spatial distribution maps of the studied elements in soil specimens were made using the kriging interpolation technique by ArcGIS software (10.4).

Results: Based on the results, the mean contents (mg/kg) of the elements in specimens were 1.85, 2.80, 19.04, 19.35, 7.17 and 38.77 for As, Cd, Cr, Cu, Pb and Zn, respectively. Arsenic and Cu contents were comparable to background values, while Cd contents were higher than their corresponding background values. The results of principal component analysis (PCA) and hierarchical cluster analysis (HCA) revealed that Cd had anthropogenic sources; while, other elements originated from natural sources. Pollution index (PI) values of As, Cd, Cr, Cu, Pb and Zn varied in the range of 0.45-1.49, 0.52-32.09, 0.096-0.33, 0.36-1.35, 0.18-0.32 and 0.23-1.59, with mean values of 0.92, 12.17, 0.21, 0.68, 0.21 and 0.96, respectively. The integrated pollution load index (PLI) values of the specimens with an average value of 0.84, indicated that 65% and 35% of soil samples were moderately and low contaminated, respectively. The mean value of PERI with 380.32 implied that the agricultural soils of the study area could be classified of high ecological risk. The spatial distribution of content of the elements showed that Cd had high spatial variability.

Conclusions: Although in the short run, the contents of the elements found in the agricultural soil samples may not be alarming for agricultural production and consequently human health, signals it can be observed especially for Cd in the long term due to the impact of anthropogenic activities that lead to the discharge of this element to the environment and can result in its accumulation in agricultural soils. In conclusion, as it is expected that the metal inputs increase in the future, it is recommended that plant analyses be included in the future studies for determining the impact of the amount of bioavailable metals.
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http://dx.doi.org/10.1007/s40201-020-00492-xDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7721769PMC
December 2020

Heavy metal concentrations in roadside plants (Achillea wilhelmsii and Cardaria draba) and soils along some highways in Hamedan, west of Iran.

Environ Sci Pollut Res Int 2020 Apr 4;27(12):13301-13314. Epub 2020 Feb 4.

Department of Agriculture, Sayyed Jamaleddin Asadabadi University, Asadabad, Iran.

The present study was conducted to analyze the effects of traffic volumes on Cd, Cu, Pb, Ni, and Zn contents in roadside soils and in two dominant herbaceous species (Achillea wilhelmsii and Cardaria draba) along highways and to evaluate the dynamic characteristics of these elements and their accumulation by the aerial parts and roots of these herbaceous species. The plant samples were collected along 700 m of a 9-km segment of each of the three major highways in Hamedan Province (West Iran) with different traffic volumes: Hamedan-Goltapeh (HG), Hamedan-Razan (HR), and Hamedan-Kermanshah (HK). The results indicated that the mean contents of Cd, Cu, Pb, Ni, and Zn in the soil samples were 0.26, 18.74, 14.98, 18.21, and 62.25 mg kg, respectively. Furthermore, the mean contents of elements (mg kg) in aerial parts of A. wilhelmsii were 0.16 for Cd, 4.52 for Cu, 1.91 for Pb, 1.70 for Ni, and 44.80 for Zn, while in the aerial part samples of C. draba, the concentrations (mg kg) and the mean contents were 0.16, 2.29, 2.58, 1.60, and 31.29, respectively. This meant that the traffic volume affected the contents of the metals in the soil and the herbaceous species. The metal content in herbaceous tissues varied significantly between plant species. A. wilhelmsii tended to accumulate the metals in the roots while C. draba retained them mostly in the aerial parts. The significant positive correlations of Cd, Cu, Ni, and Zn content in root and aerial parts of the herbaceous plant with those found in the soil samples showed the potential of the studied species for application in biomonitoring studies. Comprehensive analysis (effect of traffic volumes and relationships between the content of elements in plant tissues and soil samples) indicated that Cu in both herbaceous plants was mainly derived from soil, while A. wilhelmsii absorbed Cd and C. draba absorbed Zn mainly through the stomata from atmospheric depositions. Without considering atmospheric depositions due to intense traffic volumes, in A. wilhelmsii, the translocation factor (TF) values of Cu and Zn were 1.06 and 1.44, respectively and in C. draba, the TF values of Cd, Cu, and Pb were 1.06, 1.09, and 1.13, respectively, thus suggesting that both herbaceous species had high potentials for transferring metals from the roots to aerial parts.
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http://dx.doi.org/10.1007/s11356-020-07874-6DOI Listing
April 2020

Biochar obtained from cinnamon and cannabis as effective adsorbents for removal of lead ions from water.

Environ Sci Pollut Res Int 2019 Sep 25;26(27):27905-27914. Epub 2019 Jul 25.

Department of Physics, College of Basic Sciences, Hamedan Branch, Islamic Azad University, Hamedan, Iran.

The feedstock from cinnamon (CI) and cannabis (CA) were used for providing biochar at different temperatures using the pyrolysis method (300, 400, and 600 °C) as appropriate adsorbents for removing Pb(II) ions. The properties of materials were examined with varied techniques. The BET surface area of CI600 and CA600 was higher compared with others. The adsorption efficiency of Pb(II) ions relies on initial Pb(II) concentration, pH, adsorbent dose, equilibrium time, and temperature. The adsorption isotherms of Pb(II) ions were assessed via Langmuir adsorption isotherm and the pseudo-second-order model and electrostatic interaction became visible to play the main role in the adsorption process.
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http://dx.doi.org/10.1007/s11356-019-05997-zDOI Listing
September 2019

Surveying the efficiency of Platanus orientalis bark as biosorbent for Ni and Cr(VI) removal from plating wastewater as a real sample.

Environ Monit Assess 2019 May 18;191(6):373. Epub 2019 May 18.

Department of Chemistry, Shahr-e Qods Branch, Islamic Azad University, Tehran, Iran.

Heavy metals make up one of the most important pollutants in industrial wastewater. For wastewater, adsorbent materials developed from suitable biomass can be effective in removing the heavy metal ions. In this study, the powder of the bark of Platanus orientalis was used as a biosorbent to remove Cr(VI) and Ni from a nickel-chromium plating wastewater as a real sample for the first time. Two different adsorbents were used in analyzing the data: modified and non-modified bark. The extent of adsorption was dependent on the pH (in the range of 1.5, 3, 5, 7, and 9), the time of contact (in the range of 30, 60, 90, 120 min), and the adsorbent dosage (different doses of 0.5, 1, 1.5, 2 g L). The concentration of unabsorbed metals was measured by inductively coupled plasma-optical emission spectroscopy (ICP-OES, Model Thermo iCAP 6000). The maximum removal of Cr(VI) was obtained 89.6% for non-modified bark and 90.7% for modified bark both at pH of 5 in 2 g L of adsorbent dosage in 300 min. While, the maximum Ni removal was obtained 74.5 and 56.5% for non-modified and modified bark, respectively, at pH 3 in 2 g L adsorbent dosage in 90 min. Based on the results, Freundlich isotherm appears better fitted in adsorption with a better correlation coefficient (R = 0.998) than that of Langmuir model with a correlation coefficient of R = 0.996. The q for Ni and Ni were 126.58 and 285.714 mg g and the q for Cr and Cr were 13.423 and 19.920 mg g, respectively. The FTIR studies indicated that S-O stretching group from sulfonate, surface O=H stretching, and also aliphatic C-H stretching are responsible for the adsorption. The SEM results obviously show the difference between the biomass surface before and after loading of ions. Ultimately, the present study concluded that P. orientalis could be a cheap and efficient biosorbent to adsorb and remove Cr(VI) and Ni from the plating wastewater; however, it seems more efficient for Cr(VI) with an average removal power of 90.15% than Ni with an average removal power of 65.75%.
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http://dx.doi.org/10.1007/s10661-019-7479-zDOI Listing
May 2019

Honeybees (Apis mellifera L.) as a Potential Bioindicator for Detection of Toxic and Essential Elements in the Environment (Case Study: Markazi Province, Iran).

Arch Environ Contam Toxicol 2019 Oct 24;77(3):344-358. Epub 2019 Apr 24.

Department of the Environment, College of Basic Sciences, Hamedan Branch, Islamic Azad University, Hamedan, Iran.

Honeybees, due to their wide-ranging foraging behaviour, have great potentials for monitoring environmental quality. Therefore, the purpose of this study was to use honeybees as bioindicators for the detection of toxic and essential metals (Cd, Cr, Cu, and Fe) in the environment. Totally, 180 soil, plant (including root and aerial part), honeybees, and honey samples were collected from 12 sites within the main beekeeping and honey production regions in Markazi Province, Iran in 2016. After acid digestion of samples, the metal concentrations were measured by inductively coupled plasma-optical emission spectrometers. The translocation factor (TF), and bioconcentration factor (BCF) of metals were computed. The results showed that among the analyzed bee samples, Cd (mg kg) was detected in amounts ranging from 0.01 to 2.35, Cr (mg kg) ranged from 0.02 to 18.10, Cu (mg kg) ranged from 2.00 to 39.11, and Fe (mg kg) ranged from 163 to 1695. BCF and TF values obtained showed that the Astragalus gossypinus would have a great accumulation ability for Cd and Cr. The results indicated that honeybees could be used to detect the spatial patterns of metal contaminations in the environment they dwell in.
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http://dx.doi.org/10.1007/s00244-019-00634-9DOI Listing
October 2019

Human Health Risk Assessment of Cd, Cu, Pb and Zn through Consumption of Raw and Pasteurized Cow's Milk.

Iran J Public Health 2018 Aug;47(8):1172-1180

Dept. of the Environment, College of Basic Sciences, Hamadan Branch, Islamic Azad University, Hamadan, Iran.

Background: The analysis of the residual contents of heavy and toxic metals in foodstuff especially milk could be an important indicator of safety, quality, and level of pollution of the region in which the milk was produced. Therefore, the present investigation was carried out to assess human health risk of residues levels of four metals (Cd, Cu, Pb, and Zn) through consumption of raw and pasteurized cow's milk.

Methods: In this analytical-observational study, totally 72 samples of raw and pasteurized cow's milk samples were collected from market basket of Hamadan City, western Iran in 2014. After preparation and processing the samples in the laboratory, the concentration of metals were determined using inductively coupled plasma (ICP-OES). Moreover, all statistical analyses were performed using the SPSS statistical package according to Shapiro-Wilk test for normality, One Way ANOVA (Duncan Multiple Range Test), Independent t-test and Pearson's correlations.

Results: The mean concentrations (μg/kg) of Cd, Cu, Pb and Zn in raw milk samples were 0.36±0.28, 9.77±3.91, 32.83±20.80 and 253.70±87.96, respectively and in the pasteurized milk samples were 5.57±9.33, 8.41±5.99, 25.54±26.50 and 90.12±91.52, respectively. HRI values in adults and children via consumption of raw and pasteurized cow's milk were within the safe limits (HRI < 1).

Conclusion: Considering the serious contamination of some samples of raw and pasteurized milk by Cd, Pb and Zn, a control of heavy metals content during the whole production processing of milk must be applied.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6123596PMC
August 2018

Human health risk assessment of potentially toxic heavy metals in the atmospheric dust of city of Hamedan, west of Iran.

Environ Sci Pollut Res Int 2018 Oct 1;25(28):28086-28093. Epub 2018 Aug 1.

Department of the Environment, College of Basic Sciences, Hamedan Branch, Islamic Azad University, Hamedan, Iran.

The atmospheric dust is an important route of human exposure to kinds of pollutants particularly toxic heavy metals. The current study was carried out to assess the ecological and health risk assessment of Co, Cr, and Mn in the atmospheric dust of city of Hamedan, Iran. In so doing, a total of 54 samples of atmospheric dust were collected from the three regions of the study area in 2014. After acid digestion of samples in the laboratory, the Co, Cr, and Mn contents were determined using inductively coupled plasma-optical emission spectrometer (ICP-OES). The results showed that the average contents (mg kg) of Co, Cr, and Mn in the analyzed samples were 0.23, 0.89, and 8.10, respectively. The results of human health risk assessment showed that ingestion of dust particles is the main exposure route to heavy metals in the dust for the local residents. Also, the upper limit of the 95% confidence interval of hazard indices for non-carcinogenic risks of all analyzed metals in the atmospheric dust was within the safe level (= 1) for both children and adults. The carcinogenic risk levels of Co and Cr were all lower than the acceptable range for local citizens. Based on the results, it can be suggested that special attention be paid to toxic heavy metals that long-term exposure to which via atmospheric dust can have adverse effects on the city resident health.
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http://dx.doi.org/10.1007/s11356-018-2818-0DOI Listing
October 2018

Ecological and Human Health Risk Assessment of Heavy Metal Content of Atmospheric Dry Deposition, a Case Study: Kermanshah, Iran.

Biol Trace Elem Res 2019 Feb 12;187(2):602-610. Epub 2018 May 12.

Department of the Environment, College of Basic Sciences, Hamedan Branch, Islamic Azad University, Hamedan, Iran.

The present study was intended to investigate the ecological and human health risk of cobalt, nickel, and vanadium in the atmospheric dry deposition of the Kermanshah city, Iran, in 2015. Totally 54 samples of atmospheric dry deposition were collected from the three regions of the city with different traffic intensity, and after acid digestion of the samples with ultrapure concentrated HNO, the total contents of the metals were determined using inductively coupled plasma optical emission spectrometer (ICP-OES). Also, all statistical analyses were performed using the SPSS statistical package. The atmospheric dry deposition element contents increase according to the following descending order for both autumn seasons: Ni > Co > V. The results of potential ecological risk analysis demonstrated that metals in the samples are in low ecological risk levels, whereas the results of human health risk assessment showed that ingestion is the main exposure pathway of heavy metals in the dust to the local residents compared with inhalation and dermal pathways. Also, the upper limit of the 95% confidence interval (95% UCL) of hazard indices for non-carcinogenic risks of all analyzed metals in the dust samples was within the safe level for both children and adults. On the other hand, the carcinogenic risk levels of Co and Ni were all lower than the acceptable range (10-10) to local citizens. Consequently, the results advocate the necessity of understanding the heavy metal content of atmospheric dry deposition and regular monitoring of air pollution.
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http://dx.doi.org/10.1007/s12011-018-1383-1DOI Listing
February 2019

Health risk assessment of arsenic and heavy metals (Cd, Cu, Co, Pb, and Sn) through consumption of caviar of Acipenser persicus from Southern Caspian Sea.

Environ Sci Pollut Res Int 2018 Jan 13;25(3):2664-2671. Epub 2017 Nov 13.

Department of Fisheries, College of Agriculture & Natural Resources, University of Tehran, Karaj, Iran.

In the current study contents of As, Cd, Cu, Co, Pb, and Sn were determined in the caviar of Persian sturgeon collected from Southern Caspian Sea sampling site. After acid digestion of caviar specimens, the concentrations of elements determined using ICP-OES. The results showed that the mean concentrations (mg kg) of elements in caviar samples were 0.01 for As, 0.05 for Cd, 1.42 for Cu, 0.01 for Co, 0.01 for Pb, and 0.28 for Sn and for all the elements are significantly lower than the adverse level for the human consumption. Also, health risk index (HRI) values were within the safe limits (HRI < 1). Therefore, there is no potential health risk to adults and children via consumption of caviar. Due to the discharge of hazardous chemicals into the marine ecosystems especially the Caspian Sea, residue analysis of pollutants in the sea foods is recommended.
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http://dx.doi.org/10.1007/s11356-017-0705-8DOI Listing
January 2018

Determination of toxic (Pb, Cd) and essential (Zn, Mn) metals in canned tuna fish produced in Iran.

J Environ Health Sci Eng 2015 11;13:59. Epub 2015 Aug 11.

Department of Food Science, Cornell University, Ithaca, New York USA.

Background: Metal pollution of waterways directly affects human health and can impact the food chain. Seafood living in polluted water can accumulate trace metals. The purpose of this study was to analyze the toxic metals Pb and Cd and the dietary essential metals Zn and Mn in 120 cans of tuna species from four different brands processed in Iran and purchased in 2012.

Results: The mean level of metals for each brands of canned fish obtained in mg/kg were as follows: yellowfin tuna (Pb: 0.19 ± 0.015, Zn: 5.77 ± 4.17, Mn: 0.08 ± 0.07, Cd: 0.15 ± 0.12), Kilka (Pb: 0.95 ± 0.88, Zn: 30.47 ± 29.82, Mn: 1.01 ± 0.73, Cd: 0.07 ± 0.05), Kawakawa (Pb: 0.28 ± 0.23, Zn: 6.77 ± 5.21, Mn: 0.17 ± 0.12, Cd: 0.12 ± 0.09), longtail tuna (Pb: 1.59 ± 1.56, Zn: 7.44 ± 6.11, Mn: 0.04 ± 0.03, Cd: 0.06 ± 0.04). Pb, Zn and Cd levels were generally higher than the FAO/WHO permissible limits (Pb: 0.50 mg/kg, Zn: 50.0 mg/kg and Cd: 0.50 mg/kg) and the European Union acceptable dietary limits.

Conclusions: Based on the United States Environmental Protection Agency health criteria, there is no health risk associated with Mn concentration in the samples analyzed. The limits of detection of the method for Pb, Zn, Mn and Cd in mg/kg were 0.01, 0.5, 0.01 and 0.01, respectively. The result of the one-way analysis of variance suggested significant variations (p < 0.05) in the concentration of the metals in the different types of canned fish with the following being outside of compliance levels.
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http://dx.doi.org/10.1186/s40201-015-0215-xDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4531440PMC
August 2015

2,4-Dinitrophenylhydrazine functionalized sodium dodecyl sulfate-coated magnetite nanoparticles for effective removal of Cd(II) and Ni(II) ions from water samples.

Environ Monit Assess 2015 Jul 7;187(7):412. Epub 2015 Jun 7.

Department of the Environment, College of Basic Sciences, Hamedan Branch, Islamic Azad University, Hamedan, Iran,

2,4-Dinitrophenylhydrazine immobilized on sodium dodecyl sulfate (SDS)-coated magnetite and was used for removal of Cd(II) and Ni(II) ions from aqueous solution. The prepared product was characterized by X-ray diffraction (XRD) analysis, Fourier transform infrared spectroscopy (FT-IR), and scanning electron microscopy (SEM). The size of the nanoparticles according to SEM was obtained around 20-35 nm. In batch tests, the effects of pH, contact time, initial metal concentration, and temperature were studied. The kinetic and equilibrium data were modeled with recently developed models. The adsorption kinetics and isotherms were well fitted by the fractal-like pseudo-second-order model and Langmuir-Freundlich model, respectively. Maximum adsorption capacity by this adsorbent is 255.1 mg g(-1) for Cd(II) ion and 319.6 mg g(-1) for Ni(II) ion at pH 7.0 and 25 °C. The method was successfully applied to the removal of metal cations in real samples (tap water, river water, and petrochemical wastewater).
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http://dx.doi.org/10.1007/s10661-015-4635-yDOI Listing
July 2015

Developing a bioindicator in the northwestern Persian Gulf, Iran: trace elements in bird eggs and in coastal sediments.

Arch Environ Contam Toxicol 2015 Feb 21;68(2):274-82. Epub 2014 Oct 21.

Department of Environmental Sciences, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran,

Levels of arsenic (As), cadmium (Cd), cobalt (Co), lead (Pb), nickel (Ni), selenium (Se), and vanadium (V) were evaluated in coastal sediments, egg contents, and eggshells of crab plover (Dromas ardeola), bridled tern (Sterna anaethetus), lesser crested tern (S. bengalensis), and western reef heron (Egretta gularis) breeding in the northwestern Persian Gulf. Levels of Cd, Pb, Ni, V, and Se were greater in eggs of terns than in eggs of crab plover, perhaps due to the higher trophic level of terns. Levels of all elements were lower than known effects levels for birds. However, levels of Se in eggs were greater than those known to cause toxic effects in birds. Eggs of terns are ideal for monitoring metal contaminants on the breeding grounds because the bioaccumulation ratios (egg/sediment) of some metals (As, Co, Se) in the eggs of terns are significantly greater compared with those of crab plovers.
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http://dx.doi.org/10.1007/s00244-014-0084-9DOI Listing
February 2015