Papers by Mohammad ghanbari
Anyone can freely access the full text of works made available as "Open Access". Works made avail... more Anyone can freely access the full text of works made available as "Open Access". Works made available under a Creative Commons license can be used according to the terms and conditions of said license. Use of all other works requires consent of the right holder (author or publisher) if not exempted from copyright protection by the applicable law.
Urmia medical journal, Aug 10, 2014
Background & Aims: Health effects of air pollution have increased recently and there are a lot of... more Background & Aims: Health effects of air pollution have increased recently and there are a lot of concerns. Troposphere ozone is a pollutant that mainly enters the body through the respiration. This gas cause respiratory complications (reduced lung capacity, asthma, and nasal congestion), eye burning sensation, and failure of immune defense against infectious diseases. This study was conducted to examine the hygienic effects of ozone pollution in Tabriz since it is one of the polluted Iranian metropolises. Materials & Methods: Ozone data were taken from the Department of Environment Office of East Azerbaijan Province in Tabriz (TDOE). Conversion between volumetric and gravimetric units (correction of temperature and pressure), processing and filtering were implemented. The hygienic effects resulting from exposure to ozone gas (such as mortality rates, Respiratory diseases, cardiovascular diseases and COPD) were estimated using Air Quality Model in Tabriz. The results of this study showed that the relative risk (RR) attributed proportion (AP) and cumulative of total mortality made by the ozone were 350 persons respectively in Tabriz. O 3 (1 hour average) and 98 th percentile of ozone was 63.21 and 99.06 μg/m 3 respectively. About 2.4% of the cardiovascular mortalities, 0.27% of respiratory mortalities and 0.3% of the patient's hospitalization suffering from the chronic pulmonary clogging have been attributed to more than 10 micrograms per cubic meter of the ozone concentrations in Tabriz. This study showed for 10 μg/m 3 increase in ozone concentration, the risk of mortality increased about 0.45%. Also the results of other studies showed ozone pollution in metropolitan of Tabriz is approximately equal with Tehran. Therefore, air pollution in Tabriz must be considered as a serious problem and requires the attention of the decision makers for the control of it. The higher ozone pollutant value can depict mismanagement in urban air quality.
Science of The Total Environment, Sep 1, 2020
Effects of air pollution on MDA, vWF, and fibrinogen markers were evaluated • Changes in biomarke... more Effects of air pollution on MDA, vWF, and fibrinogen markers were evaluated • Changes in biomarkers varied by the source of particle exposures • Dust storm was associated with elevated MDA, vWF, and fibrinogen levels • Urban air pollution increases vWF biomarker more than dust storm • In urban area effect of dust storm on MDA and fibrinogen was greater than inversion
Microchemical Journal, May 1, 2020
This is a PDF file of an article that has undergone enhancements after acceptance, such as the ad... more This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.
Desalination and Water Treatment, Oct 27, 2015
AbstractResponse surface methodology involving Box–Behnken design was used to evaluate the effect... more AbstractResponse surface methodology involving Box–Behnken design was used to evaluate the effects of three operating variables: pH, initial concentration of phosphorus, and adsorbent dosage on biosorption of phosphorus by modified Lemna minor by lab-scale batch study. Analysis of variance (ANOVA) showed pH, initial phosphorus concentration, interaction of phosphorus and adsorbent dose and the second-order effect of pH have values of “Prob. > F” less than 0.0500 indicating that model terms are significant for the biosorption of phosphorus. Optimum operational conditions for maximizing phosphorus biosorption were achieved at pH 4.8, initial phosphorus concentration of 19 mg/L and adsorbent dosage of 5.15 g/L. Under optimal value of parameters, high biosorption (89.2%) was obtained for phosphorus. Langmuir with 0.99 consistencies fitted better than Temkin, or Freundlich models. The maximum adsorption capacity of phosphorus was determined as 3.6 mg/g. Pseudo-second-order kinetic model exhibited the highest c...
Human and Ecological Risk Assessment, Nov 13, 2017
ABSTRACT The aim of this study is to survey the PM10, PM2.5, and PM1 concentrations in rural and ... more ABSTRACT The aim of this study is to survey the PM10, PM2.5, and PM1 concentrations in rural and urban areas in Tehran province during cold, warm and dust storm days from December 22, 2016 to June 5, 2017 using Grimm Model aerosol spectrometer. During the study period, daily PM10, PM2.5, and PM1 concentrations ranged from 27.2 to 244.96, 8.4 to 77.9, and 6.5 to 56.8 μg/m3 in urban sites, and 22.8 to 286.4, 6 to 41.1, and 2.1 to 20.2 μg/m3 in rural parts, respectively. Particularly, both daily WHO limits for outdoor PM10 (50.0 μg/m3) and PM2.5 (25.0 μg/m3) exceeded in 95% and 83% of the outdoor measurements in winter and 82% and 58% in total sampled days in urban site, respectively. The 24-h average PM10 and PM2.5 concentrations also exceeded by 59% and 18% in winter and by 36% and 14% of all sampling days in rural site, respectively. During the dust storm, the 24-h average PM10, PM2.5, and PM1 concentrations were, respectively 4.7, 2, and 1.96 times higher than those in urban site and 2, 1.7, and 1.3 times more than those in rural site in all sampled days.
Science of The Total Environment, Mar 1, 2021
Background: Ambient sulfur dioxide (SO 2) remains a major air pollutant in developing countries, ... more Background: Ambient sulfur dioxide (SO 2) remains a major air pollutant in developing countries, but epidemiological evidence about its health effects was not abundant and inconsistent. Objectives: To evaluate the associations between short-term exposure to SO 2 and cause-specific mortality in China. Methods: We conducted a nationwide time-series analysis in 272 major Chinese cities (2013-2015). We used the over-dispersed generalized linear model together with the Bayesian hierarchical model to analyze the data. Twopollutant models were fitted to test the robustness of the associations. We conducted stratification analyses to examine potential effect modifications by age, sex and educational level. Results: On average, the annual-mean SO 2 concentrations was 29.8 μg/m 3 in 272 cities. We observed positive and associations of SO 2 with total and cardiorespiratory mortality. A 10 μg/m 3 increase in two-day average concentrations of SO 2 was associated with increments of 0.59% in mortality from total non-accidental causes, 0.70% from total cardiovascular diseases, 0.55% from total respiratory diseases, 0.64% from hypertension disease, 0.65% from coronary heart disease, 0.58% from stroke, and 0.69% from chronic obstructive pulmonary disease. In two-pollutant models, there were no significant differences between single-pollutant model and twopollutant model estimates with fine particulate matter, carbon monoxide and ozone, but the estimates decreased substantially after adjusting for nitrogen dioxide, especially in South China. The associations were stronger in warmer cities, in older people and in less-educated subgroups. Conclusions: This nationwide study demonstrated associations of daily SO 2 concentrations with increased total and cardiorespiratory mortality, but the associations might not be independent from NO 2 .
Journal of Industrial and Engineering Chemistry, 2018
The development and design of adsorbents with high adsorption performance is an effective method ... more The development and design of adsorbents with high adsorption performance is an effective method of removing p-Cresol from effluent for environmental protection. Therefore, an Al2O3 coated multiwalled carbon nanotubes (MWNTs) composite for adsorption of p-cresol from aqueous solution was synthesized. The P-Cresol concentration was determined by estimating the absorbance of the sample solution on a DR5000 UV/Vis spectrophotometer. Box-Behanken design (BBD) was involved in the optimization of p-Cresol adsorption upon Al2O3 coated MWNTs adsorbent against the process parameters time, pH and adsorbent dose. The effects of these factors were studied in the ranges 5-40 min, 4-10, and 0.2-2 g l−1, respectively. The lack of fit obtained for this model was 0.357 which confirmed that the model is highly significant and the experiments are accurate and reliable. The results showed that adsorption isotherms fit well with the pseudosecond-order kinetic model and Langmuir isotherm model and Qmax was calculated to be 54.05 mg/g. Our results demonstrate that Al2O3 coated MWNTs has the potential to be used as an effective adsorbent for the rapid uptake of p-Cresol from aqueous solutions.
DESALINATION AND WATER TREATMENT, 2019
Journal of Environmental Health Science and Engineering, 2019
Particulate matter (PM) as the carcinogenic air pollutants can lead to aggravated health outcomes... more Particulate matter (PM) as the carcinogenic air pollutants can lead to aggravated health outcomes. Epidemiological studies demonstrated that PM can be engaged in different diseases such as cardiovascular, respiratory and cancer. The in vitro secretion of proinflammatory cytokines by human peripheral blood mononuclear cells (PBMCs) has been used to assess the effects of PM with an aerodynamic diameter < 10 μm (PM 10). This study compared the proinflammatory cytokines tumor necrosis factor alpha (TNF-α), interleukin 6 (IL-6), and interleukin 1-beta (IL1-β) secretions of PBMCs exposed to PM 10 of dust storm and inversion. We collected PM 10 samples during the spring and autumn seasons in two locations. Isolated PBMCs were exposed separately to 50, 150, and 300 μg/ml of different type of PM 10 for 4 and 24 h. The mean concentrations of TNF-α for the PM of dust storm and inversion were 6305.61 ± 2421 and 6651.74 ± 2820, respectively. Also the mean concentrations of IL1-β for the PM of dust storm and inversion were 556.86 ± 162 and 656.35 ± 196, respectively. Furthermore, these values for the production of IL-6 were 12,655 ± 5661 and 16,685 ± 8069, respectively. Although no significant difference was observed between the PM of dust storm and that of inversion with regard to PBMCs, the results showed a significant increase in the proinflammatory cytokine secretion of both PMs compared with the controls. Moreover, TNF-α, IL1-β, and IL-6 secreted in cells exposed to PM 10 of dust storm were about 10 times more than the controls, these values for cells exposed to PM 10 of inversion were around 10, 12, and 14 times more than the controls, respectively. It can be concluded that the PM 10 of both dust storm and inversion can play a significant role in proinflammatory cytokine secretion due to its harmful effect on human health.
Journal of Environmental Health Science and Engineering, 2018
In the present study, we investigated the characteristics of metal(loid)s, polycyclic aromatic hy... more In the present study, we investigated the characteristics of metal(loid)s, polycyclic aromatic hydrocarbons (PAHs) and oxidative potential (OP) in PM 10 during dust and non-dust days in a rural and an urban area in Tehran. Water-soluble ions, metal(loid)s, PAHs, and OP were measured using ion chromatography (IC), inductively coupled plasma optical emission spectrometer (ICP-OES) and gas chromatography/mass spectrometry (GC-MS), and dithiothreitol (DTT) assay respectively. The results showed that the average concentrations of ambient PM 10 were 284 ± 90.4 and 123 ± 31.4 μg m −3 on dusty and regular days in urban areas respectively, and were 258 ± 48.3 and 124 ± 41.4 μg m −3 on dusty and regular days in rural areas, respectively; these values were 95% above the World Health Organization (WHO) guideline level. The crustal elements Na + , Mg 2+ , Ca 2+ , Al, Si, Fe and Ti were the dominant for PM 10 on dusty days, and NO − 3 and SO 4 2− were dominant for PM 10 on regular days. The average ± SD concentrations of total PAHs were 34.3 ± 22.5 and 55.1 ± 28.3 ng m −3 on dusty and regular days, respectively, with the maximum value occurring on inversion days. The average OP was 8.90 ± 7.15 and 1.41 ± 0.35 and was 11.4 ± 3.97 and 19.9 ± 8.67 (nmol min −1 μg PM 10 −1) for water and methanol extracts on dusty and regular days, respectively, with the lowest value occurring on dusty days. The OP was highly associated with Cu and Mn. Briefly; the results of this study demonstrate that OP is mass independent and consequence a promising proxy for PM mass.
Biological trace element research, Jan 4, 2018
The original version of this article unfortunately contained a mistake. Figure 6 caption should b... more The original version of this article unfortunately contained a mistake. Figure 6 caption should be "The light microscopic image (a) and transmission electron microscopic image (b) of A549 cell after 24 h of exposure to PM10 (150 μg/ml).
Environmental pollution (Barking, Essex : 1987), 2017
Systemic inflammation biomarkers have been associated with risk of cardiovascular morbidity and m... more Systemic inflammation biomarkers have been associated with risk of cardiovascular morbidity and mortality. We aimed to clarify associations of acute exposure to particulate matter (PM10 (PM < 10 μm), PM2.5-10 (PM 2.5-10 μm), PM2.5 (PM < 2.5 μm), PM1-2.5 (PM 1-2.5 μm), and PM1 (PM < 1 μm)) with systemic inflammation using panels of elderly subjects and healthy young adults. We followed a panel of 44 nonsmoking elderly subjects living in a retirement home and a panel of 40 healthy young adults living in a school dormitory in Tehran city, Iran from May 2012 to May 2013. Blood biomarkers were measured one every 7-8 weeks and included white blood cells (WBC), high sensitive C-reactive protein (hsCRP), tumor necrosis factor-soluble receptor-II (sTNF-RII), interleukin-6 (IL-6), and von Willebrand factor (vWF). We measured hourly indoor and outdoor exposure to PM10, PM2.5-10, PM2.5, PM1-2.5, and PM1 mass concentration to derive weighted averages of personal exposure based on simult...
Atmospheric Pollution Research, 2016
Kermanshah as fairly important industrial city suffered from air pollution specially dust storm d... more Kermanshah as fairly important industrial city suffered from air pollution specially dust storm during the recent decade. The main purpose of this study was to compare quantitatively the health impacts of PM 10 on citizens of Kermanshah city during two successive years. The hourly data of PM 10 was taken from Kermanshah Environmental Protection Agency (KEPA) which was measured by Beta attenuation method. We used a health effect model for quantification which was based on baseline incidence (BI), relative risk (RR) and attributable proportion (AP). Our findings showed that 7.6, 11, 15.1, 13.5 and 7.6 percent of total mortality (TM), cardiovascular mortality (CM), respiratory mortality (RM), hospital admission respiratory disease (HARD) and hospital admission cardiovascular disease (HACD) were attributable to short term exposure to PM 10 , respectively in 2011. With regarding to two years in view of short term health effects, we observed that 20 percent reduction occurred in 2012 compared with 2011. We also concluded that 48 and 12 percent of all health impacts were attributed to occurrence of Middle East Dust (MED) storms during 2011 and 2012, respectively.
Environmental Research, 2016
Chronic obstructive pulmonary disease (COPD) is an important disease worldwide characterized by c... more Chronic obstructive pulmonary disease (COPD) is an important disease worldwide characterized by chronically poor airflow. The economic burden of COPD on any society can be enormous if not managed. We applied the approach proposed by the World Health Organization (WHO) using the AirQ2.2.3 software developed by the WHO European Center for Environment and Health on air pollutants in Tabriz (Iran) (2011-2012 year). A 1h average of concentrations of ozone (O3), daily average concentrations of nitrogen dioxide (NO2) and sulfur dioxide (SO2) were used to assess human exposure and health effect in terms of attributable proportion of the health outcome and annual number of excess cases of Hospital Admissions for COPD (HA COPD). The results of this study showed that 2% (95% CI: 0.8-3.1%) of HA COPD were attributed to O3 concentrations over 10μg/m(3). In addition, 0.7 % (95% CI: 0.1-1.8%) and 0.5% (95% CI: 0-1%) of HA COPD were attributed to NO2 and SO2 concentrations over 10μg/m(3) respectively. In this study, we have shown that O3, NO2 and SO2 have a significant impact on COPD hospitalization. Given these results the policy decisions are needed in order to reduce the chronic pulmonary diseases caused by air pollution and furthermore better quantification studies are recommended.
Desalination and Water Treatment, 2015
In this study, the potential of natural pumice (NP) and iron-coated pumice stone (Fe-CP) as novel... more In this study, the potential of natural pumice (NP) and iron-coated pumice stone (Fe-CP) as novel low-cost adsorbents to remove ethidium bromide (EtBr) from aqueous solutions was investigated. The operational parameters affecting removal efficiency and adsorption capacity such as adsorbent dose, initial EtBr concentration, pH, and contact time were studied in order to maximize EtBr removal. The maximum amount of adsorbed EtBr (q m) using NP and Fe-CP was 40.25 and 45.08 mg g-1 , respectively. It was found that EtBr adsorption followed the Freundlich isotherm model and fitted the pseudo-second-order kinetics equation for both adsorbents. In addition, the experimental system could be easily modeled by artificial neural network calculations.
Science of The Total Environment
Occupational and Environmental Medicine, 2002
Environmental Science and Pollution Research, 2014
Air pollution in cities is a serious environmental problem especially in the developing countries... more Air pollution in cities is a serious environmental problem especially in the developing countries. We examined the associations between gaseous pollutants and hospitalizations for chronic obstructive pulmonary diseases (COPD) among people living in Tabriz, a city in north western of Iran. We used the approach proposed by the World Health Organization (WHO) using the AirQ 2.2.3 software developed by the WHO European Center for Environment and Health, Bilthoven Division. To assess human exposure and health effect, data were used for ozone as a1h average; for nitrogen dioxide and sulfur dioxide as daily average concentrations. The association between air pollution and chronic obstructive pulmonary disease (COPD) was assessed using AirQ 2.2.3 model. The results of this study showed that 3 % (95 % CI 1.2-4.8 %) of HA COPD were attributed to O3 concentrations over 10 μg/m(3). Also, 0.9 % (95 % CI 0.1-2.2 %) and 0.4 % (95 % CI 0-1.1 %) of HA COPD were attributed to NO2 and SO2 concentrations over 10 μg/m(3), respectively. For every 10 μg/m(3) increase in O3, NO2, and SO2 concentrations, the risk of HA COPD increase to about 0.58, 0.38, and 0.44 %, respectively. We found significant positive associations between the levels of all air pollution and hospital admissions COPD. Otherwise, O3, NO2, and SO2 have a significant impact on COPD hospitalization.
Background: Environmental Health Indicators (EHIs) are the most important criteria for evaluation... more Background: Environmental Health Indicators (EHIs) are the most important criteria for evaluation of efficiency and effectiveness of the activities of the health sector. The operations and situation of the health system can be analyzed through surveying the indicators and comparing them during different times. The present study aimed to study the EHIs of Tabriz, using the common environmental health processes and national EHIs of the Ministry of Health. Method: The required information for determination of EHIs was collected from different sources, including mainly the Environmental Health Department of the Health Center of East Azerbaijan Province, Iran and other organizations. Results: We found some important desirable and undesirable EHIs in Tabriz, including high percentage of households with access to safe and reliable drinking water, high safety in microbiological and chemical quality of drinking water, acceptable level of BOD 5 and COD in the effluent of wastewater treatment plants (WTP), lack of complete municipal wastewater collection and treatment, relatively poor sanitation and health of food markets and public places, undesirable collection, transportation and disposal of municipal solid waste, low EHIs of some school classrooms, unacceptable disposal of medical waste in some hospitals, and finally high level of noise pollution in the city. Conclusion: Considering the poor condition of some EHIs of Tabriz, implementing proper actions for promotion of the indicators especially development of municipal wastewater collection, improvement of solid waste management, environmental health of some schools and mosques, and finally the noise pollution level of the city is recommended.
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Papers by Mohammad ghanbari