Mohammad Velayatzadeh
Abstract
This analytical descriptive study was conducted to evaluate the carbon emissions from the use of fossil fuels for gasoline, petroleum gas, petroleum fuels and kerosene during the period of 1306 to 1394 in 1397. The amount of fossil fuel consumption in the period from 1306 to 1394 was collected using ...
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This analytical descriptive study was conducted to evaluate the carbon emissions from the use of fossil fuels for gasoline, petroleum gas, petroleum fuels and kerosene during the period of 1306 to 1394 in 1397. The amount of fossil fuel consumption in the period from 1306 to 1394 was collected using the statistics of consumption of petroleum products, which was published by the Public Relations Publications Office of the National Iranian Oil Products Distribution Company. The total consumption of petroleum products in the period between 1306 and 1394 shows that there was a positive growth, so that in 1394 it was consumed by 73.1 billion L. The amount of carbon emissions from gasoline consumption in the year 1306 and 1394 was 9234500 and 59607018500 kg of carbon dioxide per year, respectively. The consumption of gas, kerosene and kerosene has grown steadily over the years and the consumption of these fossil fuels has increased. The analysis of the results shows that gasoline consumption has increased. Gasoline is one of the most consumed fossil fuels in Iran, which is mainly used in light car transport. Of course, it should be noted that the Iranian population has grown positively since the last 40 years.
Mohammad velayatzadeh; Sina Davazdah Emami; Zahra Naserzadeh
Abstract
Background & Objective:Emission of Carbon dioxide in the atmosphere has an important role in increasing temperatures and, its higher concentration can effect on human health. Due to this issue, this study is aimed to measure the amount of the released carbon dioxide into the atmosphere in different ...
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Background & Objective:Emission of Carbon dioxide in the atmosphere has an important role in increasing temperatures and, its higher concentration can effect on human health. Due to this issue, this study is aimed to measure the amount of the released carbon dioxide into the atmosphere in different part of Yadavaran Oil field and compare with international standards in 2017. Material & Methods:The present investigation was accomplished in Yadavaran oil field of Khuzestan province of Iran in 2017. In this study measurement of parameters including carbon dioxide, carbon monoxide, oxygen, relative humidity and temperature was done in 64 stations with 3 replications using ALTAIR 4X and Trotec BZ30. Data was analyzed by one-way ANOVA and Kolmogorov–Smirnov tests. Moreover, Correlation analysis was performed using Pearson and Spearman coefficients. Results:The results showed that concentration range of carbon dioxide and oxygen was 490-590 and 19-208ppm respectively. Also, the highest and lowest levels of carbon dioxide were 584.56±6.36 and 453.94±77.7 ppm in wet water camp and S10 wells (P <0.05) correspndingly. The highest oxygen content was 20.92±0.041 ppm in S7 and F12 wells, but the lowest oxygen content was 19±0.059 and 19±0.042 in S10 and F17 wells (P> 0.05) in the same order. Conclusion:Pearson and Spearman coefficient analysis showed no significant correlation between temperature, humidity, oxygen and carbon dioxide. According to the results, the concentration of carbon dioxide in different areas of the oil field of Yadavaran was acceptable.
elham shahri; nematolah khorasani; gholamreza noori; ferdos kord mostafa pour; mohammad velayatzadeh
Abstract
Background & Objective: The heavy metals are considered as the pollutants which create too much problems in aquatic ecosystems for aquatics, and consequently, humans. This study aims to demystify risk assessment of some heavy metals concentrations such as Nickle, Cadmium, Lead and Zinc in the muscles ...
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Background & Objective: The heavy metals are considered as the pollutants which create too much problems in aquatic ecosystems for aquatics, and consequently, humans. This study aims to demystify risk assessment of some heavy metals concentrations such as Nickle, Cadmium, Lead and Zinc in the muscles of Otolithes ruber, Parastromateus niger, Scomberomorus commerson and Sphyraena jello fishes in 2013. Material & Methods: 96 samples from the aforementioned fishes were taken from both coastal and marine areas of Chabahar port (Oman sea). Wet Digestion method is applied to extract the considered metals from the tissues, and the concentrations of the heavy metals were measured by Atomic Absorption Spectrophotometer Younglin AAS8020. All statistical analyses were performed by SPSS (V. 17) using ANOVA along with Duncan test. Results: The results showed the highest and lowest concentrations of Cd were in Sphyraena jello and Otolithes ruber, respectively. The lowest Concentration of Pb was in Sphyraena jello. The highest and lowest concentrations of Ni and Zn were observed in Sphyraena jello and Scomberomorus commerson, correspondingly. The highest concentration of adsorbed Cd, Ni and Zn metals were measured in Sphyraena jello in the coastal area samples in children. Conclusion: Concentrations of Cd, Pb and Zn were lower than the determined proportions of FAO, WHO, UKMAFF, NHMRC and FDA. Ni concentration was higher than theGlobal Standards in Sphyraena jello.