Sadat Feiznia; Rabbaneh Roughani; Saeed Soltani
Abstract
Particulate matters (PM) has a negative effect on human health especially in industrial and urban areas due to their great potential of reaching the furthest parts of human lungs. Therefore, it is essential to conduct continuous monitoring of PM in order to assess their spatial and temporal trend in ...
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Particulate matters (PM) has a negative effect on human health especially in industrial and urban areas due to their great potential of reaching the furthest parts of human lungs. Therefore, it is essential to conduct continuous monitoring of PM in order to assess their spatial and temporal trend in ambient air. This study aimed to assess the spatial and seasonal variations of PM2.5, PM10, total suspended particles (TSP) concentration and evaluating their correlations with meteorological parameters in surrounding regions of Isfahan city, Iran. PM2.5, PM10 and TSP concentrations (24-hours) were measured by gravimetry method with low volume air sampler for one-year period (July 2015-July 2016) at three stations located on western, eastern and southern part of Isfahan. The overall daily mean concentrations of PM2.5, PM10 and TSP were 73, 101 and 134 µg/m3 in east; 50, 86 and 103 µgr/m3 in the south; and 23, 45 and 53 µgr/m3 in west stations, respectively. This study identified that PM2.5 concentrations were above the US Environmental Protection Agency (EPA) guideline at all stations. The daily mean concentration of PM2.5, PM10, and TSP showed a negative correlation with humidity, while a positive correlation was observed between daily average temperature and all pollutant concentrations. A weak positive correlation was observed in case of wind speed. This study found that the meteorological condition has the highest impact on fluctuating PM2.5 concentration over the monitoring period. Pollution rose analysis indicated that westerly and north-westerly wind increased PM2.5 concentration at all sites.
Farshad Soleimani; Naser Brumand; ali azareh
Abstract
In recent decades, increasing population growth and development of agriculture have increased groundwater consumption and decreased the quality of groundwater resources of most parts of the country. Given the importance of this issue, present study investigates the spatial and temporal changes in parameters ...
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In recent decades, increasing population growth and development of agriculture have increased groundwater consumption and decreased the quality of groundwater resources of most parts of the country. Given the importance of this issue, present study investigates the spatial and temporal changes in parameters of calcium, magnesium, pH, chloride, sodium sulfate and water in Jiroft plain. The data was obtained from 40 wells in the region of Kerman province over which in 2002-2012 water harvesting and qualitative analysis had been done. In this regard, after normalizing the data, the accuracy of different geo-statistical methods including the Kriging and inverse distance weighted were evaluated and then the map of the spatial zoning was prepared in the software quality parameters ArcGIS9.3 using the best method of interpolation. The results showed that the amount of pH, Sodium, Chlorine, and Sulfate increased but the amount of calcium and magnesium declined. But in general, in 2012the quality of groundwater resources of Jiroft plain decreased compared to 2002 and the trend of changes showed water quality reduces toward the South and West.
