Thermal-optical evolved gas analysis (TOEGA) is a conventional method for classifying carbonaceous aerosols as organic carbon (OC) and elemental carbon (EC). Its main source of uncertainty arises from accounting for pyrolized OC (char), which has similar behavior to the EC originally present on the filter. Sample composition can also cause error, at least partly by complicating the charred carb...

groundwater quality has a direct impact on human life. the main objective of this research is to investigate changes in groundwater quality and levels in lake urmia basin. tasoj and shiramin plains are selected as a study area. the suitability of groundwater quality for drinking and agricultural purposes were assessed using schoeller and wilcox diagram. according to the wilcox classification, t...

This study was conducted to investigate the quality of groundwater affected due municipal solid waste (MSW) used as a landfill. To assess impacts, 13 samples were collected from dumping sites (SWDS) and safe (SS). Groundwater analyzed for pH, turbidity, electrical conductivity (EC), total hardness (TH), Cl?, Ca+2, K+1, NO?2, NO?3, SO4?2; heavy metals such Pb, Cr, Mn, Cu, Ni, Zn, Cd, Fe; biologi...

This research was conducted to examine the drinking (WQI1) and irrigation (WQI2) water quality for Bhavani river basin using statistical methodologies. The study area geographically covers up 4207 km2. For evaluating Water Quality Index (WQI), fourteen groundwater parameters were employed data gathered two decades (1972–1990 & 2010–2019). include TDS, pH, EC, TH, Ca2+, Mg2+, Na+, K+, CO3 2-...

Heparin was cleaved with nitrous acid at pH 1.5 and the products were reduced with Na+ boro[3H]hydride to generate a mixture of di- and tetrasaccharides having anhydro-D-[3H]mannitol (AManR) residues on their reducing terminals. The products were purified to homogeneity by gel filtration and high-performance liquid chromatography. For each oligosaccharide, the proportions of D-glucuronic acid (...

in iraq, waste generation was increased after 2003 war events due to intensepopulation developmentand economic growth. the limitation of designable system for municipal solidwaste (msw) management led toserious problems regarding environment and human health. sanitary landfill in the south of kirkuk is the first kindof effective system for municipal solid waste management in iraq. in the first ...