Abstract. Sulfuric acid is a key contributor to new particle formation, though measurements of its gaseous concentrations are difficult make. Several parameterizations estimate sulfuric exist, all which were constructed using from the Northern Hemisphere. In this work, we report first Amazon basin. These consistent with measured in Hyytiälä, Finland, though, unlike there no clear correlation gl...

igh-efficiency entrainment removal devices have successfully met a H combination of challenges posed by the mist generated in the manufacture of sulfuric acid. Tightened regulations, increased sensitivity to the cost of downstream corrosion, and the desire to extend the life of mist eliminators have combined to prompt sulfuric acid manufacturers to seek improved emissions-control performance in...

a practical and green method for the synthesis of 5h-dibenzo[b,i]xanthene-tetraones and spiro[dibenzo[b,i]xanthene-13,3'-indoline]-pentaones by the condensation of 2-hydroxynaphthalene-1,4-dione with aldehydes or isatins, respectively, in the presence of a catalytic amount of cellulose sulfuric acid (csa) under solvent-free conditions at 100 °c is described. the significant features of this pro...

Sedimentation studies have been carried out to optimize the dispersion conditions of aqueous alumina nanopowder suspensions with or without dispersants (ammonium salt of polymethacrylic acid or rhamnolipids at 15%). Different dispersant dosages, solid loadings, pulp densities and pH values were examined. The iso-electric point (IEP) of the alumina nanopowder was found to be pHiep= 9.2. The expe...

sulfuric acid ([3-(3-silicapropyl)sulfanyl]propyl]ester (saspspe) is employed as a recyclable catalyst for the silylation of hydroxyl groups. a good range of primary, secondary alcohols and phenolic hydroxyl groups were effectively converted into their corresponding trimethylsilyl ethers with hexamethyldisilazane in the presence of catalytic amounts of saspspe at room temperature with short rea...

strong sulfuric acid solutions, and can be measured by a fluorometer.1) Gotelli et al.2) and Shihabi et al.3) have used high-performance liquid chromatography (HPLC) to separate fluorescent derivatives, and have measured cortisol levels in serum and urine. Since the sulfuric acid-induced fluorescence is unstable, it is necessary to inject the reaction mixture into HPLC immediately after the for...

introduction: sugarcane (saccharum officinarum) is widely cultivated in south west of iran for production of sugar. after harvest, a lot of sugarcane tops remain on the farm that can be used to feed ruminants. the total digestible nutrients (tdn) and crude fiber of sugarcane top is about 72% and 39%, respectively. the digestibility of dry matter (54%) and crude protein (39%) of sugarcane top is...