International Journal of Trend in Scientific Research and Development

A selection of one common and commercially available table top artificial Sweetener in Sudanese Markets Steviana was considered. The study showed that , the compositions of the sample steviana contained sorbitol as a natural low potency sweetener, and it doesn't contain Aspartame , Saccharin as an artificial high potency sweeteners which they are chemical additives and have hazardous on health . Raman peaks of these compositions were compared with previous studies and analysis, which they were identical with the obtained results. The samples were examined in powder and solvent forms. These samples were irradiated using 6mW Nd YAG laser with 532 nm ModelHoribaLabRAM HR 3D at room temperature. These spectra provided free Raman fluorescence signatures in identifying the most significant peaks of these sweeteners. The results confirms and indicating excellent potentials of Raman spectroscopy for the assessment of Artificial sweeteners quality. 

Water pollution is a complex problem for people in Sudan, especially in the northern state. Human activities such as Gold exploration, use of fertilizers in agriculture and industrial activities are, more or less directly, responsible for increasing pollution in running waters. This study aims to detecting the contaminants present in surface water in Northern Sudan. Five samples of water lines from different drinking water treatment plant were collected. the samples were analyzed by Horiba Lab RAM 3D Raman spectrometer. The results showed that the samples beside the water contain toxic and dangerous substances that may lead to dangerous diseases, in different quantities, such as cyanide, nitrate, Uranium oxide and phenol. 

This research investigates Raman spectroscopy as a quick and reliable method to quantify the alpha a and gamma polymorphic forms of indomethacin compared to differential scanning calorimetry DSC . Binary mixtures with different ratios of a and indomethacin were prepared and analyzed by Raman and DSC.  

The Raman method was found to be more reliable and superior compared to DSC. The partial conversion of the alpha to gamma polymorphic form during the DSC measurement was the major limitation for the use of full DSC as a quantitative method and resulted in difference between the calculated and measured enthalpy of both polymorphic forms. 

by T. B. Sundaresan "Solid-State Mixture Identification of Crystal Indomethacin by Spectroscopy Comparison with Thermal Analysis" 

Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-6 , October 2018,