Chemical Science International Journal http://journalcsij.com/index.php/CSIJ <p style="text-align: justify;"><strong>Chemical Science International Journal&nbsp;(ISSN:&nbsp;2456-706X)&nbsp;</strong>aims to publish&nbsp;high quality papers (<a href="/index.php/CSIJ/general-guideline-for-authors">Click here for Types of paper</a>)&nbsp;in all aspects of chemical science. The journal also encourages the submission of useful reports of negative results. This is a quality controlled,&nbsp;OPEN&nbsp;peer reviewed, open access INTERNATIONAL journal.</p> en-US contact@journalcsij.com (Chemical Science International Journal) contact@journalcsij.com (Chemical Science International Journal) Fri, 20 Mar 2020 10:32:29 +0000 OJS 3.1.1.4 http://blogs.law.harvard.edu/tech/rss 60 Electrochemical Impedance Spectroscopy (EIS) Study of a Dye Extract http://journalcsij.com/index.php/CSIJ/article/view/30165 <p>Grätzel cells mimic the process of plant photosynthesis, and these new dye-sensitized cells take the imitation even closer, the new chemical combination gives them a greenish tint. Pt/TiO<sub>2</sub>/Dye modified electrode shows two pair of oxidation peaks at 256 and 474 mV which is ascribed to Fe<sup>3+</sup>/Fe<sup>2+</sup> and a reduction peak of 210 mV which is ascribed to TiO<sub>2</sub>/Dye. The internal resistance of the DSSC shows the dye can be strongly adsorbed to the surface of TiO<sub>2</sub>, therefore Pt/TiO<sub>2</sub>/Dye electrode transfers electron with very minimal resistance making the dye a good sensitizer material for DSSCs. The high voltage is as a result of the impregnation of the dye on the TiO<sub>2</sub>. An investigation into the internal resistance of the DSSC shows the dye can be strongly adsorbed to the surface of TiO<sub>2</sub>, therefore Pt/TiO<sub>2</sub>/Dye electrode transfers electron with very minimal resistance making the dye a good sensitizer material for DSSCs.</p> Bala Adamu Thliza, Edmond Moses, Buba Usman Shanu ##submission.copyrightStatement## http://journalcsij.com/index.php/CSIJ/article/view/30165 Fri, 20 Mar 2020 00:00:00 +0000 Quantification and Speciation of Lead, Cadmium and Chromium in Dandora Dumpsite Soils http://journalcsij.com/index.php/CSIJ/article/view/30166 <p>Open dumpsites are one of the main sources of heavy metals and as a result, lots of research has been undertaken on the pseudo-total content of heavy metals in dumpsite soils, but little research on the forms in which they exist. The current research was carried out to determine levels of chromium, lead and cadmium in the various fractions of Dandora dumpsite soil and how they are fractionated in the topsoil and subsoil horizons. Samples were obtained from eight sites with depths of (0-30 cm) and (30-60 cm) for topsoil and bottom soils respectively. The modified Community Bureau of Reference (BCR) sequential extraction procedure was used and metal analysis performed using flame atomic absorption spectrophotometry. The metals (lead, chromium and cadmium) total concentration (µg/g) in the upper soil profile ranged from 42.22 to 1096.21, 38.26 to 180.60 and 11.23 to 44.22 while the lower soil profiles were 54.19 to 239.28, 30.56 to 76.48 and 9.47 to 22.56, respectively. The concentration of lead in various fractions of the upper soil profile followed the order; reducible &gt; oxidisable &gt; residual &gt; exchangeable, while that of chromium was residual &gt; oxidisable &gt; reducible &gt; exchangeable. Cadmium followed the order exchangeable &gt; residual &gt; reducible &gt; oxidisable. The percentage of the metals in non-residual fraction were Pb (78%), Cr (58.7%) and Cd (70%). Their mobility factors were (Pb) 39.7 (Cr) 7.75 and (Cd) 5.02 in the upper soil profiles. Thus, the results suggest that Dandora dumpsite is highly polluted with the selected heavy metals.</p> P. M. Kahara, J. Murungi, J. K. Kiptoo, G. Nyaga ##submission.copyrightStatement## http://journalcsij.com/index.php/CSIJ/article/view/30166 Mon, 30 Mar 2020 00:00:00 +0000 Microbiological and Physicochemical Research of Mountain Spring Waters in Vasiliovska Mountain, Municipality of Teteven, Bulgaria http://journalcsij.com/index.php/CSIJ/article/view/30167 <p>Defined are the physicochemical properties of three mountain spring waters in the area of Vasiliovska mountain, Municipality of Teteven, Bulgaria. Vasiliovska mountain is in the central part of Stara Planina (Balkan) mountain.</p> <p>The methodology is including research of physicochemical parameters and microbiological indicators. It is needed the whole parameters to corresponds to Ordinance № 9 / 2001, Official State Gazette, issue 30, and decree № 178 / 23.07.2004 about the quality of water, intended for drinking purposes in Bulgaria, European Union [1,2,3].</p> <p>The spring waters from the given three water sources are characterized by microbiological indicators, and the pathogenic micro-organisms in the samples from the springs water sources mentioned above are determined by the membrane method [4,5].</p> <p>It is shown that according to 18 controlled parameters included in the study, the following springs in Vasiliovska mountain - “Babintsi” with water temperature 12.3°C, “Gechovoto” with water temperature 13.5°C, “Ignatov izvor” with water temperature 14.1°C, correspond to all controlled parameters according to Ordinance № 9 / 2001, Official State Gazette, issue 30, and decree № 178 / 23.07.2004 about the quality of water, intended for drinking purposes.</p> Ignat Ignatov, Nedyalka Valcheva ##submission.copyrightStatement## http://journalcsij.com/index.php/CSIJ/article/view/30167 Fri, 03 Apr 2020 00:00:00 +0000 Physico-chemical Characteristics of Ground Water Quality in District Satna (M.P.) http://journalcsij.com/index.php/CSIJ/article/view/30168 <p>The problem of ground water pollution in several parts of the country has become so acute that unless urgent steps for detailed identification and abatement are taken, extensive ground water resources may be damaged. The quality of ground water depends on a large number of individual hydrological, physical, chemical and biological factors. Generally higher proportions of dissolved constituents are found in ground water than in surface water because of greater interaction of ground water with various materials in geologic strata. The work done on ground water of Satna District covering various inorganic non metallic constituents covered are pH, TS, TDS, TSS, TH, DO, BOD, COD, Alkinity, Conductivity.</p> Asheesh Kumar, Sachin Bhatt ##submission.copyrightStatement## http://journalcsij.com/index.php/CSIJ/article/view/30168 Sat, 04 Apr 2020 00:00:00 +0000