International Research Journal of Pure and Applied Chemistry <p style="text-align: justify;"><strong>International Research Journal of Pure and Applied Chemistry (ISSN: 2231-3443)</strong> aims to publish original research articles, review articles and short communications in all aspects&nbsp; of pure and applied chemistry including analytical chemistry, biochemistry, medicinal chemistry, molecular biology and genetics, inorganic chemistry, organometallic chemistry, materials chemistry, chemistry of solids, liquids, polymers and interfaces between different phases, neurochemistry, nuclear chemistry, modern transmutation, organic chemistry, physical chemistry, phytochemistry, polymer chemistry, supramolecular and macromolecular chemistry, chemical thermodynamics, chemical kinetics, electrochemistry, statistical mechanics, spectroscopy, astrochemistry and cosmochemistry, quantum chemistry and theoretical chemistry, sonochemistry, agrochemistry, atmospheric chemistry, chemical engineering, chemical biology, chemo-informatics, electrochemistry, femtochemistry, geochemistry, green chemistry, histochemistry, immunochemistry, marine chemistry,&nbsp; mechanochemistry, nanotechnology, natural product chemistry, oenology, petrochemistry, pharmacology, photochemistry, radiochemistry, synthetic chemistry, kinetics and mechanisms of chemical reactions, thermochemistry, chemistry in industry and interactions between chemistry and environment.&nbsp;This is a quality controlled, peer-reviewed, open access INTERNATIONAL journal.</p> en-US (International Research Journal of Pure and Applied Chemistry) (International Research Journal of Pure and Applied Chemistry) Mon, 09 Sep 2019 12:31:02 +0000 OJS 60 Chemical Analysis of Itobe Limestone Deposit for Potential in Cement Manufacturing <p>In this research, the assessment of the chemical composition of the Itobe marble deposit for comparison with the general limestone requirements for cement making was investigated.&nbsp; Six pits were dug and carefully studied in the area. The research work is aimed at determining the suitability of the Itobe marble deposit in the manufacturing of cement, establish the nature, size and type of the deposit and to estimate the various impurities present and at what concentrations. The soil samples collected were analysed for their chemical properties. Samples were also obtained from river channels and from outcrops of the deposits. The result showed that an appreciable amount of the marble deposit, with CaO in the range of 32.95% to 50.05% and Silica ranging from 1.40% to 7.20%. From these chemical analyses, Itobe limestone showed a great potential in cement production to augment cement availability for building and civil engineering construction in Nigeria.</p> Temitope Emmanuel-Alonge, Dorcas Joseph, Emily Dada, Jamil Baba, Abere Victor, Florence Dennis Uzuh ##submission.copyrightStatement## Mon, 09 Sep 2019 00:00:00 +0000 Consequence of Groundwater Irrigation on Physico-chemical Properties of Soils of Kanholibara Village in Nagpur District, Maharashtra, India <p>A field experiment entitled “Effect of Groundwater irrigation on various soil properties of Kanholi-Bara in Nagpur District Was conducted&nbsp;during Kharif season of 2015-2016 at Kanholi-Bara of Hingana tahsil in Nagpur District Maharashtra, India. The soil samples were collected from that area comprises two source of irrigations <em>viz</em> well water and bore well water and soybean crop which were taken in these fields. The mean value of pH 7.79 was recorded with ground water irrigation and EC in groundwater irrigated soil 0.81 dS m<sup>-1</sup>.The organic carbon contains in ground water irrigated soil with high Sodium Absorption Ratio (SAR) and Residual Sodium Carbonate (RSC) was lower by 35.19 per cent less than mean value of organic carbon. The lowest available nitrogen, phosphorus and potassium status were 185.44, 15.65 and 178.80 kg ha<sup>-1</sup> respectively were obtained with the application of ground water of high RSC and SAR. Whereas the highest accumulation of heavy metal in soil 1.16 mg kg<sup>-1</sup> lead, 1.30 mg kg<sup>-1</sup> Cobalt, 1.19 mg Kg<sup>-1</sup>Nikel and 0.037 mg kg<sup>-1 </sup>Cadmium were present in soil with the application of high SAR and RSC irrigation water. Due to continuous and injudicious irrigation with poor quality groundwater adversely affect the physical and chemical properties of soil.</p> Sagar N. Ingle, V. P. Babhulkar, Shubham B. Girdekar, S. K. Sarkate ##submission.copyrightStatement## Thu, 12 Sep 2019 00:00:00 +0000 Appraisal of Macro and Micronutrient Status of Soils of Washim Road Farm of Dr. PDKV Akola, Maharashtra, Using GPS <p>The present study was conducted during the year 2018 and 2019 at Department of Soil Science and Agricultural Chemistry, Dr Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra with an aim to know the macro and micronutrient status of soils of Washim road farm, Dr. PDKV Akola. Grid based (GPS) forty four (44) surface (0-20 cm depth) soil samples were collected by grid survey method at 200 m distance from Washim road farm and analyzed as per standard procedure for judging chemical properties and available nutrient status of soil. The results indicate that all the soils pH under study were slightly alkaline to moderately alkaline in reaction and it ranged from 7.5 to 8.6 and soils were free from soluble salt hazard (EC 0.13 to 0.38 dSm<sup>-1</sup>). Organic carbon content were ranged from 2.34-8.97 g kg<sup>-1</sup>, soils of Washim road farm was moderately calcareous to calcareous due to presence of CaCO<sub>3</sub> in soil. The available major nutrient content in these soils showed very low status for N (100.35-175.61 kg ha<sup>-1</sup>), available P (13.25-22.4 kg ha<sup>-1</sup>), and very high for available K (340.14-539.04 kg ha<sup>-1</sup>). While the available S, it ranges from 7.58-16.4 mg kg<sup>-1</sup>. The available micronutrient content in these soils showed very low to moderate status for available Fe (2.05-5.96 mg kg<sup>-1</sup> ), available Mn (0.82-4.47 mg kg<sup>-1</sup>) and available Zn (0.12-0.88 mg kg<sup>-1</sup>) indicates very low to medium and high for available Cu (0.73-3.12 mg kg<sup>-1</sup>).</p> Vijay A. Dhotare, V. D. Guldekar, Sagar N. Ingle, S. M. Bhoyar ##submission.copyrightStatement## Mon, 16 Sep 2019 00:00:00 +0000 Properties of Gypsum Boards Made of Mixtures of Wood and Rice Straw <p><strong>Aims: </strong>It was investigated to produce gypsum-based experimental composite panels with red pine wood/rice straw particles in the mixture up to 60:40 (ratio) (w/w) in gypsum-water mixture. In this case, the additives could be observed more closely.</p> <p><strong>Methodology:</strong> The red pine wood chips and the rice straw (stalks) have been turned into suitable particle dimensions. The experimental boards were cut to determine the IB (Internal bond), MOE–MOR (Modulus of Elasticity and Rupture), and TS (thickness swelling after 24 hours immersion in water). A standard flame combustion test system was conducted according to TS EN-ISO 11925-2. For surface chemical analyses, FTIR was used to evaluate the chemical groups present in the board surface. The thermogravimetric analysis (TGA) was conducted for measuring changes in boards as a function of increasing temperature.&nbsp; The natural weathering tests were conducted that were exposed to outdoor for two months then color and surface hardness measurements conducted for determining property changes.</p> <p><strong>Results:</strong> The rice straw had negative impact on thickness swelling (TS) properties of boards in water. The highest TS value of 47.66% was observed in the board that produced from 60:40 (ratio) (w/w) wood/rice straw mixture (DE4). However, the addition of rice straw to the wood/gypsum mixture has a lowering effect on the internal bond (IB) and bending strength (MOR) properties of experimental boards some level.&nbsp; The maximum IB strength of 0.06 N/mm<sup>2 </sup>and MOR of 2.77 N/mm<sup>2 </sup>found control sample (DE0). However, the highest MOE value of 553 N/mm<sup>2</sup> was calculated on the DE4 board, which was produced by adding 40% rice straw to the wood/gypsum mixture. The addition of rice straw and wood particles to the gypsum structure has a positive effect on the heat transfer properties.</p> <p><strong>Conclusion:</strong> It is clear that the addition of rice straw to the wood/gypsum mixture adversely affected the strength properties negatively. However, rice straw in wood chip/gypsum mixture helps to improve heat resistance (insulation) properties of panels at some level. Moreover, the addition of rice straw to wood/gypsum mixture effects on extending hardening time.</p> Halil Turgut Sahin, İlkhan Demir, Ömer Ümit Yalçın ##submission.copyrightStatement## Tue, 17 Sep 2019 00:00:00 +0000