Absorption spectroscopy

Objective The purpose of the experiment is to synthesize multiple cobalt complexes with various ligands and explain the ligand field transitions of these complexes using Ultraviolet-Visible (UV-Vis) spectroscopy. The experiment provides insight into specific colors of certain molecular species and respective bonding information. Introduction Transition elements are defined by the IUPAC as atoms that have an incomplete d-subshell, most commonly referring to the d-block.1 When transition metals…

The Chemistry of Baking If there is one thing in the world that brings people together, it is food. No matter who a person may be, or what their background is, everyone can enjoy an excellently crafted dish. In particular, many people enjoy selections of pastries, sweets, and bread. There are hundreds to thousands of crafted desserts and bread around the world. When a person first bites into a macaroon, slice of asiago bread, or a perfectly-shaped chocolate chip cookie, they might not consider…

Extraction of alkali from banana peels is known to depend on such parameters as ashing temperature, ashing time, soaking time and particle size of the ashed sample, soil type and variety. Alkali was extracted from three Nigerian grown banana peels namely: Saaro, Oloosun and Paranta for the purpose of determining the concentration of the extracted alkali. The concentration of the extracted alkali ranged from 0.02 to 0.10mol/dm3. The three varieties of the banana peels gave a maximum concentration…

Kalyani et al (2009) studied an isolated strain of Pseudomonas sp. SUK1 from the waste disposal sites of local textile industries in India, with the objective of evaluate an ecofriendly textile dyes biodegradation. To isolate the microorganism, they first collected a soil sample from the waste disposal site and inoculated the sample in a nutrient medium with a dye. Then they incubated and plated in agar with dye. The colonies that had a halo of decolorization were selected to be submitted to…

allows for relatively easy modification of the polymer, in either grafting or cross-linking reactions [1, 7]. Grafting reactions involve the addition of a functional group, usually resulting in the increased adsorption capacity due to increased absorption sites [7]. Cross-linking reactions bind neighbouring chains together, causing a decreased number of adsorption sites due to increased binding between chains [7]. Cross-linking provides greater stability for the polymer, and is often…

Below I am discussing, at length why I believe I should receive the Research Plus Award, addressing each point of the Researcher Excellence Framework, giving evidence how the past two and a half years have contributed to my personal and my career development. 1. Knowledge and Intellectual abilities a. Knowledge base Throughout my PhD I have been able to attend a number of courses organised by the QUB postgraduate centre, which allowed me to further my knowledge and gain valuable skills within my…

Pollution is one of the most serious problems that affect our environment, and its effects on all life aspects are clear to everyone. Because of this, pollution is one of the most serious issues that all the word countries are concerned about. As time goes, the pollution problem increases and also the population growth increase. The increase in demand for water and food supplies place an increasing stress on the ground and surface water quality and quantity. One of the environmental problems…

Water Quality Water is essential to human life and the health of the environment. Good water quality is essential for irrigation, drinking and recreation and also sustains ecological processes that support native fish populations, vegetation and bird life. We expect that our water supply will not only be safe, but will taste good, and look crystal clear. Water quality is commonly defined by its physical, chemical, biological and aesthetic (appearance and smell) characteristics. Water quality…

Abstract. In this work investigation for the effect of compressed CO2 on the morphology of the produced Polyaniline (PANI) was carried out. The conventional oxidative polymerization using ammonium peroxydisulfate as oxidizing agent was used with and without compressed CO2. The results showed that different morphologies of PANI nanorods and PANI nanoparticles were produced using the conventional polymerization with and without compressed CO2 respectively. Molecular characterization of the…

Asthma and chronic obstructive pulmonary disease (COPD) are among the most common and prevalent diseases in the world (Raadhika and Shanthi, 2012; Rao and Kulkarni , 2012). Salbutamol sulphate (SS) is a short-acting β2-adrenergic receptor agonist used for the relief of bronchospasm (Sharma et al., 2015). Salbutamol sulphate is readily absorbed from the gastro intestinal tract following oral administration, and it undergoes the first pass metabolism in the liver. It requires multiple dosing a day…