CHAPTER ONE 1.0 INTRODUCTION Bioactive plants are commonly used by traditional healers or in folklore medicines for the relief of pain or some alignments. This act of medication has made some plant families popular (Heinrich 2000; Kuete et al ., 2006).The acceptance of traditional medicine as an alternative form of health care has assisted… Continue Reading
Development of improved methods for the synthesis of copper nanoparticles is of high priority for the advancement of material science and technology. Herein, starch-protected zero-valent copper (Cu) nanoparticles have been successfully synthesized by a novel facile route. The method is based on the chemical reduction in aqueous copper… Continue Reading
The determination of some selected organochlorine pesticide residues in some vegetables grown within Gwagwalada Area Council were carried out using Gas Chromatography-Mass Spectrometric Technique (GC/MS). Lindane, Dieldrin, Endosulfan and Heptachlor were determined in Telfairia occidentalis, Amaranthus hybridus and Talinum triangulare… Continue Reading
Five different filling stations (Station A, Station B, Station C, Station D and Station E) were analyzed for Total Petroleum Hydrocarbons and heavy metals concentration using Gas chromatography–mass spectrometry and atomic absorption spectrophotometer respectively. The result of the analysis obtained indicated that the percentage range… Continue Reading
In this study, a series of N-pyridin-3-yl substituted [phenylsulphonamido] acetamide has been synthesized. The reaction of phenylsulphonyl chloride with various amino acids in basic medium yielded phenylsulphonamido alkanoic acid which, on chlorination with thionyl chloride, gave acid chloride derivatives of phenylsulphonamido alkanoic… Continue Reading
The rate of reaction defines as the concentration of reactant or product, consumed or produced within a given time frame. Changing one of the variables could lead to a differing rates of reaction speeds. … Continue Reading
This manuscript contains an insight into the mechanisms of inorganic carbene chemistry; synthesis of imidazolium salts from its precursors to using computational chemistry to calculate their quantum mechanical properties. As well as an attempt to deprotonate the iPr imidazolium salt and coordinating the carbene to a standard but labile Ni(0)… Continue Reading
Structure of thesis The results from the thesis have been presented in chapters based on various experiments conducted. These chapters are intended as manuscripts for submission to international peer reviewed journals. Chapter 1 gives a general background to the thesis and presents pertinent literature on the topics understudy. While literature… Continue Reading
The concentrations of some trace metals (zinc, iron, copper, cadmium and lead) in 51 canned foods (fish, vegetable and fruit juice) samples purchased within Abuja Municipal Area Council (Nigeria) were determined using the flame atomic absorption spectrophotometry (FAAS). The wet oxidation procedure of HN03-H20 2 was used in the… Continue Reading
The Cu, Pb, Zn and Mn content of ten chocolates and candies purchased from Abuja municipal aiea council were determined by Atomic Absorption Spectrometry (AAS). The HN03 digestion method was evaluated by the analysis of the ten replicates of the candies and chocolate which gave a precision of 2%, 3%, 17% and 2% for Cu, Mn, Ni and Zn… Continue Reading
Complexes of Malonyl and Succinyl Dihydrazides with Copper(Ii) And Uranyl(Vl) Nitrafes and uranyl acclate U02(CII/'00)2, copper nitrate Cu (N01h and copper acetate (Cl I1C00)( 'u have lx:en synthesized using I: I metal to ligand reactant ratio. The complexes have been characterised;.ed li·mn elemental analysis, conductivity… Continue Reading
Chelates of 2-bromovaleric acid hydrazide (BVH) and acetone2- bromovaleric acid hydrazone (ABVH) with MS04 (where M is Ni, Cu, Co, Mn, Zn, V02+) were synthesized in water-methanol medium. They were characterized by infrared and electronic spectral studies, solubility, elemental analysis, conductivity and antimicrobial screemng. Electronic… Continue Reading
A biofuel is a fuel that produced through contemporary biological processes such as agriculture and anaerobic digestion, rather than a fuel produced by geological processes. It can be derived directly from plants or indirectly from agriculture or industrial waste. Bioethanol is an alcohol made by fermentation, it is produced from sugar or… Continue Reading
Phytochemical screening of methanol extract of leaves of Albizia Amara revealed the presence of secondary metabolites: saponins, alkaloids, tannins, glycosides and flavonoids. Powdered shade- dried leaves (1kg) of A. amara. were extracted with 95% ethanol at room temperature for 48 hours, The crude extract was suspended in water and… Continue Reading
This study was aimed to extract the fixed oil of Apium graveolens through the process of maceration with normal hexane. The oil was analyzed by gas chromatography-mass spectrometry. The antimicrobial activity was also estimated. The GC-MS analysis of the studied oil showed the presence of 45 constituents. Major components are: i)… Continue Reading
Assessment of the effects of carbonated drinks on the teeth have been carried out. Five white shelled hard-boiled eggs were placed in clear cups and labelled ( Soda Drink, Diet Coke, Coke, Tap Water and Vinegar) , with the respective selected liquid poured into the cups and ensured the liquid covers the eggs placed in the cups. The eggs… Continue Reading
3,5-Bis[(2-hydroxy-benzylidene)-amino]-benzoic acid (H2B) and its cobalt(II) and nickel(II) complexes were synthesized and characterized via: electronic, IR, 1 H NMR and 13C NMR. Job’s continuous variation method was used to determine the mole ratio for both metal complexes. Solvent extraction studies were carried out on H2B in 5% DMF… Continue Reading
In this study, a series of N-pyridin-3-yl substituted [phenylsulphonamido] acetamide has been synthesized. The reaction of phenylsulphonyl chloride with various amino acids in basic medium yielded phenylsulphonamido alkanoic acid which, on chlorination with thionyl chloride, gave acid chloride derivatives of phenylsulphonamido alkanoic… Continue Reading
Thaumatococcus daniellii and Musa accuminata are leaves used for wrapping foods and these herbs have some medicinal value. The affordability, preservation, usage techniques, and seasonal scarcity of the leaves make it difficult for people to use them frequently but they are preferred over plastic bags and aluminum foil in terms of… Continue Reading
Thaumatococcus daniellii and Musa acuminate are leaves used for wrapping foods and these herbs have some medicinal value. The affordability, preservation, usage techniques, and seasonal scarcity of the leaves make it difficult for people to use them frequently but they are preferred over plastic bags and aluminum foil in terms of wrapping… Continue Reading
Weight loss and Density Functional Theory (DFT) methods were used to study the corrosion inhibition of 5-methyl-2H-imidazol-4-carboxaldehyde and 1H-Indole-3-carboxaldehyde on mild steel in acid medium. The values of thermodynamic parameters such as free energy of adsorption (ΔGºads), adsorption equilibrium constant (Kads), adsorption… Continue Reading
The efficiency of acid modified locust bean pod (ALBP) as low cost adsorbent to remove Rhodamine-B (Rh-B) dye from aqueous solution was studied. The morphology, functional groups and elemental analysis of the adsorbent were investigated by SEM, FTIR, pH (pzc), and Boehm titration analytical techniques. Operational parameters such as… Continue Reading
Metal complexes are scientifically known to be active and effective as antibacterial, antivirus and some antifungal etc. This project work is targeted at preparing complex from transition metals say; cobalt, cupper, zinc and nickel and organic ligands synthesised from pyridyl based schiff bases, one from 2-aminopyridine and benzaldehyde and second… Continue Reading
Poultry eggs are eaten in most areas of the world with fewer social taboos associated with them than pigs and cattle. The most commonly used bird eggs are those from chicken. In Nigeria, the domestic foul dominates the poultry industry. Of the 120 million indigenous poultry population in Nigeria, the domestic fowl constitutes about 91 %… Continue Reading
The aim of this research was to characterize some Portland cements (Bua, Dangote and Sokoto cement) sold in Sokoto city using standard methods; due to the persistent collapse of buildings. The results showed that Sokoto cement recorded the least CaO content (58.99%) while Dangote cement had the highest CaO content being 61.56%. All the… Continue Reading