Abstract Waste waters from eight selected industries namely Tema Oil Refinery, Tuyee Manufacturing Industries, Cocoa Processing Company, Tema Lube Oil Company Limited, Pioneer Food Cannery Limited, Bridaltrust Paints Company Limited, Ghana Textiles Manufacturing Company and Ghana Textiles Printing Company Limited were sampled and subjected to various physico-chemical and trace metal analysis to determine levels of pollutants, using standard methods of WHO, AO AC and APHA. Generally, the ROD v...
ABSTRACT Lanthanide complexes have been established as promising agents in their application as catalysts and photo-luminescent materials. Recent research has been geared towards the optical application of these lanthanide complexes, especially as organic light-emitting diodes (OLED) for TV screens, phones and other portable electronic devices. The luminescent ability of these complexes is largely dependent on the choice of ligand environment. We report here for the first time lanthanide comp...
ABSTRACT The study was in two parts. The first part dealt with the determination o f water quality parameters such as pH, temperature, DO, BOD, COD, conductivity, turbidity, suspended solids, dissolved solids and total solids. Others are nutrients and ions such as nitrates, nitrites, phosphates, chlorides, calcium, magnesium, sodium and potassium. The rest were under hardness o f water such as calcium, magnesium and total hardness. Of all these parameters, only the values for turbidity i.e 80...
ABSTRACT The study was in two parts. The first part dealt with the determination o f water quality parameters such as pH, temperature, DO, BOD, COD, conductivity, turbidity, suspended solids, dissolved solids and total solids. Others are nutrients and ions such as nitrates, nitrites, phosphates, chlorides, calcium, magnesium, sodium and potassium. The rest were under hardness o f water such as calcium, magnesium and total hardness. O f all these parameters, only the values for turbidity i.e 8...
ABSTRACT Soft drinks are consumed daily in Ghana on social occasions and for recreation. Generally, it is affordable and consumed widely across all age groups particularly due to their thirst quenching potential. These drinks are also important sources of nutrition as well as trace metal contamination. Thus, the study monitored for 4 months the nutritional content and trace metal contamination of forty-two different brands of new day soft drinks (totaling 672 samples), sampled from some mar...
ABSTRACT Samples of oils and fats of different degree of unsaturation namely; shea butter, palm oil and groundnut oil were heated at three different temperatures (150°C, 110°c and 190°C) for 2, 4, 6, 8 and 1 Ohrs using a temperature regulated, lidded-deep frying equipment. The changes in some chemical properties were monitored. These chemical properties include acid value, iodine value, saponification value, peroxide value and volatile content. The total phosphorus contents were also monit...
ABSTRACT This project is concerned with the development and evaluation of an atom-trapping technique for determination of heavy metals in environmental samples. Modified atom-trapping technique using fabricated nickel tube/sample holder (crucible) was employed to increase the sensitivity of a flame atomic absorption spectrometry. Basic performance data for different parameters, such as burner height and the height of the support, were studied. Different designs and ways of placing the atom tr...
ABSTRACT Complexes of 4 - Cyanobenzaldehydecylohexyl acetic acid hydrazone ( 4-CBAH) with M(II) sulphates and acetates have been synthesized (M=Ni, Cu, Co and Zn). The complexes were characterized by elemental analyses, conductance, infrared and electronic spectral studies . . The sulphate ions are in the outer coordination sphere, so also the acetate 10ns. The electronic spectral studies of the isolated complexes indicate an octahedral coordination for Ni2+ and Co2+ complexes while Cu2 + com...
ABSTRACT Nine pesticide residues were detected in soil and water samples from the Waanpu Dam in the Bimbilla District of Ghana at varying mean concentrations using Gas Chromatography. The pesticide residues detected in the soil and water samples were chlorpyrifos, beta-endosulfan, cypermethrin, aldrin, heptachlor, beta-BHC, heptachlor-epoxide, dieldrin, and methoxychlor. The concentration of beta-endosulfan was the highest among all the pesticides detected. It ranged from 0.001 – 0.070 µg...
ABSTRACT Valerohydroxamic and Isovalerohydroxamic acids were synthesised and recrystallised from ethylacetate. They were characterised by melting point, pka and spectral (IR NMR) studies. Their melting points are 77.78°C and 76.77°C for valerohydroxamic acid and isovalerohydroxamic acid respectively and their pka values at 0.1mol dm-3 at 28°C are 9.50+0.01 and 9.51+0.01 for valerohydroxamic acid and isovalerohydroxamic acid respectively. The IR and NMR (1H and 13C) for both valerohydroxami...
ABSTRACT Complexes of Aluminium with some model bioligands, were prepared and characterized by elemental analysis, melting point, conductivity, solubility and infra-red spectroscopic studies. The complexes are soluble in water and some organic solvents such as chloroform, ethanol and methanol. The melting point ranges from 258°C - 282°C for complexes with Al Cl3, and 8Ql C - 95 C, for complexes with AlNH4(S04) 2 .12H2 0. Conductivity studies reveals that the prepared · complexes are non-el...
ABSTRACT The use of plastics such as polyethylene in the food industry in Ghana as opposed to traditional forms of packaging such as the use of leaves and paper is constantly growing with different designs and compositions. These plastics contain chemicals that are added during the manufacturing process. These chemicals, such as plasticizers, are used to make the plastics flexible but are not covalently bonded to the polymer, hence are able to migrate from the food packages into food when hea...
ABSTRACT The ethanolic extract (crude extract) was successively extracted with nhexane, chloroform, water, 103 aqueous methanol and n_hexane to give the corresponding fractions. The crude exfract, 103 "aqueous methanol, vvater soluble and n-hexane fractions of the root of .c_.africana, were screened for antimicrobial activity and chemical constituents. The n-hexane fraction was chromatographed on a column of silica gel to give a number of fairly pure components. The infrared spectra of the co...
Abstract The corrosion inhibition of aluminium and mild steel in H2SO4 in the presence of Bromothymol blue, BTB, Dimethyl yellow, DMY, Methyl orange, MO, Titanium (IV) oxide, TO and Cassia Siamea Lam, CSL leaves extract at 303 – 313K was studied using “Absorbance difference” technique. The results showed that inhibition efficiency (%IE) increased with increase in inhibitor concentration (except for BTB, where beyond a “critical” concentration of 0.0007M, it reversed its function and...
ABSTRACT The levels of Cd, Cu, Ni, Pb and Zn in soils of municipal solid waste and ground water within the Abuja municipality was determined. The flame atomic absorption spectrophotometry was used to determine the metals. The aqua reqia extraction method was used to extract metals from the soils. The average concentration of metals in the soil samples were Cd = 4.3 J..Lgg-1 dry weight (2.4-5.9 J..Lgg-1 dry weight), Cu = 12.4 J.!gg-1 dry weight (3.4 - 19.9 J.!gg-1 dry weight) Ni = 8.3J..Lgg-1...