Chemistry Research Papers/Topics

Studies Of Trace Metal Levels In Fish, Sediment And Water From Kpong Reservoir

ABSTRACT Water of good quality is indispensable to human survival on earth. The provision of potable water to both the rural and the urban populations is necessary to prevent health hazards. The aim of this research was to assess water quality with respect to physicochemical parameters and trace metals levels in the water, the sediment and the fish species from the Kpong Reservoir on the Lower Volta River. The water, the sediment and the fish samples were collected monthly for six (6) months ...

Isolation and Characterization of starch from Parkia biglobosa (jacq.)Benth. (Fabaceae_Mimosoideae) (African locust bean)

ABSTRACT The isolation and characterization of starch from Parkia biglobosa Oacq.)Benth. (African locust bean), was investigated. The starch was extracted by a pre- isolation bleaching using KOH (5%) and sodium hypochlorite (3 .5% ); followed by steeping, wet milling and centrifugation. The starch obtained was dried in an oven at 60°C. The thermal properties were obtained by Differential Scanning Calorimetry (DSC). The work showed that Parkia starch has a pH of 5.6,density (true) 2.3lg/ml, ...

Isolation And Characterization of Bioactive Ingredients From The Root of CISSAMPELOS OWARIENSIS

ABSTRACT  The investigations of Cissampe/os owariensis have largely been driven by the desire to find new drugs or new drug leads. The studies were carried out to confirm the traditional medicinal uses of the plant C. owariensis, and to identify the chemical constituents responsible for the activity. The ethnomedicinal uses of the plant include whooping cough, wound, irregular menstrual cycle, typhoid and malaria fevers. Phytochemical screening of the roots extracts revealed the presence of...

Impact of Mining and Agriculture on Metal Concentrations in Soil and Food Crops in Selected Local Government Areas of Nasarawa State, Nigeria

ABSTRACT The total concentration of Cd, Co, Cu, Mn, Ni, Pb and Zn were detemlined in the soil and plant materials from some selected local government areas of Nassarawa state, Nigeria. The modified USEPA- 3050 method of HNOr HCI04 - H202 was used in the preparation of soil sample for total deternlination whilst the plant materials were digested with HN03 -H202. The CaCh. DTPA extraction method was used in the determination of the concentration of bio available metals in soil samples. The fla...

Impact of Effluents From the Transcorp Hilton Hotel on The Quality Characteristics of The Receiving Water From Maitama Stream Abuja.

ABSTRACT The impact of the effluents from the Transcorp Hilton Hotel on the quality of the Maitama Stream, Abuja was studied. Samples were collected from points upstream (control samples), the effiuent discharge point and points downstream (a total of eight points) and analyzed as follows: Electrochemical methods of determination were used in the determination of pH and dissolved oxygen content whilst classical methods of analysis were used in the determination of total alkalinity and chlori...

Impact of Agricultural Chemical Inputs on Metal Levels in Soil And Arable Plants on Kwali Area Council

ABSTRACT      The concentrations of Pb, Cu, Zn, Ni and Cd in agricultural soils and vegetation of Kwali Area Council were determined by flame atomic absorption spectrophotometry. The HN03 -HCI04-HF mixture was used for the digestion of soil samples for metal determination, while HNOTHCI04 was used for metals determination in vegetation. The coefficient of variation for Pb, Cu, Zn, Ni and ....... Cd in soil were 4.0%, 4.8%, 3.2%, 3.9% and 4.3% while in vegetation were 7.0%, 4.8% 5.4%, 6.9%...

Detection Of Mycolactone By Fluorescent Thin Layer Chromatography (F-Tlc) For The Diagnosis Of Buruli Ulcer

Abstract Buruli ulcer (BU) is a bacterial infectious disease of the subcutaneous fat caused by Mycobacterium ulcerans, resulting in chronic, devastating, necrotizing consequences. M. ulcerans produces a polyketide-derived macrolide toxin called mycolactone, required for the organism’s virulence. The disease manifests initially as a painless pre-ulcerative subcutaneous nodule, a plaque or as a rapidly progressing oedema. The oedema, the severe form breaks down to form characteristic ulcers w...

Determination Of Total Petroleum Hydrocarbons And Selected Heavy Metals In Underground Water And Soil From The Vicinity Of Major Filling Stations In Abuja

ABSTRACT 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 of Total Petroleum Hydrocarbons (TPH) in soil is from 0.8061-34.3103%, respectively. Furthermore, the percentage range of underground water are from...

GC-Ms Determination of Selected Organochlorine Pesticides Residue in Some Vegetable Grown in Gwagwalada Area

ABSTRACT   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 obtained from some locations within Gwgwalada Area Council between the months of May and June, 2015. The pesticides were extracted by the method o...

ELECTRONIC AND VIBRATIONAL ABSORPTION SPECTRAL STUDY OF SOME N - SUBSTITUTED ANILIDES AND SULPHONANLIDES

ABSTRACT  The electronic and vibrational absorption spectra of some N - substituted anilides and sulphonanilides have been studied. The different bands observed have been assigned to the proper electronic and vibrational transitions respectively. The solvent dependence of n - n* and n- n* transitions in these compounds was investigated by studying their UV spectra in pure organic solvents of different polarities. The longest wavelength band displayed by the anilides and the sulphonanilide i...

Quality Evaluation of A Selection of Antibiotics Distributed in Accra (Ghana) And Lagos (Nigeria)

ABSTRACT The persistent prevalence of Counterfeit and substandard drugs poses a clear and present danger globally. Its higher degree of occurrence and under-reporting in developing nations especially in Africa and Asia is of great concern. Antibiotics are amongst the most used and abused in developing countries and as such, the need for its constant surveillance cannot be over emphasised. This study involved the assessment of the quality of three commonly used therapeutic groups of antibioti...

The Reaction Of Some Activated Aromatic Halides With Piperidine, and n-Butylamine In Dipolar Aprotic And Dipolar Protic Solvents

ABSTRACT The reactions of 2-chloro-5-nitro pyridine with piperidine have been studied in acetone and in methanol In acetone, the rate constants are measured as a function of the amine concentration.

PHYSICOCHEMICAL STUDIES OF SOME TRIVALENT METAL B-DIKETONATES

INTRODUCTION B—Diketones participate in tautomeric equilibria where an apparently pure compound is actually a mixture 'of two or three substances having keto and enol structures

Physicochemical Studies Of Some Trivalent Metal &-Diketonates

INTRODUCTION B-Diketones participate in tautomeric equilibria where an apparently pure compound is actually a mixture 'of two or three substances having keto and enol structures.

Thin Layer Chromatographic Studies On Depletion Of Some Herbicides In Two Soil Ecosystems.

ABSTRACT Depletion rates of three triazine herbicides, atrazine, simazine and ametryne and two urea base herbicides, diuron and metobromuron, under laboratory conditions have been investigated in soil samples collected from GAEC, a coastal savannah soil, and KNUST, a forest zone soil. Two hundred grammes of the soil samples were treated with herbicides standard solution to generate herbicide-soil concentration of 10 pg/g and incubated at room temperature for 12 weeks. TLC methodology was used...


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