Analytical Chemistry Research Papers/Topics

Assessment of Polycyclic Aromatic Hydrocarbons (PAHs) in Charcoal Production Areas in Nasarawa State

Wood charcoal is the most important means of human exposure to Polycyclic Aromatic Hydrocarbons (PAHs). The Polycyclic Aromatic Hydrocarbons (PAHs) were observed in soil sample and charcoal is the major source of human exposure to PAHs. In the present study, the PAHs concentrations were determined using gas Chromatograph/Mass Spectrometer (GC/MS), and the results showed that all the PAHs analyzed were below and above detection limits of the equipment; and these were considered to present l...

Development of an aflatoxin B1 specific molecularly imprinted solid phase extraction sorbent for the selective pre-concentration of toxic aflatoxin B1 from child weaning food, Tsabana

Abstract: In this thesis, the synthesis, optimization and application of a simple aflatoxin B1 (AFB1) specific extraction polymer sorbent based on molecular imprinting technology (MIT), for the selective pre-concentration of the potent AFB1 toxin from child weaning food, Tsabana manufactured in Serowe, Botswana is presented. As a food safety regulatory measure, the Tsabana must be cleared of the hazardous aflatoxins especially AFB1 before consumption as it is the most potent amongst those co...

A novel molecularly imprinted polymer for the selective removal of interfering hemoglobin prior to whole blood analysis

Abstract: A novel, selective, sensitive, cheap and robust hemoglobin imprinted polymer (Hb-MIP) in the form of a powder, was synthesised through bulk, free-radical polymerization employing molecular imprinting technology (MIT), for the selective removal of interfering hemoglobin from whole blood samples prior to instrumental analysis in molecular diagnostics and toxicological assays. Following solid phase extraction clean-up through batch rebinding experiments, the Hb-MIP powder effectively ...

Estimation of uncertainty on pH measurement results: a direct pathway to quality assurance

Abstract: A technique for estimation of measurement uncertainty of routine pH measurement using pH meters; Thermo scientific Orion Star and Basic 20 is presented. There are issues associated with pH measurements, what we actually measure is not usually what we would expect or even intend, and it is common practice that analysts just take the immediate reading without doing repetitions. The pH measurements made from one chemical laboratory are not consistent with those made in a differen...

Application of a custom-synthesized molecularly imprinted polymer for the selective isolation of total glucose and fructose from `100%` fruit juice prior to instrumental analysis

Abstract: This thesis presents a novel sample preparation strategy that employed a custom-synthesized glucose – fructose (G-F) specific molecularly imprinted polymer (MIP) powder as an adsorbent for the simultaneous, selective extraction, isolation, pre-concentration of total glucose and fructose from the complex and `dirty` sample matrix of ‘100%’ fruit juices in order to improve their accurate analysis. The ‘100%’ fruit juice samples were purchased from retail shops in Palapye, B...

A novel multi-templated Cu-Fe-Ni ion imprinted polymer for the selective and simultaneous removal of toxic metallic ions from wastewater

Abstract: A novel multi-templated Cu-Fe-Ni ion imprinted powder was synthesized to demonstrate the selective and simultaneous removal of targeted ions; Cu(II), Fe(II) and Ni(II), employing molecular imprinting technology (MIT) via template (print ions) guided by bulk polymerization method reacting methacrylic acid (MAA) as the functional monomer and ethylene glycol dimethylacrylate (EGDMA) as cross linking agent in the presence of the initiator azobisisobutyronitrile (AIBN); Cu(II), Fe(II) a...

Phytochemical investigation of the aerial parts of Kleinia longiflora

Abstract: Kleinia longiflora belongs to the family Asteraceae and genus Kleinia (synonym Senecio) which comprises of about 40 species. Preliminary phytochemical investigation done on this plant showed the presence of terpenoids, tannins, alkaloids and flavonoids. The phytochemical investigation on the non-volatile compounds from the plant led to the isolation of a triterpenoid lupeol 1 (0.403 g), a flavonoid named isorhamnetin-5-O-α-rhamnopyranosyl (1'''-6'')-β-glucopyranose 11 (0.658 ...

Determination of Vanillin and its Adulterants in Consumer Ice cream using High Pressure Liquid Chromatography

AbstractThe paper focuses on the determination of the concentration of vanillin in six types of ice creams purchased from supermarkets Aldi and Sainsbury’s. Similar areas of research haven’t calculated the extraction efficiencies of their proposed methods. In addition to there being no extensive attempts to determine if any adulterants within the selected vanilla ice creams are present. 

Assessment of Heavy Metals in The Muscle of Domestic Birds

Abstract— The main objective of the present study was to provide the information on the concentration and distribution of manganese (Mn), iron (Fe), copper (Cu), zinc (Zn), cadmium (Cd) and lead (Pb), in the muscle of different species of domesticated birds  (guinea fowl, Local fowl, Cockerel) considering both male and female species using  Atomic absorption spectrophotometry. Initially, the samples were digested with concentrated nitric acid, Hydrogen peroxide and Perchloric acid in a T...