April 2013
A report on soap making in Nigeria using indigenous technology and raw materials
In everyday life we use soap to wash dishes, clean clothes, or keep our bodies presentable to nose and eye. Soap therefore has numerous applications in our daily life. One of its great values is keeping our household a far better place to live and work. However, contrary to what one may think, soap was invented not only for the purpose of personal hygiene; rather, it was invented to solve other purposes. Colourful yarns...
April 2013
Solid phase extraction and determination of Chromium species using multiwalled carbon nanotubes by solid phase extraction: Flame atomic absorption spectrometry (FAAS)
Multiwalled carbon nanotubes (MWNTs) were used as absorbent for extraction of trivalent chromium (Cr(III)) and hexavalent chromium (Cr(VI)), ions in the presence of diethyldithiocarbamate as a chelate by solid phase extraction method. A novel and selective method for the fast determination of trace amounts of chromium species in water samples has been developed. The procedure is based on the selective formation of...
April 2013
Synthesis and antibacterial activity of 7-deacetoxy-7α-hydroxygedunin
A convenient synthetic route for bioactive 7-deacetoxy-7α-hydroxygedunin was realized by one-step conversion of 7-deacetoxy-7α-hydroxygedunin potassium salt. The 7-deacetoxy-7α-hydroxygedunin was obtained in 88% w/w yield as a fluffy white precipitate by recrystallization from methanol. The 7-deacetoxy-7α-hydroxygedunin and the starting material were evaluated for antibacterial activity...
April 2013
Polycyclic aromatic hydrocarbons in smoked Lates niloticus from selected markets, Gulu District, Uganda
Hot smoking is among the oldest methods of preservation which mankind has used in food processing. Potential health hazards associated with smoked foods may be caused by carcinogenic components of wood smoke – mainly polycyclic aromatic hydrocarbons (PAHs) and their derivatives. This paper presents results based on the determination of PAHs in smoked Lates niloticus from three markets in Gulu district, northern...
April 2013
Removal of Erichrome Black T from aqueous solution using low cost waste biomass (cow dung ash) at 303 and 308K
Waste biomass cow dung ash was used as an adsorbent for the removal of Erichrome Black T (EBT) from aqueous solution using simple batch technique. The contact time in terms of adsorption capacity was optimized at 303 and 308K, respectively and it was found to be 60 min for both temperatures. All the experiments were carried out at pH = 7. The adsorption capacity of EBT increased from 0.20 to 0.75 and 0.2 to 0.8 mg/g...
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