May 2013

Heavy metal levels in selected green leafy vegetables obtained from Katsina central market, Katsina, North-western Nigeria

The levels of Lead (Pb), Cadmium (Cd), Iron (Fe), Zinc (Zn) and Copper (Cu) were determined in four different samples of vegetables purchased from Katsina central market using atomic absorption spectrometer. The mean concentrations of metals ranged from 0.071 mg/kg Pb to 0.632 mg/kg Cu. The relative abundance of metals in vegetables followed the sequence Cu (0.483 mg/kg) > Zn (0.268 mg/kg) > Fe (0.260 mg/kg) >...

Author(s): Shuaibu l. K., Yahaya M., and Abdullahi U. K.

May 2013

Speciation of heavy metals in soil, and their phytoavailability in edible part of Amaranthus hybridus cultivated along major roads in Ile- Ife, Nigeria

Heavy metal content in soil and Amaranthus hybridus cultivated on it were determined by speciation method and acid dissolution. The atomic absorption spectrophotometer was used to quantify the metals in the soil and vegetable. The mobilisation of metals from soil to plants as indicated by the metal contents in the soil and vegetables decreased in this order Fe> Mn > Zn > Cu >Pb >...

Author(s): Olabanji Iyabo Oluremi, Oluyemi Emmanuel Ayodele, Bello Muibat Olabisi and Makinde Oladotun Wasiu

May 2013

Determination of some essential minerals in selected edible insects

The essential minerals, Cu, Fe, Mg, Co, Zn, Na and K were determined in selected edible insects (Locust, Cricket, Grasshoppers and Termite) using standard analytical method. The result obtained from the study shows that  Cu content ranged from 85.5 ± 3.40 mg/kg; Fe from 390.025 ± 31.61 mg/kg; Mg from 1534.84 ± 85.01 mg/kg; Co from 4.35 ± 0.28 mg/kg; Zn from 208.11 ± 63.90 mg/kg;...

Author(s): Ajai A. I., Bankole M., Jacob J. O. and Audu U. A.

May 2013

Quinazolin derivatives as eco-friendly corrosion inhibitors for low carbon steel in 2 M HCl solutions

Some quinazoline derivatives such as: 3-(4-chlorophenyl)-2-methylquinazolin-4(3H)-one (CMQ) and 2-methyl-3-(4-nitrophenyl) quinazolin-4(3H)-one (MNQ) were investigated as corrosion inhibitors for carbon steel in 2 M HCl solution. Electrochemical impedance spectroscopy (EIS), potentiodynamic polarization, electrochemical frequency modulation and weight loss methods were used to study the inhibition action at 30°C....

Author(s): A. S. Fouda, G. Y. Elewady, H. A. Mostafa and S. Habbouba