March 2009

A comparative assessment of soil pollution by polycyclic aromatic hydrocarbons in two Niger Delta communities, Nigeria

  This study determined, in comparison with guideline limits, the levels of Polycyclic Aromatic Hydrocarbons (PAH) in the soils at Eleme (highly industrialized) and Ahoada East (less industrialized) communities in the Niger Delta Area. Sixteen grab soil samples with 8 samples each from different locations in each community were collected at depth 0 - 15 cm using an auger. About 500 g of soil from each...

Author(s): Godson R. E. E. Ana, Mynepalli K. C. Sridhar and Godwin O. Emerole

March 2009

Methylene blue (MB) adsorption from glycerol solution onto the twin habit of α-goethite

  Adsorption of methylene blue onto the surface of synthetic twin habit of α-goethite habit has been investigated in glycerol solution at 25, 30 and 35°C. For the twin habit adsorbent, it appears the results are consistent with an adsorbed phase confined to monolayer model with edgewise orientation of methylene blue (MB) molecules on the surface. Composite isotherms were calculated from the apparent...

Author(s): S. M. J. Zubairu, G. F. S. Harrison, A. Uzairu and J. F. Iyun

March 2009

Solid phase extraction of Cd(II) using mesoporous organosilicas and determination by FAAS

  A simple and reproducible method for the rapid extraction and determination of trace amounts of Cd(II) ions using mesoporous organo-silicas mesoporous silica and atomic absorption spectrometry is  presented. Common coexisting ions did not interfere with the separation and determination. The preconcentration factor was 100 (1 ml elution volume) for a 100 ml sample volume. The limit of detection of...

Author(s): Ali Moghimi, Reza Ghiasi, Alireza Abedin and Shahriar Ghammamy