International Research Journal of Pure and Applied Chemistry

Thermo-stable, Calcium Independent Alpha Amylase from Two Bacillus species in Afar, Ethiopia

T. W. Atsbha, Gulelat D. Haki, S. Abera & T. B. Gezmu · International Research Journal of Pure and Applied Chemistry · 2014

Thermostable enzymes play a major role in the food industry. Two isolates (named as TGS1 and TGS2), which were later identified as Bacillus sp., were able to produce alpha amylase at a higher temperature (45-60⁰C). The enzymes from the microorganisms were characterized at differe...

Open access Research Article 10.9734/IRJPAC/2015/14970

Method Development for Chiral Purification of Racemic Clopidogrel Using Chiral Stationary Phase

Sangeeta Sangwan, Sharwan K. Dewan & Rajesh K. Thaper · International Research Journal of Pure and Applied Chemistry · 2014

HPLC method was developed for resolution of racemic clopidogrel into its chirally pure enantiomer of interest. Screening experiments were performed using amycoat and cellucoat analytical chiral stationary phases in organic solvent based polar and nonpolar eluents in various combi...

Open access Research Article 10.9734/IRJPAC/2015/14075

Heavy Metal Speciation in Some Selected Farms Treated with Urban Solid Waste, in Jos South, Plateau State, Nigeria

Nanven D. Nimyel, J. N. Egila & Y. N. Lohdip · International Research Journal of Pure and Applied Chemistry · 2014

The speciation of metals in environmental samples is a serious factor in appraising the potential environmental impacts, before their disposal. The six step extraction procedure previously proposed by Obasi et al. was used with modification to systematically study the speciation...

Open access Research Article 10.9734/IRJPAC/2015/14179

Structural Characterization of Heterometallic Gold – Iron Clusters

M. Melník & P. Mikuš · International Research Journal of Pure and Applied Chemistry · 2014

Structural survey of the clusters in Cambridge Structural Database was carried out to investigate the stereochemistry about gold and iron in their heterometallic clusters. Clusters ranging from heterobinuclear to polynuclear clusters were included in the survey. The gold atoms ar...

Open access Research Article 10.9734/IRJPAC/2015/11690

Adsorption Isotherm Studies of Ni (II), Cu (II) and Zn (II) Ions on Unmodified and Mercapto-Acetic Acid (MAA) Modified Sorghum Hulls

C. Imaga, A. A. Abia & J. C. Igwe · International Research Journal of Pure and Applied Chemistry · 2014

Aims: To compare the efficiency of Sorghum Hull of two different particle sizes, different concentrations modified with mercaptoacetic acid and the effect of each on the heavy metal removal to obtain optimum conditions for sorption process. Study Design: The concentrations of the...

Open access Research Article 10.9734/IRJPAC/2015/13510

Inhibitive and Synergistic Properties of Ethanolic Extract of Moringa oleifera Leaves on the Corrosion of Zinc in HCl Solution

Fabian A. Ugbe, Mustapha A. Funtua, Abiola V. Ikudayisi & Aloysius A. Pam · International Research Journal of Pure and Applied Chemistry · 2014

The potentials of ethanolic extract of Moringa oleifera leaves as corrosion inhibitor was investigated by evaluating the corrosion behaviour of Zinc immersed in 0.5M, 1.0M, 1.5M and 2.0M HCl (corrodent) solutions each containing varied concentration of the extract (0.1 g/L, 0.3 g...

Open access Research Article 10.9734/IRJPAC/2015/13915

Nanomaterials Life Cycle Analysis: Health and Safety Practices, Standards and Regulations – Past, Present and Future Perspective

Laura Gendre, Kim Blackburn, James Brighton, Veronica Marchante Rodriguez & Hrushikesh Abhyankar · International Research Journal of Pure and Applied Chemistry · 2014

A new technology always raises new issues with its introduction on the market. Nanotechnology is not an exception. The advantages of nanomaterials use are not to demonstrate anymore and so, the commercialization of consumer products based on nanotechnology doesn’t stop increasing...

Open access Research Article 10.9734/IRJPAC/2015/12304

Mixed-Ligand Chelate Formation of Co(II), Ni(II), Cu(II) and Zn(II) Ions with Schiff Base as Main Ligand and Amino Acid as Co-Ligand

M. M. El-ajaily, F. S. Alassbaly, A. M. Etorki & A. A. Maihub · International Research Journal of Pure and Applied Chemistry · 2014

A bidentate NO type Schiff base ligand (L1) has been obtained by the condensation reaction of 4-dimethylaminobenzaldehyde and 2-aminophenol and used as main ligand and l-Alanine as co-ligand (L2), Four novel mixed ligand chelates of composition [M(L1L2)(H2O)2].nH2O, where M repre...

Open access Research Article 10.9734/IRJPAC/2015/11786

Biosorption of Metal Ions from Aqueous Solution by Immobilized Moringa oleifera Bark

B. J. Tizhe, S. A. Osemeahon, I. I. Nkafamiya & M. H. Shagal · International Research Journal of Pure and Applied Chemistry · 2014

This study investigated the effectiveness of immobilized Moringa oleifera bark (IMOB) for the removal of heavy metal ions from waste water. The concentration of residual metal ion concentration was determined using Atomic Absorption Spectrophotometer (AAS). The immobilization of...

Open access Research Article 10.9734/IRJPAC/2015/13712

Infrared Spectroscopic Study of Cs2Ni(XO4)2•6H2O (X = S, Se) and of NH4+ Ions Included in M2Ni(XO4)2∙6H2O (M = Rb, Cs; X = S, Se) and Crystal Structures of (M,NH4)2Ni(XO4)2∙6H2O (M = Rb, Cs; X = S, Se) Mixed Crystals

Veronika Karadjova, Manfred Wildner & Donka Stoilova · International Research Journal of Pure and Applied Chemistry · 2014

The solubility in the three-component Cs2SO4-NiSO4-H2O system was studied at 25°C. It has been established that a double salt, Cs2Ni(SO4)2·6H2O, crystallizes within a wide concentration range. Infrared spectra of neat Tutton compounds Cs2Ni(XO4)2•6H2O (X = S, Se) as well as those...

Open access Research Article 10.9734/IRJPAC/2015/14426