Determination of Nickel in Soil around Lead Mining Area

Determination of Nickel in Soil around Lead Mining Area in Ishiagu, Ivo Local Government Area, Ebonyi State

Introduction

Soil represent a matrix with inherent heterogeneity and variable mineral composition leading to analytical complexity. This challenge has been recognized by the soil community and consequently acceptable precision and accuracy of digestion methods has been reported as typically <20% (Khan, 2008). The pollution of the environment increased rapidly during the last years, especially the contamination of soil and underground water. [Read more…]

Potentiometric Study In Ni(Ii) Complexes Derived From Acetylacetone Ethylenediamine (Acacen)

Potentiometric Study In Ni(Ii) Complexes Derived From Acetylacetone Ethylenediamine (Acacen)

Introduction

Potentiometric Study:Generally, a Schiff base, named after Hugo Schiff is a compound with a functional group that contains a carbon-nitrogen double bond with the Nitrogen atom connected to an ary or alkyl group, not hydrogen (Nic, 2006). Schiff base in a broad sense has the general formula where R is an organic side chain. In this definition, Schiff base is synonymous with azomethine. Some restrict the term to the secondary aldimines (Azomethines where the carbon is connected to a hydrogen atom), thus with the general formula RCN=NR1(Nic, 2006). [Read more…]

Studies on the Use of Acetylacetoneethylenediamine for Spectrophotometric Analysis of Hg²⁺

Studies on the Use of Acetylacetoneethylenediamine for Spectrophotometric Analysis of Hg²⁺

Introduction

Spectrophotometric:Compounds containing an azomethine group are know as Schiff base(imines).And from researches the chelating abilities, analytical and biological application of these compounds have captured remarkable attention(pandeya .S. N, Sriam .D, Nath, 2000).

O

R-NH2 + R-CH           R=N-CH-R + H2O

Where R maybe aliphatic or aromatic group. The Schiff base of an aliphatic aldehydes are quite unstable and are polymerizable (Bruce .M.I 2004). While those from aromatic aldehyde have an effective conjugation system and are more stable (Csabai. P, Joo .F 2004).The condensation of amines with aldehyde and ketone have numerous applications which include preparative use, identification of carbonyl or amino compounds, or protection of these groups during complex sensitive reactions. [Read more…]

Proximate Nutritional And Mineral Content Analysis Of Dried Moringa Oleifera Leaves

Proximate Nutritional And Mineral Content Analysis Of Dried Moringa Oleifera Leaves

Introduction

Background of the Study

Moringa Oleifera belongs to the monogeneric family of shrubs and trees, called Moringaceae (Dalziel, 1995). The tree originated from Agra and Qudh in Northwestern region of India, South of the Himalayan Mountain. The tree has spread to almost all tropical belt because it is drought- resistant (Irvine, 1961). According to Odee, (1998), the leaves, fruits, flowers and immature pods are edible and they form part of traditional diets in many countries of the tropics and sub-tropics. The oil obtained from the seeds is pale yellow, sweet and edible. It is almost odourless and possesses an appreciable bland test (Makkar, and Becker, 1997). [Read more…]