DETERMINATION OF THRESHOLD RADIATION DOSE IN THE DEGRADATION PROCESS OF INDIGO DYE BY GAMMA IRRADIATION TECHNIQUE

Category : JOURNAL OF PHYSICAL SCIENCE AND INNOVATION, VOLUME 5, NUMBER 1, 2013


T. S. Bich1, S.P. Mallam2, D.G. Diso1 and M.A.Y. Hotoro1
1Department of Physics, Kano University of Science and Technology, Wudil, Kano, Nigeria
2Nigeria Atomic Energy Commission, Abuja, Nigeria
Email: tsbichiosh@yahoo.com
ABSTRACT
Irradiation of indigo dye samples with gamma radiation at different radiation doses reveal that as radiation dose is increased the absorbance of the dye decreases. At the radiation dose of 0.6 kGy the spectral peak of the dye samples completely disappears indicating complete degradation of the dye. It is further observed that the behavior/decrease in absorbance of the dye samples has a peculiarity at the radiation dose of 0.3 kGy. Such peculiarity is also clearly observed in the curves for absorbance versus radiation dose, Full Width at Half Maximum (FWHM) versus radiation dose, peak height versus radiation dose and change in base points versus radiation dose. The possible implication of these observations is discussed.

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COMPARISON OF GEL AND MACROPOROUS RESINS USING THE REMOVAL OF Pb (II) IONS FROM AQUEOUS SOLUTIONS BY CATIONS EXCHANGE RESINS SYNTHESIZED FROM ORANGE MESOCARP AS CASE STUDY

Category : JOURNAL OF PHYSICAL SCIENCE AND INNOVATION, VOLUME 5, NUMBER 1, 2013


Iyekekpolor R.M.
Department of Chemistry
University of Benin, Benin City, Edo State
Email: iyekekpolorukevwe@gmail.com
ABSTRACT
The gel and macroporous resins were compared using the removal of Pb(II) ions from aqueous solution by cation exchange resin synthesized from orange mesocarp. The resin synthesized from the orange mesocarp extract was observed to be a gel type resin while that synthesized from the orange mesocarp residue was observed to be a macroporous type resin. The experiment was carried out using 5ppm, 10ppm, 15ppm, 20ppm, and 25ppm solution of Pb(II) ion and 0.5g of the dry resin was added to 15ml of each concentration solution. Analysis using the atomic absorption spectrophotometer show 84.6% metal ion removal for the 5ppm solution orange mesocarp extract resin (gel type) and 41.0% metal ion removal for the 5ppm solution with the orange mesocarp residue resin (macro-porous type). The initial pH of the metal ion solution decreased from 6.8 to 1.5 for both resin. The result indicates that the orange mesocarp extract resin removed more metal ions at lower concentrations (5ppm) than the orange mesocarp residue resin.

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PROXIMATE COMPOSITION AND LEVELS OF SOME ANTI-NUTRIENT CONTENTS OF Urgineaaltissima

Category : JOURNAL OF PHYSICAL SCIENCE AND INNOVATION, VOLUME 5, NUMBER 1, 2013

A.S. Kamba., L. Abubakar., M.U. Muhammad., S.M. Adamu and S. Muhammad.
Department of Chemistry
Shehu Shagari College of Education, Sokoto State
Email: Lawaligada@gmail.com
ABSTRACT
Proximate composition and levels of some anti-nutrient in Urgineaaltissima was investigated. The objective of the study is to investigate the nutritional properties of Urgineaaltissima using standard analytical methods. On dry weight basis, the proximate analyses showed it contained moisture (8.33 ± 0.57%), crude lipid (2.16 ± 0.28%), ash (6.66 ± 0.76%), crude protein (3.70 ± 0.07%), crude fibre (5.66 ± 0.57%), available carbohydrate (81.7±7.90%) and calorific value (361.4Kcal/100g). the results of mineral analysis indicated that the sample contained appreciable amount of mineral elements with potassium as the predominant element in the sample. Anti-nutritional analysis showed the presence of phytate (75.62mg%), oxalate (0.07mg%), saponins (4.60mg%) and hydrocyanic acid (1.22mg%). The values are lower than the reference toxic standard levels. Therefore, rgineaaltissima could supplement the potential nutritional uses.

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