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Search Results: 1 - 10 of 330061 matches for " S.S. Mohammed "
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Comparison between Calcimetric and Titrimetric Methods for Calcium Carbonate Determination  [PDF]
Pakhshan M. Maulood, Akram O. Esmail, Mohammed S.S. Dohuki, Dalshad A. Darwesh
Open Journal of Soil Science (OJSS) , 2012, DOI: 10.4236/ojss.2012.23031
Abstract: This study was conducted during 2008-2009 ,which included calcium carbonate determination from 84 locations (40 soil samples from Erbil, 24 samples from Sulaimani and Kirkuk in addition to 20 samples from Duhok) using calimetric and titration method. The results indicated to significance correlation coefficient between the studied methods or it means that the results of both methods are similar.
Determination of Selected Physical Properties and Their Relationship with Moisture Content for Sorghum Crop
V.I.O. Ndirika,S.S. Mohammed,S.S. Mohammed
Journal of Food Technology , 2013,
Abstract: Some selected physical properties of sorghum crop such as grain length, width, thickness, surface area, sphericity, roundness, angle of repose, thousand kernel weight (TKW), specific gravity, bulk density and porosity were determined. The relationships of these properties with moisture content were also presented. From the results, the kernel volume and other dimensions such as length, width and thickness increased with increase in grain moisture content. Comparative evaluation of the two varieties of sorghum (farafara and short kaura) on the above properties shows that only the difference in the means of a thousand kernel weight (TKW) and angle of repose (grain to glass) are the parameters which are statistically significant at 5 percent level of significance. The result also revealed that parameters such as length, width, thickness and volume of grain increased with increase in moisture content. Correlation coefficient between 86.6% - 97.9% were obtained with the relationship between moisture content and grain length, grain width, grain thickness and grain volume for both varieties.
Use of Sequential Extraction to Assess Copper Fractionation in Soil and Guinea Corn from Kaduna Metropolis, Nigeria
S.S. Mohammed,M.B. Mohammed,N. Musa
Research Journal of Environmental and Earth Sciences , 2012,
Abstract: In this study, sequential extraction technique was employed to determine the concentrations of copper in Guinea corn and soil samples. The copper contents of guinea corn and soil were determined using Flame Atomic Absorption Spectrometry (FAAS). The soil samples related to the guinea corn were digested and extracted using different digestion and extraction reagents. The results revealed that the soil samples obtained from various locations in Kaduna, contain varying amounts of Cu and was distributed between Residual, Oxide and Carbonate/Organic fractions. The results also showed that in some of the sampling locations, the Cu concentration in the soil was above the tolerable limit of 100 mg/kg and the ANOVA (p = 0.007<0.05), indicated a significant difference in the copper concentrations across the various guinea corn crops. Similarly, the ANOVA (p = 0.114>0.05) showed that there is no significant difference in the copper concentrations across the various guinea corn grown soils.
The Uptake of Lead by Maize Grown on Selected Agricultural Areas of Kaduna Metropolis, Nigeria
S.S. Mohammed,M.B. Mohammed,N. Musa
Asian Journal of Agricultural Sciences , 2012,
Abstract: The research was carried out to determine the uptake of the metal by maize from soil samples of Kaduna, Nigeria. The lead concentrations of the maize and soil samples were determined using Flame Atomic Absorption Spectrometry (FAAS). The soil samples related to the maize were digested and extracted using different digestion and extraction reagents. The results indicated that the soil samples collected from various locations contain varying amounts of Lead and was distributed between residual, Oxide and carbonate/organic fractions. The result of the study also showed that in all the sample locations, the Pb contained in the soil was below the tolerable limit of 200 mg/kg and the ANOVA (p = 0.000<0.05) showed a significant difference in both the Lead concentrations across the various maize crops and across the various maize grown soils.
Content of Copper in Maize and Soil Collected from Selected Agricultural Areas in Kaduna, Nigeria
S.S. Mohammed,M.B. Mohammed,N. Musa
British Journal of Pharmacology and Toxicology , 2012,
Abstract: This study was conducted to determine the content of maize in soil so as to evaluate its mobility, bioavailability and eco-toxicity. The copper content of maize and soil samples was determined using Flame Atomic Absorption Spectrometry (FAAS). The soil samples related to the maize were digested and extracted using different digestion and extraction reagents. The results indicated that the soil samples collected from various locations contain varying amounts of Cu and was distributed between Residual, Oxide and Carbonate/Organic fractions. The result of the study also showed that, in some of the sampling locations, the Cu content in the soil was above the tolerance limit of 100 mg/kg and the ANOVA (p = 0.000<0.05) indicated a significant difference in both the copper concentrations across the various maize crops and maize grown soils.
Assessment of levels of copper, cadmium and lead in secretion of mammary gland of cows grazed on open fields
A.O Lawal, S.S Mohammed, D Damisa
Science World Journal , 2006,
Abstract: The levels of copper, cadmium and lead were determined in milk samples from cows grazed on open fields. The use of H2O2 cleared the residual colours of the metal solutions following digestion with HNO3 acid. The results of the Atomic Absorption Spectrophotometric analysis of the metal solutions from the milk samples showed the metal concentrations in the order Pb (0.531±0.299 mg/dm3)>Cd (0.257±0.127 mg/dm3)>Cu (0.062±0.026 mg/dm3). The levels of Pb and Cd in the milk samples studied exceeded the permissible maximum daily intake recommended by W.H.O. in the health criteria.
Evaluation of the Proximate, Pasting and Sensory Characteristics of Cassava Flour (Fufu) Fortified with Pigeon Pea Flour
S.S. Akoja,A.O. Mohammed
Pakistan Journal of Nutrition , 2011,
Abstract: The nutritious value of Fufu-fermented cassava flour was improved through supplementation with 10, 20, 30 and 40% pigeon pea flour and the products were subjected to proximate composition, pasting characteristics and sensory tests, with 100% cassava flour as control. The results showed that the pigeon pea Fufu flour contained 7.70% protein, 0.27% fat, 1.08% ash at 10% level of inclusion and this increased to 16.45, 0.54 and 1.24% for protein, fat and ash respectively at 40% level of inclusion. Meanwhile, the carbohydrate contents decreased from 90.28 to 80.81% at 10% and 40% inclusion of pigeon pea flour respectively. Pasting characteristic decreased with increased pigeon pea inclusion. Peak viscosity decreased from 341.92 to 219.80 (RVU) final viscosity from 301.71 to 191.00 (RVU), setback value from 82.29 to 58.21 (RVU) likewise the peak time from 4.93 to 4.33 min at 10% and 40% level of inclusion of pigeon pea respectively. There was a slight significant difference in overall acceptability between 10% level of inclusion and the control (100% cassava flour).
Analysis of Soil Ph in Guinea Corn and Maize Grown Soils of Kaduna Metropolis-Nigeria
S.S. Mohammed,J.T. Ayodele
Advance Journal of Food Science and Technology , 2011,
Abstract: The pH, either directly or indirectly affects several mechanisms of metal retention by soils. In this research work, the pH values of the soils samples from the various locations of Kaduna metropolis were determined so as to assess the bioavailability, mobility and solubility of the metals in the soils. The pH was measured using a microprocessor pH meter model 210. The pH values of the soil samples from the various locations were acidic and a significant difference was indicated in the pH values across the guinea corn and maize grown soils. The least pH value across the guinea corn grown soils was found in the first homogeneous subgroup comprising of Kakuri and Tudun Wada, while the highest pH value was in the forth homogeneous subgroup which included Nasarawa and Unguwan Mu’azu. Similarly, the least pH value across the maize grown soils was found in the first homogeneous subgroup which contained Unguwan Mu’azu and Mando while the highest pH value across the maize grown soil was in the fourth homogeneous subgroup which included Nasarawa and Kachia.
Speciation of Nickel in Soils and Cereal
J.T. Ayodele and S.S. Mohammed
Research Journal of Applied Sciences, Engineering and Technology , 2011,
Abstract: The levels of trace elements in food and agricultural samples have been shown to influence human and plant metabolism. The study of heavy metal speciation is of interest for the evaluation of their mobility, bioavailability and ecotoxicity. In this study, the Nickel concentrations of the cereal and soil samples were determined using Flame Atomic Absorption Spectrometry (FAAS). The soil samples related to the cereal were digested and extracted using different digestion and extraction reagents. The results indicate that the soil samples collected from various locations, contain varying amounts of the metals, and it was distributed between Residual, Oxide and Carbonate fractions. The results of the study also showed that the lowest value of total Ni concentration in soil was in sampling point KC4 (2.93 mg/kg) and the highest value was in points ST6 and ST7 (105.37 mg/kg). In some of the sample locations, the Ni concentration was above the tolerable limit value of 50 mg/kg. The relationship between the cereal Ni and soil-extractable Ni concentrations was significant (p<0.05).
Comparison of Extraction Techniques for the Determination of Ni, Cu, Zn and Pb in Maize grown soils of Kaduna Metropolis, Nigeria
S.S. Mohammed,J.T. Ayodele
Asian Journal of Agricultural Sciences , 2011,
Abstract: To assess the availability of metals in soil for absorption, the chemical forms must be determined. Sequential extraction procedures are useful to determine the geochemical partitioning of heavy metals in the soil. In this study, the Ni, Cu, Zn and Pb concentrations of soil samples from maize grown soils in Kaduna metropolis were determined using Flame Atomic Absorption Spectrometry (FAAS). Hot and cold extraction techniques were employed for the digestion and extraction of the soil samples using 0.05 mol/L EDTA, 1.0 mol/L oxalic acid and 1.0 mol/L acetic acid. The results indicated that there is no significant difference between hot and cold techniques for these metals in the reagents except for Zn in 0.05 mol/L EDTA and 1.0 mol/L oxalic acid where there is significant difference between hot and cold extraction and that the hot extraction is superior to the cold extraction with mean values of 25.63 for 0.05 mol/L EDTA and 26.37 for 1.0 mol/L oxalic acid.
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