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  • Author or Editor: A. Naeem x
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Abstract  

Instrumental neutron activation analysis /INAA/ technique has been applied to a water sample to determine the elemental concentrations. The sample was irradiated with a neutron flux of 1.2×1012 n cm–2 s–1 for two different periods followed by counting at three different decay times, using two coaxial type high-resolution Ge/Li/ detectors. The dominant elements determined in the water sample are Ca, Cl, Na, Mg, and K present in ppm-level while Co, I, Mn, Sm, and Sb are present in smaller amounts, approximately on the average 0.01 ppm. Only traces of other elements such as the rare-earth elements, Ag, As, Ba, Cu, Cd, Fe, Sr, W, Zn, seem to be present in the water sample.

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Abstract  

Instrumental neutron activation analysis (INAA) technique has been applied to a water sample to determine the elemental concentrations. The sample was irradiated at a neutron flux of 1.2·1012 n·cm–2·s–1 for two different periods followed by counting at three different decay times, using two coaxial type high-resolution Ge(Li) detectors. The dominant elements detected in the water sample are Ca, Cl, Na, Mg, and K present in levels while Co, I, Mn, Sm, and Sb are present in smaller amounts approximately on the average 0.01 ppm. Only traces of other elements such as rare-earth elements, Ag, As, Ba, Cu, Cd, Fe, Sr, W, Zn, seem to be present in the water samples.

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Abstract  

A study of a basic alkaline rock has been carried out using instrumental neutron activation (INAA), X-ray fluorescence (XRF) and wet chemical analyses techniques. Elemental composition and major oxides have been reported. The rock is found to be rich in K2O, Na2O, MgO, CaO, Al2O3, and Ti–Fe minerals. The transition elements are also fairly concentrated in the rock. The analyses show the igneous nature of the rock from a high potassic origin.

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Abstract  

A petrochemical study of some rock samples has been carried out using different experimental techniques. The rock samples were collected from the Al-Mizil area, Saudi Arabia. Al-Mizil area consists of Precambrian metasediments which belong to the Halaban Formation. The plutonic rocks later intruded into the Halaban Formation. Major oxides and trace elements in these rocks are presented. The study indicates that the rocks are mainly of granitic composition. The petrochemical data suggest a magmatic origin for Al-Mizil granitic rocks.

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Abstract  

INNA has been adopted for multielemental study of an acidic rock (OH-121) and three basic rocks (EH-121, WH-121 and SI-121) collected from Al-Madina in the Western Region of the Kingdom of Saudi Arbia. The basic rocks have higher concentrations of the transition elements Ti, V, Cr, Mn and Co, as compared to the acidic rock.

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Abstract  

Multielemental analysis of an iron ore from the Kingdom of Saudi Arabia was carried out using Instrumental Neutron Activation Analysis (INAA) with Ge(Li) detectors. The spectra were analysed with the help of an off-line computer programme. Twenty five elements are observed to be present in the ore. The elements of major interest are Fe, Al and Ca with 51.5%, 3.6% and 2.2% concentrations, respectively.

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