Chemical characterization of graphite by instrumental neutron activation analysis |
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| Authors: | Amol D Shinde R Acharya R Verma A V R Reddy |
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| Institution: | 1. Analytical Chemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai, Maharashtra, 400 085, India
2. Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai, Maharashtra, 400 085, India
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| Abstract: | Nuclear and commercial grade graphite samples were analysed by instrumental neutron activation analysis (INAA) using high flux reactor neutrons. Eleven elements (Na, K, As, Sc, Fe, Cr, Co, Zn, La, Ce, and Sm) were determined in eight samples of graphite (two nuclear grade and six commercial grade) by irradiating at a neutron flux of 3?×?1013 cm?2 s?1 in CIRUS reactor and assaying the activity by high-resolution gamma ray spectrometry using 40% relative efficiency HPGe detector coupled to an MCA. Concentrations of elements were determined by relative method of INAA. Results of both types of graphites as well as detection limits achieved by INAA method are discussed in the paper. |
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