Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

R. J. Batra ¹, A. N. Garg ¹

Affiliations
1 Department of Chemistry, Nagpur University, Nagpur 440 010, IN

Abstract

A neutron activation analysis method based on thermal neutron irradiation from ²⁴¹Am-Be source is suggested for the determination of Mn in pyrolusites. The method uses ⁵⁵Mn (n, γ) ⁵⁶Mn reaction and counting of 0.847 MeV γ-rays on NaI (Tl) detector coupled with single channel analyzer. The method has been employed for the analysis of pyrolusites and results were found in good agreement with those from conventional chemical methods. The method is fast, non-destructive and economic and can be used for the determination of Mn in its ores.

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R. J. Batra ¹, A. N. Garg ¹

Affiliations
1 Department of Chemistry, Nagpur University, Nagpur 440010, IN

Abstract

The efficiency of neutron activation using a 5 Ci ²⁴¹Am-Be neutron source as an analytical technique for bauxite analysis has been evaluated. The method based on fast neutron irradiation is suggested for the determination of Al, Si and Fe employing the reactions ²⁷Al (n,p) ²⁷Mg, ²⁸Si (n,p) ²⁸Al and ⁵⁶Fe (n,p) ⁵⁶Mn respectively. Resultant 'γ-activity was counted on a NaI (Tl) detector coupled with single channel analyzer. The results were found to be in fair agreement with those from conventional wet analysis.

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