Development and applications of the k0-based internal mono standard INAA method.
The k0-based internal monostandard instrumental neutron activation analysis (IM-INAA) method, developed and standardized in our laboratory, is capable of analyzing both small and large samples of different sizes and shapes. Use of in-situ relative efficiency makes the method geometry independent. In this paper, we present the development of this methodology and applications to two types of alloys namely, stainless steel and brass. A stainless steel certified reference material, BCS 466 was also analyzed to evaluate the accuracy of the method. Absolute concentrations in these alloys were arrived by a standard-less method. The method has also been applied for the analysis of large-size wheat samples (0.45-1 kg) and the results were compared with the data obtained for selected elements in sub-samples (50-1000 mg).
Acharya
R
R
Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India.
Nair
A G C
AG
Sudarshan
K
K
Reddy
A V R
AV
Goswami
A
A