title: Development and applications of the k0-based internal mono standard INAA method.
abstract: 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).
authors.affiliation: Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India.
authors.forename: R
authors.initials: R
authors.lastname: Acharya
authors.forename: A G C
authors.initials: AG
authors.lastname: Nair
authors.forename: K
authors.initials: K
authors.lastname: Sudarshan
authors.forename: A V R
authors.initials: AV
authors.lastname: Reddy
authors.forename: A
authors.initials: A
authors.lastname: Goswami