1
|
Radiological and elemental analysis of soils from Hunza in Central Karakoram using gamma-ray spectrometry and k 0-instrumental neutron activation analysis. J Radioanal Nucl Chem 2015. [DOI: 10.1007/s10967-015-4220-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
2
|
Determination of elements in Hunza River sediment by k 0 instrumental neutron activation analysis. J Radioanal Nucl Chem 2013. [DOI: 10.1007/s10967-013-2466-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
3
|
Khalid N, Wasim M, Lodhi NA, Arif M. Performance evaluation of k 0-instrumental neutron activation analysis and flame atomic absorption spectrophotometry in the characterization of various types of alloys. J Radioanal Nucl Chem 2012. [DOI: 10.1007/s10967-012-2333-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
4
|
Wasim M, Ahmad S, Arif M, Daud M, Nawaz H. Comparative performance of semi-absolute k
0-instrumental neutron activation analysis and Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) for compositional decoding of aluminum base alloys. RADIOCHIM ACTA 2011. [DOI: 10.1524/ract.2011.1809] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Abstract
Samples of certified aluminum base alloys were analyzed by semi-absolute, standardless k
0-instrumental neutron activation analysis (k
0-INAA) for compositional decoding. Irradiations were performed at two research reactors located at Pakistan Institute of Nuclear Science and Technology having nominal thermal neutron fluxes of 1013 and 1012 cm−2 s−1. The experimentally optimized parameters for NAA suggest a maximum of three sets of irradiations for the quantification of 8 major and minor elements. Moreover, the same conditions provided quantitative results for 10 other elements as impurities, which were not reported by the supplier of the reference material. The same alloys were analyzed by inductively coupled plasma optical emission spectrometry (ICP-OES) where all impurity elements, quantified by k
0-INAA, were below the detection limits. A comparison of % relative deviation of the results obtained by k
0-INAA and ICP-OES revealed that the former has better accuracy than ICP-OES, but k
0-INAA has poor limits of detection for Mg, Si and Ti in aluminum base alloy.
Collapse
Affiliation(s)
| | - Sajjad Ahmad
- Quaid-i-Azam University, Department of Chemistry, Islamabad, Pakistan
| | - Mohammad Arif
- Nuclear Chemistry Division, Pakistan Institute of Nuclear Science, Islamabad, Pakistan
| | - Muhammad Daud
- Pakistan Institute of Nuclear Science and Technology, Nuclear Chemistry Division, Islamabad, Pakistan
| | - H. Nawaz
- Quaid-i-Azam University, Department of Chemistry, Islamabad, Pakistan
| |
Collapse
|
5
|
Wasim M, Arif M, Zaidi JH. Determination of the activation constants for miniature neutron source reactor (MNSR) by linear least squares regression. RADIOCHIM ACTA 2010. [DOI: 10.1524/ract.2011.1788] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Abstract
This paper presents a detailed description of the determination of experimental activation constants for 22 elements for miniature neutron source reactor (MNSR). The activation constants have been measured for the most intense γ-rays of the radionuclides commonly observed in neutron activation analysis. The experimental values have been compared with those based on mathematical expression and calculated by using f and α of the irradiation channel and k
0 and Q
0 factors from published literature. A comparison of the expression-based and experimentally determined activation constants shows a good agreement, except for some cases where difference is about 10% of the expression-based values. The activation constants were validated by analyzing synthetic multielement standards (SMELS-I and -II); the results revealed all elements within ±3 Z-score.
Collapse
Affiliation(s)
| | - Mohammad Arif
- Nuclear Chemistry Division, Pakistan Institute of Nuclear Science, Islamabad, Pakistan
| | - Jamshed Hussain Zaidi
- Pakistan Institute of Nuclear Science and Technology, Nuclear Chemistry Division, P. O. Nilore, Islamabad, Pakistan
| |
Collapse
|
6
|
Wasim M. GammaLab: a suite of programs for k 0 -NAA and gamma-ray spectrum analysis. J Radioanal Nucl Chem 2010. [DOI: 10.1007/s10967-010-0562-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
7
|
Wasim M, Zaidi JH, Arif M. Use of synthetic multi-element standards (SMELS) in the quality control and method validation of k0-neutron activation analysis. RADIOCHIM ACTA 2010. [DOI: 10.1524/ract.2010.1697] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
8
|
Wasim M, Arif M, Zaidi JH, Anwar Y. Development and implementation of k0-INAA standardization at 10 MW Pakistan research reactor-1. RADIOCHIM ACTA 2009. [DOI: 10.1524/ract.2009.1657] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|