Applications of Neutron Activation Analysis to Environmental and Biomedical Studies

1972 ◽  
Vol 16 ◽  
pp. 10-18
Author(s):  
H. R. Lukens ◽  
J. John
Keyword(s):  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Gamma Ray ◽  
Gamma Ray Spectrometry ◽  
Neutron Sources ◽  
The Past ◽  
Ultra Trace ◽  
Number Of Publications

The field of neutron activation analysis (NAA) has expanded significantly in the past decade, with the number of publications increasing from approximately 100 to more than 1000 per year. This phenomenon correlates with the greater availability of useful neutron sources, improvements in gamma-ray spectrometry equipment, and a rapid increase in successful NAA applications. A significant number of applications have been in the biomedical and environmental fields, especially in cases where elements must be measured at ultra-trace levels.

Comparison of Adhesive Tapes by Neutron Activation Analysis

1967 ◽  
Vol 50 (2) ◽  
pp. 371-376
Author(s):  
J E Scott ◽  
C M Hoffman ◽  
M J Pro ◽  
H L Schlesinger
Keyword(s):  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Elemental Composition ◽  
Gamma Ray ◽  
Gamma Ray Spectrometry

Abstract Adhesive tapes were compared by nondestructive gamma-ray spectrometry. Results show that neutron activation analysis can he used to characterize tapes through their elemental composition. Differences between manufacturers as well as hatch-tobatch and in-batch variations can be measured by neutron activation analysis.

scholarly journals Study on elements concentrations on seabird feathers by instrumental neutron activation analysis.

2019 ◽  
Vol 7 (2A) ◽  
Author(s):  
Carolina Yume Sawamura Theophilo ◽  
Rubens Cesar Lopes Figueira ◽  
Fernanda Imperatrice Colabuono ◽  
Rosalinda Carmela Montone ◽  
Edson Gonçalves Moreira
Keyword(s):  
Neutron Activation Analysis ◽  
Instrumental Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Gamma Ray ◽  
Environmental Changes ◽  
Trophic Levels ◽  
Gamma Ray Spectrometry ◽  
Longline Fisheries ◽  
Instrumental Neutron Activation

Seabirds are very sensitive to environmental changes and due to their large longevity they are also sensitive to cumulative impacts. These birds usually occupy the higher trophic levels. White-chinned petrel (Procellaria aequinoctialis) and black-browed albatross (Thalassarche melanophris) are Procellariiformes, which is a seabird order, composed of 4 families. In the last years, researches are being done and actions are being taken to reduce the mortality of albatrosses and petrels caused by human activities. Due to the great ecological importance of these birds and the developed work with Procellariiformes, this study purpose was to quantify the Br, Cl, Cu, K, Mg, Mn, Na and V elements in white-chinned petrel and black-browed albatross feathers. Bird specimens were killed accidentally by pelagic longline fisheries operating off southern Brazil. Feathers were cleaned with acetone and then milled in a cryogenic mill. Instrumental Neutron Activation Analysis (INAA) was used for quantification of the element concentrations and measurements of induced activities were performed in a High Purity Germanium (HPGe) detector for gamma ray spectrometry. The obtained results on feathers showed that concentrations in these birds are not higher than others studies with the same species and, with exception of Br, there are no significant differences between elements mean concentrations in the two seabirds.

Activation Analysis of Physical Evidence Connected with Illicit Distilleries

1965 ◽  
Vol 48 (3) ◽  
pp. 459-471
Author(s):  
M Pro ◽  
H Schlesinger ◽  
M Cohan
Keyword(s):  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Nuclear Reactor ◽  
Gamma Ray ◽  
Gamma Ray Spectrometry ◽  
Physical Evidence

Abstract Neutron-activation analysis has been employed to compare “moonshine,” soil, and paint collected as physical evidence during the investigation of illicit distilleries. These materials were irradiated in a DASA-TRIGA nuclear reactor and the induced radionuclides were identified by nondestructive gamma-ray spectrometry. The results obtained indicate the technique can be employed to compare these materials. The findings have been accepted for use in court as evidence.

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