Determination of cobalt, molybdenum, and nickel in hydrodesulfurization catalysts by neutron capture .gamma.-ray spectrometry and neutron activation analysis

1976 ◽  
Vol 48 (13) ◽  
pp. 1969-1974 ◽  
Author(s):  
Michel. Heurtebise ◽  
Hector. Buenafama ◽  
J. A. Lubkowitz
Keyword(s):  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Neutron Capture ◽  
Gamma Ray ◽  
Gamma Ray Spectrometry ◽  
Hydrodesulfurization Catalysts

Techniques of field gamma-ray spectrometry

1981 ◽  
Vol 44 (336) ◽  
pp. 391-398 ◽  
Author(s):  
J. Cassidy
Keyword(s):  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Late Stage ◽  
Quantitative Method ◽  
Gamma Ray ◽  
Gamma Ray Spectrometry ◽  
Igneous Intrusions ◽  
Decay Series

AbstractField gamma-ray spectrometry is a rapid and effective quantitative method of mapping variations of radioelements within igneous intrusions. A field procedure for radioelement mapping demonstrates the value of the method to studies of late-stage magmatic processes during the emplacement of granite intrusions and the determination of their present-day heat productivities. Methods and problems of instrument calibration using both natural and artificial sources are discussed. Calibration based on neutron activation analysis of samples from natural outcrops achieves results comparable with those obtained using artificial sources and has the advantage that it relates directly to field conditions; furthermore it enables secular disequilibrium in the uranium and thorium decay series to be recognized.

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 Determination of Arsenic and Antimony in "Tatara" Steel Making Sample by Neutron Activation Analysis Combined with Multiple Gamma-ray Detection

2008 ◽  
Vol 94 (9) ◽  
pp. 345-350 ◽  
Author(s):  
Shunya Inoshita ◽  
Shogo Suzuki ◽  
Yukiko Okada ◽  
Masahiko Kato ◽  
Shoji Hirai ◽  
...  
Keyword(s):  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Gamma Ray ◽  
Steel Making

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.

Sign in / Sign up

Export Citation Format

Share Document