Performance of flowing sample neutron activation analysis technique for determination of multi-elemental content

2013 ◽  
Vol 299 (1) ◽  
pp. 89-93 ◽  
Author(s):  
Mohamed Soliman ◽  
Nader M. A. Mohamed ◽  
A. M. Osman ◽  
A. M. Abdel-Monem
2017 ◽  
Vol 100 (4) ◽  
pp. 871-880 ◽  
Author(s):  
Urška Kropf ◽  
Vekoslava Stibilj ◽  
Radojko Jaćimović ◽  
Jasna Bertoncelj ◽  
Terezija Golob ◽  
...  

Abstract The botanical origin of seven types of Slovenian honey was investigated by analysis of their elemental content using k0-instrumental neutron activation analysis. A total of 28 representative samples were collected from beekeepers all over Slovenia in 2 consecutive years. Nineteen of the 37 elements measured were present in amounts above their LOD. The present study suggests that the determination of only alkali elements might be sufficient for the classification of Slovenian honeys according to their botanical origin. Linden and multifloral honeys can be differentiated on the basis of Na content. The differentiation of forest, spruce, and fir honeys is possible on the basis of differences in Cs, K, and Rb content. The difference between Na and Rb content can be used as a discriminating tool between light and dark honeys, because light honeys (black locust, linden, and multifloral) contained more Na than Rb, whereas it was the opposite for dark honeys (chestnut, forest, spruce, and fir). Statistically significant correlations were found between K and Rb and between K and Cs content. This study represents a considerable step in filling the knowledge gap concerning both the determination of elements present in low concentrations and the botanical origin of Slovenian honey.


2014 ◽  
Vol 4 (3) ◽  
pp. 36-42
Author(s):  
Van Doanh Ho ◽  
Quang Thien Tran ◽  
Thi Sy Nguyen ◽  
Nhi Dien Nguyen

A rapid neutron activation analysis technique for determination of the concentration of selenium in biological materials using short-lived radionuclide 77mSe (half-life = 17.4 seconds) has been developed at Dalat Nuclear Research Institute (DNRI). The technique is very simple and rapid. It involves irradiation of a sample for 20 s, decay for 20 s and counting for 20 s. The accuracy of the method has been evaluated by analyzing a number of biological standard reference materials of varied selenium levels. An agreement between measured and certified values was acceptable in regarding to the deviation of the above mentioned two values within 8 percent. The result shows that the utilization of short-lived radionuclide 77mSe is more useful in comparison with long-lived radionuclide 75Se (half-life = 120 days). In addition, it is suggested that a further study for cyclic irradiations should be done in order to enhance the detection limit of the determination of the short-lived radionuclide 77mSe.


2012 ◽  
Vol 295 (1) ◽  
pp. 245-254 ◽  
Author(s):  
Mohamed Soliman ◽  
Nader M. A. Mohamed ◽  
M. A. Abd El-Samad ◽  
A. M. Abdel-Monem ◽  
Ashraf Hamid ◽  
...  

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