95/03595 Automated system for neutron activation analysis determination of short lived isotopes at the Dow Chemical Company's TRIGA research reactor

1995 ◽  
Vol 36 (4) ◽  
pp. 261
Keyword(s):  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Research Reactor ◽  
Automated System ◽  
Analysis Determination

scholarly journals Determination of trace elements in some fruits collected in Vietnam and Korea by Neutron Activation Analysis on Dalat and HANARO research reactors

2015 ◽  
Vol 5 (4) ◽  
pp. 23-29
Author(s):  
Thi Sy Nguyen ◽  
Manh Dung Ho ◽  
Van Doanh Ho ◽  
Quang Thien Tran ◽  
Sam Chung Yong
Keyword(s):  
Trace Elements ◽  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Research Reactor ◽  
Standard Samples ◽  
Long Time ◽  
Polyethylene Bags ◽  
Mn Concentrations

The k0-based neutron activation analysis (k0-NAA) has been applied for determination of trace multi-element in 5 fruits: Orange, tomato, persimmon, pear and apple. The samples were collected in Vietnam and Korea, and dried-frozen in laboratory at a temperature of -650C, weighed approximately 50 mg or 100 mg each sample, and put in clean polyethylene bags for short and long time irradiations, respectively. The NIST-1547 (Peach Leaves) and IAEA-V-10 (Hay Powder) were used for the purpose of quality control. Both analytical and standard samples were irradiated in the 500 kW Dalat research reactor (Vietnam) and the 20 MW HANARO research reactor (Korea). Concentration of 16 elements: Al, As, Au, Br, Ca, Cl, Co, Eu, Fe, K, La, Mg, Mn, Na, Rb and Zn were determined. By comparison the concentrations of trace elements in the investigated Vietnam and Korea’s fruits, revealed that they are mostly similar between two places. However, the Ca concentration in orange from Vietnam was approximately 2.5 times higher than that one from Korea, whereas the Ca concentration in pear from Vietnam was approximately 21 times lower than that one from Korea. The Mn concentrations in all of fruits that collected in Vietnam were mostly higher than those collected in Korea, ranging between 1.4 to 2.2 times.

scholarly journals Determination of Cobalt in Seawater Using Neutron Activation Analysis after Preconcentration by Adsorption onto γ-MnO2 Nanomaterial

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Van-Phuc Dinh ◽  
Ngoc-Chung Le ◽  
Ngoc-Tuan Nguyen ◽  
Quang-Thien Tran ◽  
Van-Dong Nguyen ◽  
...  
Keyword(s):  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Research Reactor ◽  
Nuclear Research ◽  
Adsorption Efficiency ◽  
Experiment Data ◽  
Factors Affecting ◽  
Nuclear Research Reactor

The γ-MnO2 nanomaterial has been used to adsorb cobalt in the seawater at Phan Thiet City, Binh Thuan Province, Vietnam. Its concentration is determined by using the neutron activation analysis (NAA) method at the Dalat nuclear research reactor. Factors affecting the uptake of cobalt on the γ-MnO2 material such as the pH, adsorption time, and initial cobalt(II) concentration are investigated. The irradiated experiment data are calculated using the K0-Dalat program. The results obtained show that the trace dissolved cobalt in Phan Thiet seawater is found equal to 0.25 ± 0.04 μg/L (n=5, P=95%) with the adsorption efficiency being higher than 95% (n=4, P=95%).

scholarly journals Redox substoichiometry in neutron activation analysis - Determination of antimony in metallic tin -

RADIOISOTOPES ◽  
1980 ◽  
Vol 29 (12) ◽  
pp. 590-593 ◽  
Author(s):  
Tomihisa KAMBARA ◽  
Junsuke SUZUKI ◽  
Hiroe YOSHIOKA ◽  
Toshio NAKAMURA
Keyword(s):  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Analysis Determination
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