A gamma-ray spectrometry approach to field separation of illuviation-type WRB reference soil groups in northern Thailand

2010 ◽  
Vol 174 (4) ◽  
pp. 536-544 ◽  
Author(s):  
Ulrich Schuler ◽  
Petra Erbe ◽  
Mehdi Zarei ◽  
Wanida Rangubpit ◽  
Adichat Surinkum ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Gamma Ray Spectrometry ◽  
Northern Thailand ◽  
Reference Soil ◽  
Field Separation ◽  
Soil Groups

NATURAL RADIONUCLIDES IN AGRICULTURAL PLANTS FROM NORTHERN THAILAND

2019 ◽  
Vol 184 (3-4) ◽  
pp. 397-399
Author(s):  
R Kritsananuwat ◽  
C Kranrod ◽  
S Chanyotha ◽  
T Ploykrathok ◽  
P Sriploy
Keyword(s):  
Gamma Ray ◽  
Natural Radionuclides ◽  
Northern Region ◽  
Soil Samples ◽  
Gamma Ray Spectrometry ◽  
Northern Thailand ◽  
Activity Concentrations ◽  
Plant Samples ◽  
Spectrometry Technique ◽  
Agricultural Plants

Abstract Thailand is predominantly an agricultural country. The Northern Region occupies the second largest cultivated land area in the country. To establish baseline data for future environmental monitoring, seventy-nine plant samples including vegetables, fruits and tobaccos and their relevant soils were collected from the major plantation zones of Northern Thailand. Activity concentrations of natural radionuclides in the samples were determined using gamma-ray spectrometry technique. The median activity concentrations of 226Ra and 228Ra in the soil samples were higher than worldwide value, while as those of 40K were comparable with worldwide value. There was a large variation and non-uniform distribution in the soil samples. The activity concentrations of 226Ra, 228Ra and 40K in the plant samples varied widely within plants and between species and were very low compared to their relevant soils. A decreasing trend of their activity concentration has been observed in the order leaf > stem > rhizome/root (as found in galangal); and leaf > stalk/stem (as found in lemongrass).

Gamma-Ray Spectrometric Analysis of Some Trace Elements in the Human Articular Disc of the Mandible

1963 ◽  
Vol 03 (02) ◽  
pp. 175-182 ◽  
Author(s):  
Bo Bergman ◽  
Rune Söremark
Keyword(s):  
Trace Elements ◽  
Neutron Activation ◽  
Quantitative Data ◽  
Thermal Neutron Flux ◽  
Gamma Ray ◽  
Dry Weight ◽  
Gamma Ray Spectrometry ◽  
Spectrometric Analysis ◽  
Articular Disc ◽  
Group Separation

SummaryBy means of neutron activation and gamma-ray spectrometry the concentrations in the human mandibular articular disc of the following elements have been determined: Na, Mn, Cu, Zn, Rb, Sr, Cd, W, and Au. The discs were obtained at necropsy from seven men and nine women, ranging in age from 56 to 71 years.The activation was carried out in a thermal neutron flux of about 1.7 XlO12 neutrons × cm−2 × sec.−1 for about 20 hours. A chemical group separationwas performed before the gamma-ray spectrometry. Quantitative data based on the dry weight of the cartilage samples were obtained by comparing the photo-peak area of the identified elements with those of appropriate standards.

Gamma Ray Spectrometry Assay Results of 242Pu Samples at the Chemistry and Metallurgy Research Facility

2019 ◽  
Author(s):  
Steven Charles Myers ◽  
Ning Xu ◽  
Jung Ho Rim ◽  
Georgiana Marie Vigil
Keyword(s):  
Gamma Ray ◽  
Gamma Ray Spectrometry ◽  
Research Facility

Inverting airborne gamma-ray spectrometry data of Maricá calibration range, Brazil

2019 ◽  
Author(s):  
Jessica Weihermann ◽  
Saulo Oliveira ◽  
Francisco Ferreira ◽  
Adalene Silva
Keyword(s):  
Gamma Ray ◽  
Gamma Ray Spectrometry
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