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Date Published: 30/09/2020
Online Published: 30/09/2020
Abstract Views: 147
Views PDF: 90
DOI: https://doi.org/10.54607/hcmue.js.17.9.2735(2020)
Issue
Vol. 17 No. 9 (2020)
Section
Articles
How to Cite
Trương , H. N. T., Huỳnh , T. Y. H., & Trương , T. H. L. (2020). A RESEARCH METHOD FOR IMPROVING PRECISION IN RADIOACTIVE ANALYSIS OF ASHED PLANT SAMPLES. HCMUE Journal of Science, 17(9), 1675. https://doi.org/10.54607/hcmue.js.17.9.2735(2020)

A RESEARCH METHOD FOR IMPROVING PRECISION IN RADIOACTIVE ANALYSIS OF ASHED PLANT SAMPLES

Hữu Ngân Thy Trương , Thị Yến Hồng Huỳnh , Thị Hồng Loan Trương

Main Article Content

Abstract

 

In this work, radioactive isotopes of 238U, 232Th, 40K in ash samples of plant using gamma spectrometer HPGe are analyzed. In analyzing environmental radioactive samples on a gamma spectrometer, low energy peaks are always difficult to handle and cause large errors due to the influence of large background at the energy peak. To improve the accuracy of the analytical results for 238U and 232Th, the separation of isotope 40K in ash samples by chemical method is used. The sample for separating 40K and the sample for containing 40K are surveyed on the gamma spectrometer. The analytical results of 238U, 232Th, and 40K before and after separation are compared. After that, the effect from the Compton continuum of 40K on the full energy peaks of 238U and 232Th in ash samples of plant is evaluated.

 

 

Keywords

Chemical separation, Compton continuum, radioactivity, gamma spectrum

Article Details

References

Changizi, V., Jafarpoor, Z., & Naseri, M. (2010). “Measurement of 226Ra, 228Ra, 137Cs and 40K in edible parts of two types of leafy vegetables cultivated in Tehran province-Iran and resultant annual ingestion radiation dose”. Iran. J. Radiat. Res., 8(2), 103-110.
Ferdous, M. J., Ahmed S., & Begum A. (2013). “Measurement of 238U, 232Th, 228Ra, 226Ra and 40K activities in vegetable samples and dose assessment for adult population of Bangladesh”, Bangladesh Journal of Physics, 13, 65-75.
Luu, T. B., Luu N. Q., Nguyen N. V., Luu V. H., Tran T. V., Luu V. D., Nguyen C. D., Ha T. L., Nguyen T. S., Nguyen T. K, Dang T. L., Nguyen T. M., Nguyen V. T., Khong N. K., Truong T. H. L., Truong H. N. T., & Thai M. P. (2016). “Research on improving the sensitivity of measurement of the concentration of radioactive isotopes in food in high-resolution gamma spectrometer systems”, Journal of Science VNU, 1, 21-29.
Luu, T. B., Truong T. H. L., Truong H. N. Thy, Huynh T. Y. H., Vu N. B., & Luu N. Q. (2016). “Determining the concentration of radioactive isotope 238U in food samples by high resolution gamma spectrometer”. Journal of Ho Chi Minh City University of Pedagogy, 6, 12-23.
National standard TCVN 8662: 2011 on soil quality – “Methods of determining easily digestive potassium”, 2011.
Robison, W. L., Hamilton, T. F., C. L. Conrado, & Kehl, S. (2006), “Uptake of Cesium-137 by leafy vegetables and grains from calcareous soils”, Lawrence Livermore National Laboratory, Livermore, CA, United States of America, IAEA-TECDOC-1497.
Saeed, M. A., Wahab, N. A. A., Hossain, I., Ahmed, R., Abdullah, H. Y., Ramli, A. T., & Tahir, B. A. (2011), “Measuring radioactivity level in various types of rice using hyper pure germanium (HPGe) detector”, International Journal of the Physical Sciences, 6(32), 7335-7340.