Gamma Spectrometry Study of Radioactivity in Some Types of Teas on the Local Ivorian Market

Konaté Issa; Oka N’Guessan Guy Leopold; Kouakou Melina Tryphose; Gogon Bogbé Douo Louis Huberson

doi:doi:10.11648/j.wjap.20251002.11

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Gamma Spectrometry Study of Radioactivity in Some Types of Teas on the Local Ivorian Market

Konaté Issa^*, Oka N’Guessan Guy Leopold, Kouakou Melina Tryphose, Gogon Bogbé Douo Louis Huberson

Published in World Journal of Applied Physics (Volume 10, Issue 2)

Received: 3 April 2025 Accepted: 27 April 2025 Published: 29 May 2025

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Abstract

Radioactivity is a natural phenomenon present in the environment in which we are permanently present. Thus, due to its presence in soil and water and its absorption by plants, radioactivity is found in foodstuffs such as tea. The latter comes from a tree, the tea plant, which is highly sensitive and vulnerable to climatic conditions. When infused, this tea drink, which is very common in Ivorian homes, is therefore likely to be a vector of radioactive contamination of the population. The objective of this work is to identify the presence of radionuclides in tea, evaluate their activity according to the duration of infusion and their impact on the health of consumers in order to develop a consumption methodology. During this study, six different brands of teas that are quite popular were collected on the local Ivorian market and infused in water. After analysis by the gamma spectrometry method, we were able to determine the specific activities of the radioelements detected in the brewed teas. The most abundant radioactive elements are Th232, U238, U235 and the activity values obtained are well below those recommended by UNSCEAR and the ICRP. These results tend to show that the Ivorian population is not at risk of consuming the tea within the preparation times recommended by the manufacturer, which are less than or equal to five (5) minutes.

Published in	World Journal of Applied Physics (Volume 10, Issue 2)
DOI	10.11648/j.wjap.20251002.11
Page(s)	35-40
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2025. Published by Science Publishing Group

Keywords

Radioactivity Teas, Gamma Spectrometry, Ivorian Local Market

References

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[2]	Frédéric Asimanana. Détermination des radionucléides dans les repas, Application aux arts culinaires de Madagascar. Afrique science 2014.
[3]	Briant Kall and al.. Contribution à l’étude de dose due à la radioactivité gamma du sol sur la rive de la baie des Français, Antsiranana, Madagascar. Afrique SCIENCE 11(1) (2015) 122 - 135 122 ISSN 1813-548X.
[4]	Cooper, R. J. and al.. A prototype High Purity Germanium detector for high resolution gamma-ray spectroscopy at high count rates, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2015, 795, 167-173.
[5]	Benoît Pirard. Study and validation of a gamma spectrometer for the measurement of the chemical composition of planetary surfaces, Application to a mission to Mercury, Doctoral thesis defended on December 18, 2006.
[6]	Thomas Marchais. Optimisation of gamma spectrometry measurements for uranium prospecting. Thesis defended publicly on May 28, 2019 community university grenoble alpes.
[7]	Issiaka Traore. Study and characterization of the response functions of Nuclear Trace Solid Detectors: Application to radon and neutron dosimetry. Thesis Defended on June 07, 2013.
[8]	Fabien Courtine. Experimental measurements and modelling by Monte-Carlo techniques. Thesis Defended publicly on March 9, 2007. Blaise Pascal University.
[9]	Julien Robert. Discover tea. May 2023. https://www.pairform.fr
[10]	Fillon Laetitia. Tea and metabolic syndrome. Thesis Defended publicly on Wednesday, January 22, 2014.
[11]	IRSN. Radionuclide sheet. Americium-241 and environment. 2001.
[12]	Galle P.. Toxics nucléaires, Paris, Masson (2nd edition). 1997.
[13]	UNSCEAR. Sources and Effects of Ionizing Radiation. Reportvol I et II 2008.
[14]	UNSCEAR (2000). Sources and Effects of Ionizing Radiation. Report to the general meeting, with Scientific annexes. New York: UN. 2000.
[15]	Guembou Shouop Cébastien J. Study of environmental samples by Gamma Spectrometry: the case of soils from campuses I and II of the University of Douala. Master of Science from the University of Douala. 2013.

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APA Style

Issa, K., Leopold, O. N. G., Tryphose, K. M., Huberson, G. B. D. L. (2025). Gamma Spectrometry Study of Radioactivity in Some Types of Teas on the Local Ivorian Market. World Journal of Applied Physics, 10(2), 35-40. https://doi.org/10.11648/j.wjap.20251002.11

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ACS Style

Issa, K.; Leopold, O. N. G.; Tryphose, K. M.; Huberson, G. B. D. L. Gamma Spectrometry Study of Radioactivity in Some Types of Teas on the Local Ivorian Market. World J. Appl. Phys. 2025, 10(2), 35-40. doi: 10.11648/j.wjap.20251002.11

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AMA Style

Issa K, Leopold ONG, Tryphose KM, Huberson GBDL. Gamma Spectrometry Study of Radioactivity in Some Types of Teas on the Local Ivorian Market. World J Appl Phys. 2025;10(2):35-40. doi: 10.11648/j.wjap.20251002.11

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@article{10.11648/j.wjap.20251002.11,
  author = {Konaté Issa and Oka N’Guessan Guy Leopold and Kouakou Melina Tryphose and Gogon Bogbé Douo Louis Huberson},
  title = {Gamma Spectrometry Study of Radioactivity in Some Types of Teas on the Local Ivorian Market
},
  journal = {World Journal of Applied Physics},
  volume = {10},
  number = {2},
  pages = {35-40},
  doi = {10.11648/j.wjap.20251002.11},
  url = {https://doi.org/10.11648/j.wjap.20251002.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.wjap.20251002.11},
  abstract = {Radioactivity is a natural phenomenon present in the environment in which we are permanently present. Thus, due to its presence in soil and water and its absorption by plants, radioactivity is found in foodstuffs such as tea. The latter comes from a tree, the tea plant, which is highly sensitive and vulnerable to climatic conditions. When infused, this tea drink, which is very common in Ivorian homes, is therefore likely to be a vector of radioactive contamination of the population. The objective of this work is to identify the presence of radionuclides in tea, evaluate their activity according to the duration of infusion and their impact on the health of consumers in order to develop a consumption methodology. During this study, six different brands of teas that are quite popular were collected on the local Ivorian market and infused in water. After analysis by the gamma spectrometry method, we were able to determine the specific activities of the radioelements detected in the brewed teas. The most abundant radioactive elements are Th232, U238, U235 and the activity values obtained are well below those recommended by UNSCEAR and the ICRP. These results tend to show that the Ivorian population is not at risk of consuming the tea within the preparation times recommended by the manufacturer, which are less than or equal to five (5) minutes.
},
 year = {2025}
}

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TY  - JOUR
T1  - Gamma Spectrometry Study of Radioactivity in Some Types of Teas on the Local Ivorian Market

AU  - Konaté Issa
AU  - Oka N’Guessan Guy Leopold
AU  - Kouakou Melina Tryphose
AU  - Gogon Bogbé Douo Louis Huberson
Y1  - 2025/05/29
PY  - 2025
N1  - https://doi.org/10.11648/j.wjap.20251002.11
DO  - 10.11648/j.wjap.20251002.11
T2  - World Journal of Applied Physics
JF  - World Journal of Applied Physics
JO  - World Journal of Applied Physics
SP  - 35
EP  - 40
PB  - Science Publishing Group
SN  - 2637-6008
UR  - https://doi.org/10.11648/j.wjap.20251002.11
AB  - Radioactivity is a natural phenomenon present in the environment in which we are permanently present. Thus, due to its presence in soil and water and its absorption by plants, radioactivity is found in foodstuffs such as tea. The latter comes from a tree, the tea plant, which is highly sensitive and vulnerable to climatic conditions. When infused, this tea drink, which is very common in Ivorian homes, is therefore likely to be a vector of radioactive contamination of the population. The objective of this work is to identify the presence of radionuclides in tea, evaluate their activity according to the duration of infusion and their impact on the health of consumers in order to develop a consumption methodology. During this study, six different brands of teas that are quite popular were collected on the local Ivorian market and infused in water. After analysis by the gamma spectrometry method, we were able to determine the specific activities of the radioelements detected in the brewed teas. The most abundant radioactive elements are Th232, U238, U235 and the activity values obtained are well below those recommended by UNSCEAR and the ICRP. These results tend to show that the Ivorian population is not at risk of consuming the tea within the preparation times recommended by the manufacturer, which are less than or equal to five (5) minutes.

VL  - 10
IS  - 2
ER  -

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Author Information

Konaté Issa

Laboratory of Material, Environmental and Solar Energy Sciences (LASMES) Nuclear Physics and Radiation Protection Team, Félix Houphouët Boigny University, Abidjan-Cocody, Côte d'Ivoire

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Oka N’Guessan Guy Leopold

Institute for New Energies Research (IREN), University Nangui Abrogoua, Abidjan, Côte d'Ivoire

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Kouakou Melina Tryphose

Laboratory of Material, Environmental and Solar Energy Sciences (LASMES) Nuclear Physics and Radiation Protection Team, Félix Houphouët Boigny University, Abidjan-Cocody, Côte d'Ivoire

Contact Email
Gogon Bogbé Douo Louis Huberson

Laboratory of Material, Environmental and Solar Energy Sciences (LASMES) Nuclear Physics and Radiation Protection Team, Félix Houphouët Boigny University, Abidjan-Cocody, Côte d'Ivoire

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APA Style

Issa, K., Leopold, O. N. G., Tryphose, K. M., Huberson, G. B. D. L. (2025). Gamma Spectrometry Study of Radioactivity in Some Types of Teas on the Local Ivorian Market. World Journal of Applied Physics, 10(2), 35-40. https://doi.org/10.11648/j.wjap.20251002.11

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ACS Style

Issa, K.; Leopold, O. N. G.; Tryphose, K. M.; Huberson, G. B. D. L. Gamma Spectrometry Study of Radioactivity in Some Types of Teas on the Local Ivorian Market. World J. Appl. Phys. 2025, 10(2), 35-40. doi: 10.11648/j.wjap.20251002.11

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AMA Style

Issa K, Leopold ONG, Tryphose KM, Huberson GBDL. Gamma Spectrometry Study of Radioactivity in Some Types of Teas on the Local Ivorian Market. World J Appl Phys. 2025;10(2):35-40. doi: 10.11648/j.wjap.20251002.11

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@article{10.11648/j.wjap.20251002.11,
  author = {Konaté Issa and Oka N’Guessan Guy Leopold and Kouakou Melina Tryphose and Gogon Bogbé Douo Louis Huberson},
  title = {Gamma Spectrometry Study of Radioactivity in Some Types of Teas on the Local Ivorian Market
},
  journal = {World Journal of Applied Physics},
  volume = {10},
  number = {2},
  pages = {35-40},
  doi = {10.11648/j.wjap.20251002.11},
  url = {https://doi.org/10.11648/j.wjap.20251002.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.wjap.20251002.11},
  abstract = {Radioactivity is a natural phenomenon present in the environment in which we are permanently present. Thus, due to its presence in soil and water and its absorption by plants, radioactivity is found in foodstuffs such as tea. The latter comes from a tree, the tea plant, which is highly sensitive and vulnerable to climatic conditions. When infused, this tea drink, which is very common in Ivorian homes, is therefore likely to be a vector of radioactive contamination of the population. The objective of this work is to identify the presence of radionuclides in tea, evaluate their activity according to the duration of infusion and their impact on the health of consumers in order to develop a consumption methodology. During this study, six different brands of teas that are quite popular were collected on the local Ivorian market and infused in water. After analysis by the gamma spectrometry method, we were able to determine the specific activities of the radioelements detected in the brewed teas. The most abundant radioactive elements are Th232, U238, U235 and the activity values obtained are well below those recommended by UNSCEAR and the ICRP. These results tend to show that the Ivorian population is not at risk of consuming the tea within the preparation times recommended by the manufacturer, which are less than or equal to five (5) minutes.
},
 year = {2025}
}

Copy | Download

TY  - JOUR
T1  - Gamma Spectrometry Study of Radioactivity in Some Types of Teas on the Local Ivorian Market

AU  - Konaté Issa
AU  - Oka N’Guessan Guy Leopold
AU  - Kouakou Melina Tryphose
AU  - Gogon Bogbé Douo Louis Huberson
Y1  - 2025/05/29
PY  - 2025
N1  - https://doi.org/10.11648/j.wjap.20251002.11
DO  - 10.11648/j.wjap.20251002.11
T2  - World Journal of Applied Physics
JF  - World Journal of Applied Physics
JO  - World Journal of Applied Physics
SP  - 35
EP  - 40
PB  - Science Publishing Group
SN  - 2637-6008
UR  - https://doi.org/10.11648/j.wjap.20251002.11
AB  - Radioactivity is a natural phenomenon present in the environment in which we are permanently present. Thus, due to its presence in soil and water and its absorption by plants, radioactivity is found in foodstuffs such as tea. The latter comes from a tree, the tea plant, which is highly sensitive and vulnerable to climatic conditions. When infused, this tea drink, which is very common in Ivorian homes, is therefore likely to be a vector of radioactive contamination of the population. The objective of this work is to identify the presence of radionuclides in tea, evaluate their activity according to the duration of infusion and their impact on the health of consumers in order to develop a consumption methodology. During this study, six different brands of teas that are quite popular were collected on the local Ivorian market and infused in water. After analysis by the gamma spectrometry method, we were able to determine the specific activities of the radioelements detected in the brewed teas. The most abundant radioactive elements are Th232, U238, U235 and the activity values obtained are well below those recommended by UNSCEAR and the ICRP. These results tend to show that the Ivorian population is not at risk of consuming the tea within the preparation times recommended by the manufacturer, which are less than or equal to five (5) minutes.

VL  - 10
IS  - 2
ER  -

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