Assessment of Natural Radioactivity and Radiological Hazards in Dredged Sediments from Damietta Harbor, Egypt

Aya Ali; A. El-Azab; S. Alashrah; S. Makhluf; A. El-Taher

doi:10.1134/S1066362225060256

Assessment of Natural Radioactivity and Radiological Hazards in Dredged Sediments from Damietta Harbor, Egypt

Aya Ali
, A. El-Azab
, S. Alashrah
, S. Makhluf
, A. El-Taher

Research output: Contribution to journal › Article › peer-review

Abstract

Abstract: 50 sediment samples were taken from three basins 600 m far from the beach in Egypt (Damietta harbour). The samples were thoroughly analyzed to calculate the natural radioactivity levels measured by gamma-ray spectrometry using a NaI (Tl) detector. The of specific activity varied from 10 ± 0.5 to 23 ± 1.1 with an average of 14.1 ± 1.2 Bq kg^–1, from 7 ± 0.6 to 59 ± 3 with an average of 18.5 ± 1.3 Bq kg^–1, and from 108 ± 5 to 402 ± 23 with an average of 287 ± 15 Bq kg^–1 for ²²⁶Ra, ²³²Th, and ⁴⁰K, respectively. These levels are lower than the worldwide average values. Hazardous radiation parameters such as radium equivalent, annual dose, and external hazards were estimated and compared to the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) recommended levels. The results showed that Damietta harbour sediments are safe in terms of natural radioactivity.

Original language	English
Pages (from-to)	970-978
Number of pages	9
Journal	Radiochemistry
Volume	67
Issue number	6
DOIs	https://doi.org/10.1134/S1066362225060256
State	Published - Dec 2025
Externally published	Yes

Bibliographical note

Publisher Copyright:
© Pleiades Publishing, Ltd. 2025.

Keywords

Damietta harbour sediments
environmental radiation nonitoring
gamma-ray spectrometry
natural radioactivity
radiological hazard assessment

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10.1134/S1066362225060256

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title = "Assessment of Natural Radioactivity and Radiological Hazards in Dredged Sediments from Damietta Harbor, Egypt",

abstract = "Abstract: 50 sediment samples were taken from three basins 600 m far from the beach in Egypt (Damietta harbour). The samples were thoroughly analyzed to calculate the natural radioactivity levels measured by gamma-ray spectrometry using a NaI (Tl) detector. The of specific activity varied from 10 ± 0.5 to 23 ± 1.1 with an average of 14.1 ± 1.2 Bq kg–1, from 7 ± 0.6 to 59 ± 3 with an average of 18.5 ± 1.3 Bq kg–1, and from 108 ± 5 to 402 ± 23 with an average of 287 ± 15 Bq kg–1 for 226Ra, 232Th, and 40K, respectively. These levels are lower than the worldwide average values. Hazardous radiation parameters such as radium equivalent, annual dose, and external hazards were estimated and compared to the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) recommended levels. The results showed that Damietta harbour sediments are safe in terms of natural radioactivity.",

keywords = "Damietta harbour sediments, environmental radiation nonitoring, gamma-ray spectrometry, natural radioactivity, radiological hazard assessment",

author = "Aya Ali and A. El-Azab and S. Alashrah and S. Makhluf and A. El-Taher",

note = "Publisher Copyright: {\textcopyright} Pleiades Publishing, Ltd. 2025.",

year = "2025",

month = dec,

doi = "10.1134/S1066362225060256",

language = "אנגלית",

volume = "67",

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AU - Ali, Aya

AU - El-Azab, A.

AU - Alashrah, S.

AU - Makhluf, S.

AU - El-Taher, A.

N1 - Publisher Copyright: © Pleiades Publishing, Ltd. 2025.

PY - 2025/12

Y1 - 2025/12

N2 - Abstract: 50 sediment samples were taken from three basins 600 m far from the beach in Egypt (Damietta harbour). The samples were thoroughly analyzed to calculate the natural radioactivity levels measured by gamma-ray spectrometry using a NaI (Tl) detector. The of specific activity varied from 10 ± 0.5 to 23 ± 1.1 with an average of 14.1 ± 1.2 Bq kg–1, from 7 ± 0.6 to 59 ± 3 with an average of 18.5 ± 1.3 Bq kg–1, and from 108 ± 5 to 402 ± 23 with an average of 287 ± 15 Bq kg–1 for 226Ra, 232Th, and 40K, respectively. These levels are lower than the worldwide average values. Hazardous radiation parameters such as radium equivalent, annual dose, and external hazards were estimated and compared to the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) recommended levels. The results showed that Damietta harbour sediments are safe in terms of natural radioactivity.

AB - Abstract: 50 sediment samples were taken from three basins 600 m far from the beach in Egypt (Damietta harbour). The samples were thoroughly analyzed to calculate the natural radioactivity levels measured by gamma-ray spectrometry using a NaI (Tl) detector. The of specific activity varied from 10 ± 0.5 to 23 ± 1.1 with an average of 14.1 ± 1.2 Bq kg–1, from 7 ± 0.6 to 59 ± 3 with an average of 18.5 ± 1.3 Bq kg–1, and from 108 ± 5 to 402 ± 23 with an average of 287 ± 15 Bq kg–1 for 226Ra, 232Th, and 40K, respectively. These levels are lower than the worldwide average values. Hazardous radiation parameters such as radium equivalent, annual dose, and external hazards were estimated and compared to the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) recommended levels. The results showed that Damietta harbour sediments are safe in terms of natural radioactivity.

KW - Damietta harbour sediments

KW - environmental radiation nonitoring

KW - gamma-ray spectrometry

KW - natural radioactivity

KW - radiological hazard assessment

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AN - SCOPUS:105029580948

SN - 1066-3622

VL - 67

SP - 970

EP - 978

JO - Radiochemistry

JF - Radiochemistry

IS - 6

ER -

Assessment of Natural Radioactivity and Radiological Hazards in Dredged Sediments from Damietta Harbor, Egypt

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