Assessment of Radiological and Chemical Pollutants in the Coastal Marine Environment along Suez and Aqaba Gulfs, Egypt
Mohamed Elsayed Mohamed Shahin;
Abstract
The present study highlights and evaluate radioactivity levels of 238U,
232Th and 40K, radiological hazard indices, physiochemical characteristics
of seawater and concentration of heavy elements in soil, plants, shore
sediment samples, and algae samples collected along and around the
coastline of Aqaba and Suez Gulfs from 54 sampling points during 2016.
Measurements of the activity concentrations of 238U, 232Th and 40K Bq/kg
(in dry weight) of the collected samples were carried out using gamma ray
spectrometry based on a high-pure germanium coaxial detector (HPGe).
Heavy Metals in seawater, shore sediment, and algae samples were
determined using ICP-OEs. The mean activities for 238U, 232Th and 40K
were found to be within the average international radioactivity levels
which are 35, 35,5 and 370 Bq/kg. The results for the measurements of
natural radioactivity revealed that the mean average of absorbed dose rate
(D), annual effective dose rate (mSvy-1), radium equivalent (Raeq),
external and internal hazard indices (Hex, Hin) and cancer risk were
calculated and compared with the worldwide averages. The recorded and
calculated values were lower than the acceptable limits published in the
different localities around the world. TF of 238U, 232Th and 40K were
calculated for algae samples collected from some sites. The average values
of TF were 0.19, 0.13, and 2.65 for 238U, 232Th and 40K, respectively. The
TF for 40K was greater than unity, which means that 40K was bio
232Th and 40K, radiological hazard indices, physiochemical characteristics
of seawater and concentration of heavy elements in soil, plants, shore
sediment samples, and algae samples collected along and around the
coastline of Aqaba and Suez Gulfs from 54 sampling points during 2016.
Measurements of the activity concentrations of 238U, 232Th and 40K Bq/kg
(in dry weight) of the collected samples were carried out using gamma ray
spectrometry based on a high-pure germanium coaxial detector (HPGe).
Heavy Metals in seawater, shore sediment, and algae samples were
determined using ICP-OEs. The mean activities for 238U, 232Th and 40K
were found to be within the average international radioactivity levels
which are 35, 35,5 and 370 Bq/kg. The results for the measurements of
natural radioactivity revealed that the mean average of absorbed dose rate
(D), annual effective dose rate (mSvy-1), radium equivalent (Raeq),
external and internal hazard indices (Hex, Hin) and cancer risk were
calculated and compared with the worldwide averages. The recorded and
calculated values were lower than the acceptable limits published in the
different localities around the world. TF of 238U, 232Th and 40K were
calculated for algae samples collected from some sites. The average values
of TF were 0.19, 0.13, and 2.65 for 238U, 232Th and 40K, respectively. The
TF for 40K was greater than unity, which means that 40K was bio
Other data
| Title | Assessment of Radiological and Chemical Pollutants in the Coastal Marine Environment along Suez and Aqaba Gulfs, Egypt | Other Titles | تقييم الملوثات الكيميائية والإشعاعية فى البيئة البحرية الساحلية على طول خليجى السويس والعقبة، مصر | Authors | Mohamed Elsayed Mohamed Shahin | Issue Date | 2018 |
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