Measurements of natural radioactivity level in black sand and sediment samples of the Temsah Lake beach in Suez Canal region in Egypt

Abstract

The level of natural radioactivity in 20 black sand and 20 sediment samples collected from Temsah Lake beaches of Suez Canal district, Egypt was investigated. The gamma-ray spectrometry system with hyperpure germanium (HPGe) detector has been used to determined radioactivity concentrations. Mathematical model is used to estimate the activity concentrations of 222 Rn in the air with the activities of 226 Ra. The activity concentrations of the sediment and black sand samples range from 4.29 ± 1.66 to 30.06 ± 8.80 and 4.29 ± 0.68 to 18.52 ± 5.22 Bq/kg) for 226 Ra. The ranges of radioactivity concentration of 232 Th vary from 6.69 ± 1.54 to 39.24 ± 9.80 and 4.56 ± 1.07 to 18.65 ± 5.27 Bq/kg. The effective annual dose rate in the samples under study varies from 0.01 to 0.05 mSv/y for sediment samples and from 0.01 to 0.05 mSv/y for black sand samples. The concentrations of radon gas in the air were determined as well as the activity concentrations of 226 Ra. Radon 222 Rn doses from gas inhalation for humans were estimated to be in the range of 0.13e13.09 msv/y for all samples. The activity concentrations of all samples, which were measured in the present work, were compared with the values in other countries in the world, and it was found they were within the permissible limits, which indicates that the study area was radiologically safe for humans.

Assessment of radiological risk from the soils of artisanal mining areas of Anka, North West Nigeria

“…However, Kedah, Malaysia Alzubaidi (2016) recorded the average maximum value of 141.62 nGyh -1 for absorbed dose and 0.859 for external hazard index. The average minimum of annual effective dose rate of 30 µSvy -1 was recorded in Suez Canal region, Egypt (Fares, 2017) while the average maximum of 439.73 µSvy -1 was recorded for mining site, Utagunmodi, Nigeria (Ademola et al, 2013). The result by the latter is however not consistent with those obtained from other studies considering the level of activity concentration of natural radionuclides from which the annual effective dose rate is evaluated.…”

“…The minimum average concentration of 232 Th of 11.41±3.28 Bqkg -1 was recorded at Suez Canal region, Egypt (Fares et al, 2017) and the maximum average of 155.36 Bqkg -1 was recorded in Kaduna, Nigeria (Gyuk et al, 2017). For 40 K, the minimum value of 102.8 ± 12.1 Bqkg -1 was reported in Utagunmodi, Nigeria while the maximum average of 505.1 ± 7.1 Bqkg -1 was reported in Utagunmodi, Nigeria (mining site) Ademola et al, 2013).…”

Measurement of Radon Exhalation Rate, Annual Effective Dose and Radium Activity from Marine Sediments Samples Collected From Abian Beach, Aden Gulf, Yemen

“…It is very important to notice that, this study is constitute the data baseline for the surface and mass exhalation rates in addition to the annual effective dose due to radon from marine sediment samples. Table 3 compares the activity concentrations of radon in beach sediment samples with other studies in different beaches of the world [14,23]. The average value of the radon concentrations in sediment in our study is higher than that in Ras Tanura Saudi Arabia and Thailand, china and Egypt and lower than Saudi Arabia, Khor-Abdulla and Ra's Al-Besha, Iraq and Jordan.…”

“…In general, the soil type and the characteristics of the surface sediment in this region are different from one site to another [23]. The range and mean values for the surface and mass radon exhalation rates, E A and E M , obtained in these measurements are shown in Table 2.…”

Concentrations of TENORMs in the petroleum industry and their environmental and health effects

“…Studies on the radioactivity of the oil and gas industries with a focus on 226 Ra and 228 Ra, in petroleum wastes reported in, 24,25,[42][43][44][45][46][47] were presented in previous literature reviews. However, this study is very detailed.…”