Radium activity and radon exhalation rates from phosphate ores using CR-39 on-line with an electronic radon gas analyzer “Alpha GUARD”

Saad, A.F.

doi:10.1016/j.radmeas.2008.04.052

Cited by 22 publications

(5 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Observed radon activities (Bq m −3 ), (Bq kg −1 ) and radon exhalation rates, E A and E M , are presented in Table 4. In general, comparable radon activity concentrations and exhalation rates were observed for fertilizers analyzed by Saad [25].…”

Section: Radonsupporting

confidence: 65%

Natural Radioactivity and Radon Exhalation in Phosphate Fertilizers

Kadi

Al-Eryani

2011

Arab J Sci Eng

View full text Add to dashboard Cite

238 U, 232 Th, 226 Ra, 222 Rn and 40 K activity concentrations in fertilizer samples collected from a local market were determined. Radon activity concentrations ranged from 0.04-252 Bq kg −1 and were comparable with low activity concentrations ranges reported previously. Radon exhalation rates and effective 226 Ra concentration were determined using CR-39 solid-state nuclear track detectors. Effective 226 Ra concentrations ranged from 4.27-33.93 Bq kg −1 . Two different 222 Rn exhalation rates were determined; area dependent exhalation rates (0.044-0.351 Bq m −2 h −1 ) and mass dependent exhalation rates (0.023-0.180) Bq kg −1 h −1 ). Even without secular equilibrium, strong correlations were generally apparent among uranium concentrations, effective 226 Ra concentrations and 222 Rn exhalation rates in samples with high concentrations of uranium. 232 Th and 40 K concentrations ranged from 0-44.6 and 0.08-127 µg/g, respectively.

show abstract

Section: Radonsupporting

confidence: 65%

Natural Radioactivity and Radon Exhalation in Phosphate Fertilizers

Kadi

Al-Eryani

2011

Arab J Sci Eng

View full text Add to dashboard Cite

show abstract

“…Appl., Vol. XX, X, (2023) studied fields, T is the irradiation time (28 days), and η is the calibration coefficient of CR-39 detectors [13,16,32] For calculating the levels of dissolved radon concenteation functional depth of investigated samples the following equation was used [33,34]:…”

Section: Materials and Analysismentioning

confidence: 99%

Evaluation of Radon Radioactivity and Radiological Impact by Using Solid-State Nuclear Track Detector for Erediya younger granites of Central Eastern Desert in Egypt

MITWALLI

Qabeeli

El-Khatib

et al. 2023

Arab Journal of Nuclear Sciences and Applications

View full text Add to dashboard Cite

The current study is carried out to monitor radioactivity levels in Erediya younger granites of the Central Eastern Desert in Egypt by using a solid-state nuclear track detector (CR-39 NTD). The polymeric CR-39 NTD was used to determine radium-226 and radon-222 activity concentration, and the theoretical conversion equations, were employed to assess the radiological impact. Predetermined 33 samples were collected from different locations within and around Egypt's Eradia area fulfilling the IAEA TECDOC-1415 protocols. The measured overall average value of the radium and radon activity concentration are 7467.44±50.68 and 7840.14±53.2 Bqm -3 , respectively, which indicated a high abundance of TENORM in the collected samples of the investigated area. The exhalation rate and annual effective dose were calculated, indicating high grades than the permissible limit recommended by IAEA and UNSCEAR, and the average values are 0.87±0.01 Bqm -2 h -1 and 1637.82±26.87 mSvy -1 respectively. The present result is a reference for the radioactivity background as well as assesses any harmful radiation, and particularly helps in applying radiation protection principles for the occupational worker in the Erediya area. To furnish the outcome of the study, data was plotted as counter maps for tracking the distribution pattern of radioactivity levels and concerning radiation protection and human safety work level index was calculated to apply perfect radiation protection methodologies for the occupational.

show abstract

“…The reason of choosing this region because it is a new reclaimed area and there are no enough researches in it. The samples were divided to, 15 samples of soil and Second, the samples sieved through 200 mesh, to optimize the grain size of the heavy mineral [12]. Third, each sample has been placed in a plastic container, which was sealed to avoid the escape of 222 Rn and 220 Rn from the samples.…”

Section: Sampling and Samples Preparationmentioning

confidence: 99%

Study of Radionuclides and Radon Exhalation Rate in Soil and Sand Samples from Tiba, Luxor, Governorate

Negm¹,

Ahmed²,

Abbady³

et al. 2019

WJNST

View full text Add to dashboard Cite

In this study, the natural radionuclides in soil and sand have been measured by using high purity germanium (HPGe) detector. While, radon exhalation rate has been measured by Alpha GUARD. The data analysis is performed to determine 226 Ra, 232 Th, and 40 K activity concentrations in addition to 222 Rn exhalation rate. The values of radium equivalent activity (R aeq), external hazard index (H ex), internal hazard index (H in), and absorbed dose rate were ranged from 46.46 to 124.16 Bq•kg −1 , 0.07 to 0.33 Bq•kg −1 , 0.09 to 0.42 Bq•kg −1 , and 13.24 to 58.37 nGy•h −1 respectively in all samples. The area and mass exhalation rates were increased from 9.16 ± 2.83 to 16.18 ± 2.83 Bq•m −2 •h −1 and 1.8 ± 1.34 to 11.35 ± 0.98 Bq•kg −1 •h −1 respectively.

show abstract

Radium activity and radon exhalation rates from phosphate ores using CR-39 on-line with an electronic radon gas analyzer “Alpha GUARD”

Cited by 22 publications

References 14 publications

Natural Radioactivity and Radon Exhalation in Phosphate Fertilizers

Natural Radioactivity and Radon Exhalation in Phosphate Fertilizers

Evaluation of Radon Radioactivity and Radiological Impact by Using Solid-State Nuclear Track Detector for Erediya younger granites of Central Eastern Desert in Egypt

Study of Radionuclides and Radon Exhalation Rate in Soil and Sand Samples from Tiba, Luxor, Governorate

Contact Info

Product

Resources

About