Distribution of 137Cs, 40K, 232Th and 238U in coastal marine sediments of Margarita Island, Venezuela

LaBrecque, J. J.; Cordoves, P. R.; Cordoves, M. A.; Pérez, Karla; Palacios, D.; Alfonso, Juan A.

doi:10.1007/s10967-009-0434-7

Cited by 12 publications

(3 citation statements)

References 16 publications

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“…The Excess Life Cancer Risk Most researchers in this field agreed on the possibility of cancer or developing a genetic defect in the human progeny in the future due to taking low-effective ionized radiation doses over a long period of time [23][24][25][26][27]. Therefore, to evaluate this possibility, the 3.6 The Excess Life Cancer Risk (ELCR) value is calculated using: ( 8 ) where D L is the life period of 66 years and R f is the fatal risk factor per 0.05 Sv -1 for the public [4,5].…”

Section: 6mentioning

confidence: 99%

“…The spread of naturally occurring radionuclides and environmental radioactivity have become an important issue in many countries [1][2][3][4][5][6][7]. The measurement of these naturally occurring radionuclides in natural salt materials in a specific environment allows determining the exposure and the absorbed doses in the population or subjects working in close contact to these materials .…”

Section: Introductionmentioning

confidence: 99%

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Measurement and Analysis of Natural Radioactive Elements in Salty Sediments from Central and Southern Iraq

Jasim¹,

Ramadan

Hussain

2021

eijs

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Purification of fifteen NaCl samples from natural and different area in the middle and south of Iraq are prepared and studied the structural characteristics of samples by powder X-ray diffraction analysis at ð›Œ=1.542Ã…. The present work considered the specific activities of naturally occurring radioactive materials in salt samples, which are measured and analyzed using high resolution HPGe system. Also, the radiological parameters have been considered in this work. The average specific concentration (in Bq.kg-1) of the salt samples is found 16.864.92 for 226Ra, 5.972.05 for 232Th and 9.852.8 for 40K, respectively, which are below the national levels, 40Bq.kg-1, 30Bq.kg-1 and 400Bq.kg-1, respectively (UNSCEAR, 2000). Similarly the absorb dose rates are in the range3.71 nGy.h-1 to 12.591nGy.h-1.The measured radiation hazard indices show that the concentrations of these radionuclides in all samples are within the allowable limits.

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Section: 6mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Measurement and Analysis of Natural Radioactive Elements in Salty Sediments from Central and Southern Iraq

Jasim¹,

Ramadan

Hussain

2021

eijs

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“…The most interesting radioactive nuclei are those with long half-live comparable with the age of Earth such as 235 U, 238 U, 232 Th and 40 K. Radioactivity levels of these radionuclides are relatively distributed in sand and soil based on the type and nature of its geological formation [8]. Therefore, it is important to specify limits or baseline for radioactivity levels for different environments before any contamination or radioactive pollution takes place [9]. In order to achieve this goal, isotopic determinations of natural and artificial radionuclides data sets are highly required for environmental monitoring, nuclear safeguards, and public health studies [8].…”

mentioning

confidence: 99%

Measuring of natural and artificial radioactivity in Al-Dakhiliya governorate, Sultanate of Oman

Al-Azri

Al-Riyami

Al-Amri

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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Soil and sand samples were collected from eight different locations in the Al-Dakhiliya governorate, Sultanate of Oman to determine and evaluate the natural and artificial radioactivity levels. The activity concentrations of radionuclides 137Cs, 226Ra, 40K, 235U and 228Ac were measured using high resolution gamma-ray spectroscopy detectors (HPGe detectors). In addition, radiation hazard indexes were evaluated in order to measure radioactive risk for human beings and the environment. The activity concentrations of 137Cs, 226Ra, 40K, 235U and 228Ac were found as 0.82 ± 0.04, 29.01 ± 1.37, 290.14 ±2.79, 5.88 ± 0.65 and 39.57 ± 3.85 Bq/Kg respectively. Radium-equivalent activity Raeq was obtained and varied in the range from 340 to 43 Bq/Kg with a mean value of 108.3 Bq/Kg. The study found that the gamma indexes, external indexes and internal indexes in most sites were less than 1, which indicates a low radioactive dose. The study concludes that seven sites contain relatively low radioactivity, whereas one site requires more investigation in future as the results show a sort of rise in the radioactivity rate on its samples.

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Radioactivity in the Exclusive Economic Zone of east coast Peninsular Malaysia: distribution trends of 137Cs in surface seawater

Ahmad

Mahmood

Shahar

et al. 2010

J Radioanal Nucl Chem

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Distribution of 137Cs, 40K, 232Th and 238U in coastal marine sediments of Margarita Island, Venezuela

Cited by 12 publications

References 16 publications

Measurement and Analysis of Natural Radioactive Elements in Salty Sediments from Central and Southern Iraq

Measurement and Analysis of Natural Radioactive Elements in Salty Sediments from Central and Southern Iraq

Measuring of natural and artificial radioactivity in Al-Dakhiliya governorate, Sultanate of Oman

Radioactivity in the Exclusive Economic Zone of east coast Peninsular Malaysia: distribution trends of 137Cs in surface seawater

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