Radiological characterization of natural building materials from the Campania region (Southern Italy)

Sabbarese, C.; Ambrosino, Fabrizio; D’Onofrio, Antonio; Roca, V.

doi:10.1016/j.conbuildmat.2020.121087

Cited by 48 publications

(32 citation statements)

References 37 publications

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“…The average activity concentration of 226 Ra and 232 Th and 40 K in tea leaf samples collected from the local market show greater values than the reported data from Turkey (except 40 K) and Serbia. The fact that the concentrations of 226 Ra, 232 Th and 40 K vary substantially across the various regions depends mainly on their concentrations in the bedrock from which the soil originates [ 65 ].…”

Section: Resultsmentioning

confidence: 99%

Radionuclides Transfer from Soil to Tea Leaves and Estimation of Committed Effective Dose to the Bangladesh Populace

Absar

Abedin

Rahman

et al. 2021

Life

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Considering the probable health risks due to radioactivity input via drinking tea, the concentrations of 226Ra, 232Th,40K and 137Cs radionuclides in the soil and the corresponding tea leaves of a large tea plantation were measured using high purity germanium (HPGe) γ-ray spectrometry. Different layers of soil and fresh tea leaf samples were collected from the Udalia Tea Estate (UTE) in the Fatickchari area of Chittagong, Bangladesh. The mean concentrations (in Bq/kg) of radionuclides in the studied soil samples were found to be 34 ± 9 to 45 ± 3 for 226Ra, 50 ± 13 to 63 ± 5 for 232Th, 245 ± 30 to 635 ± 35 for 40K and 3 ± 1 to 10 ± 1 for 137Cs, while the respective values in the corresponding tea leaf samples were 3.6 ± 0.7 to 5.7 ± 1.0, 2.4 ± 0.5 to 5.8 ± 0.9, 132 ± 25 to 258 ± 29 and <0.4. The mean transfer factors for 226Ra, 232Th and 40K from soil to tea leaves were calculated to be 0.12, 0.08 and 0.46, respectively, the complete range being 1.1 × 10−2 to 1.0, in accordance with IAEA values. Additionally, the most popularly consumed tea brands available in the Bangladeshi market were also analyzed and, with the exception of 40K, were found to have similar concentrations to the fresh tea leaves collected from the UTE. The committed effective dose via the consumption of tea was estimated to be low in comparison with the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) reference ingestion dose limit of 290 μSv/y. Current indicative tea consumption of 4 g/day/person shows an insignificant radiological risk to public health, while cumulative dietary exposures may not be entirely negligible, because the UNSCEAR reference dose limit is derived from total dietary exposures. This study suggests a periodic monitoring of radiation levels in tea leaves in seeking to ensure the safety of human health.

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Section: Resultsmentioning

confidence: 99%

Radionuclides Transfer from Soil to Tea Leaves and Estimation of Committed Effective Dose to the Bangladesh Populace

Absar

Abedin

Rahman

et al. 2021

Life

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“…We can speculate that a combination of two factors affects the radon concentration in Campania region: the complex geological and structural setting of this region [47] and the building materials of volcanic rock origin and pyroclastic sediments (i.e., lavic stones, tuffs, pozzolana) presenting high 226 Ra radioactivity level and used in recent and ancient constructions [8]. It is well known that the radioactivity contents of building materials contribute to radiation exposure, and radon exhalation can increase the radon level indoor, depending on the type of material [7,[48][49][50].…”

Section: Discussionmentioning

confidence: 99%

Radon Survey in Bank Buildings of Campania Region According to the Italian Transposition of Euratom 59/2013

D’Avino

Pugliese

Ambrosino

et al. 2021

Life

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222Rn gas represents the major contributor to human health risk from environmental radiological exposure. In confined spaces radon can accumulate to relatively high levels so that mitigation actions are necessary. The Italian legislation on radiation protection has set a reference value for the activity concentration of radon at 300 Bq/m3. In this study, measurements of the annual radon concentration of 62 bank buildings spread throughout the Campania region (Southern Italy) were carried out. Using devices based on CR-39 solid-state nuclear track detectors, the 222Rn level was assessed in 136 confined spaces (127 at underground floors and 9 at ground floors) frequented by workers and/or the public. The survey parameters considered in the analysis of the results were: floor types, wall cladding materials, number of openings, door/window opening duration for air exchange. Radon levels were found to be between 17 and 680 Bq/m3, with an average value of 130 Bq/m3 and a standard deviation of 120 Bq/m3. About 7% of the results gave a radon activity concentration above 300 Bq/m3. The analysis showed that the floor level and air exchange have the most significant influence. This study highlighted the importance of the assessment of indoor radon levels for work environments in particular, to protect the workers and public from radon-induced health effects.

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“…An assessment of radon exhalation from building materials in Libya gave a mean radon exhalation rate of 1.751 Bq/m 2 •h from six types of granite and 0.593 Bq/m 2 •h from two types of marbles, demonstrating that the radon exhalation rates from granites were approximately three times higher than that from marbles [10]. Sabbarese, Ambrosino, D'Onofrio, and Roca [2] assessed the radon exhalation rates of two types of marble in Southern Italy. The results showed that (47.1 ± 5.1) × 10 −2 and (111.2 ± 3.9) × 10 −2 Bq/m 2 •h, which was slightly higher than that of this study.…”

Section: Resultsmentioning

confidence: 99%

“…More than 50% of the radiation dose received by the general public is due to radon and its progeny [1], which have been considered as one of the main causes of lung cancer [2][3][4]. Although this radon is mainly emitted in soil or rocks, radon from building materials is another potential source of radon in indoor air [5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

222Rn Exhalation Rates from Some Granite and Marble Used in Korea: Preliminary Study

Lee

Yoon

et al. 2021

Atmosphere

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The objective of this study was to establish a test method for assessing radon exhalation rates from building materials considering radon related environmental policy and research in Korea. This method was established in consideration of cost-effectiveness based on the International Standards Organization (ISO) method and the closed chamber method, which is an evaluation method for the emission of hazardous chemical substances from building materials in Korea. The assessment of radon exhalation rates from five types each of granite and marble used in the construction industry in Korea gave mean radon exhalation rates of 0.497 ± 0.467 Bq/m2∙h from granite and 0.193 ± 0.113 Bq/m2∙h from marble, indicating higher radon exhalation rates from granite. These results are consistent with those of a previous study, indicating that granites are more likely to show higher radon exhalation rates than marbles.

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Radiological characterization of natural building materials from the Campania region (Southern Italy)

Cited by 48 publications

References 37 publications

Radionuclides Transfer from Soil to Tea Leaves and Estimation of Committed Effective Dose to the Bangladesh Populace

Radionuclides Transfer from Soil to Tea Leaves and Estimation of Committed Effective Dose to the Bangladesh Populace

Radon Survey in Bank Buildings of Campania Region According to the Italian Transposition of Euratom 59/2013

222Rn Exhalation Rates from Some Granite and Marble Used in Korea: Preliminary Study

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