Natural radioactivity contents in tobacco

El-Aziz, N. Abd; Khater, Ashraf E. M.; Al-Sewaidan, Hamed A.

doi:10.1016/j.ics.2004.11.166

Cited by 18 publications

(8 citation statements)

References 2 publications

(3 reference statements)

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“…Due to the relative high activity concentrations of 210 Po and its precursor 210 Pb (beta emitter with a T 1/2 ϭ 22.2 y) that are found in tobacco and its products, cigarette smoking highly increases the internal intake of both radionuclides and their concentrations in lung tissues. The carcinogenic effect of 210 Po and 210 Pb with respect to lung cancer is an important problem in many countries, such as Italy, with very high cigarette consumption (Kilthau 1996;Peres and Hiromoto 2002;Abd El-Aziz et al 2005).…”

Section: Introductionmentioning

confidence: 99%

210Po AND 210Pb INHALATION BY CIGARETTE SMOKING IN ITALY

et al. 2007

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210Po and its precursor 210Pb in cigarette smoke contribute a significant radiation dose to the lungs of smokers. In this work, the concentration of 210Po was determined in 17 of the most frequently smoked cigarette brands in Italy. Samples of tobacco, fresh filters, ash, and post-smoking filters were analyzed; 210Po was determined by alpha spectrometry after its spontaneous deposition on a silver disk. To verify the radioactive equilibrium between 210Po and 210Pb, lead was determined in one tobacco sample by counting the beta activity of its decay product 210Bi with a gas flow proportional detector after separation. The results of the present study show 210Po concentrations ranged from 6.84 to 17.49 mBq per cigarette. Based on these results, smokers who smoke 20 cigarettes per day inhale, on average, 79.53 +/- 28.65 mBq d(-1) of 210Po and 210Pb each. The mean value of the annual committed effective dose for Italian smokers, calculated by applying the dose conversion factor for adults of 4.3 microSv Bq(-1) for 210Po and 5.6 microSv Bq(-1) for 210Pb, was estimated to be 124.8 and 162.6 microSv y(-1) for 210Po and 210Pb, respectively. The lung dose from inhalation of cigarette smoke is much higher than the lung dose from inhalation of atmospheric 210Po and 210Pb.

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Section: Introductionmentioning

confidence: 99%

210Po AND 210Pb INHALATION BY CIGARETTE SMOKING IN ITALY

et al. 2007

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“…11,2 ± 1,1 10,6 ± 1,6 8 6,6 ± 0,8 7,9 ± 0,9 9 20,4 ± 1,7 12,5 ± 1, 3 10 17,0 ± 1,6 10,1 ± 1,1 11 9,5 ± 1,0 6,5 ± 0,7 12 8,1 ± 0,9 9,4 ± 1,3 13 12,3 ± 1,3 Cs radyoaktivite konsantrasyonuna rastlanmamıştır.…”

Section: Bulgular (Results)unclassified

Sigara tütününün doğal ve yapay radyoaktivitesinin belirlenmesi

Ağuş¹

2016

SAUFenBilDer

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ÖZSigara tütünündeki doğal ve yapay radyoaktivite konsantrasyonları %20 rölatif verimli n-tipi HPGe gama spektrometre kullanılarak belirlenmiştir. 226 Pb ortalama radyoaktivite konsantrasyonları sırasıyla 11,9 ± 1,4, 11,7 ± 1,4, 1197,48 ± 143,7 ve 24,9 ± 3,0 Bq/kg olarak bulunmuştur. Pb radyoaktivite konsantrasyonları değerleri dünyadaki diğer çalışmalarda elde edilen sonuçlarla uyuşmaktadır.Anahtar Kelimeler: doğal radyoaktivite, yapay radyoaktivite, tütün, gama spektrometri Determination of the natural and artificial radioactivity of the tobacco ABSTRACT Natural and artificial radioactivity concentrations of the Tobacco samples were determined using 20% n-type HPGe gamma-ray spectrometer. Pb average radioactivity concentrations were found to be 11,9 ± 1,4, 11,7 ± 1,4, 1197,48 ± 143,7 ve 24,9 ± 3,0 Bq/kg respectively.

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“…Alpha Index (I α ) External hazard Index is reflecting the external radiation that the samples were exposed, it's defined by [23,24] as:…”

Section: External Hazard Index (H Ex ) Gamma Index (I ɣ ) Andmentioning

confidence: 99%

Radiation Hazards Indices of Silhouette Plants in Spring and Summer Seasons

Jameel¹,

Kadhim²,

Ridha³

2019

PLANT

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The radiation hazards indices of common silhouette plants used in homes decoration were studied at two seasons; spring and summer. Twelve species of silhouette plants were collected from nurseries in Baghdad, six of them were collected in spring season others in summer season, each group were positioned in the laboratory at normal conditions. The measurements were carried out using NaI (Tl) gamma-ray spectrometry. Results shown a little difference between the mean specific activities of the radionuclides, they were 161.2±11.8, 11.2±1.2Bq/kg, and 5.8±0.5Bq/kg in spring season plants, 159.5±21.1, 5.4±0.8Bq/kg, and 6.4±0.4 in summer season plants for K-40, Bi-214, and Tl-208 respectively. According to these results the mean radiation hazard indices (The radium equivalent activity, absorbed dose rate, annual effective dose equivalent, external hazard indices, annual gonadal dose and excess lifetime cancer risk) were also convergent to each other in plant samples of both groups. The highest specific activities were appeared in Dareseny plant 197.11Bq/kg, 15.94Bq/kg, and 7.8 Bq/kg for K-40, Bi-214, and Tl-208 respectively. While in summer season the K-40 (265.9Bq/Kg) and Bi-214 (8.6Bq/Kg) were higher in sygonium, and Tl-208 is higher in Ficus Elatic (9.2Bq/Kg). All results are within the recommended values.

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Natural radioactivity contents in tobacco

Cited by 18 publications

References 2 publications

210Po AND 210Pb INHALATION BY CIGARETTE SMOKING IN ITALY

210Po AND 210Pb INHALATION BY CIGARETTE SMOKING IN ITALY

Sigara tütününün doğal ve yapay radyoaktivitesinin belirlenmesi

Radiation Hazards Indices of Silhouette Plants in Spring and Summer Seasons

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