Measurements of natural radionuclides in human teeth and animal bones as markers of radiation exposure from soil in the Northern Malaysian Peninsula

Almayahi, B. A.; Tajuddin, A.A.; Jaafar, Mohamad Suhaimi

doi:10.1016/j.radphyschem.2013.10.016

Cited by 24 publications

(14 citation statements)

References 35 publications

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“…The activity of 238 U and 232 Th ranged from 141 to 295.5 Bq kg À1 and 141e216.5 Bq kg À1 with the average values of 203.83 Bq kg À1 and 186.17 Bq kg À1 in Cameron highlands and 61e170.5 Bq kg À1 and 89.5e165.5 Bq kg À1 with the average values of 110 Bq kg À1 and 130 Bq kg À1 in Penang, respectively. Almayahi et al in 2014 reported natural radioactivity in human teeth and animal bones in Northern Malaysian Peninsula by using HPGe detector (Almayahi, Tajuddin, & Jaafar, 2014). The mean activity concentrations of 40 K, 137 Cs, 210 Pb, 226 Ra , 228 Ra and 228 Th in human teeth were found 12.31 ± 7.27 Bq g À1 , 0.48 ± 0.21 Bq g À1 , 0.56 ± 0.21 Bq g À1 , 0.55 ± 0.23 Bq g À1 , 1.82 ± 1.28 Bq g À1 , and 0.50 ± 0.14 Bq g À1 , respectively where in case of bones their values were found 3.79 ± 0.81 Bq g À1 , 0.07 ± 0.02 Bq g À1 , 0.08 ± 0.02 Bq g À1 , 0.16 ± 0.04 Bq g À1 , 0.51 ± 1.08 Bq g À1 , and 0.06 ± 0.02 Bq g À1 , respectively.…”

Section: Summary Of the Resultsmentioning

confidence: 99%

An overview on measurements of natural radioactivity in Malaysia

Ahmad

Jaafar

Bakhash

et al. 2015

Journal of Radiation Research and Applied Sciences

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NaISoil Radioactivity a b s t r a c t Humans are always exposed during their lives to ionizing radiation arising outside and within the earth. The exposure to these radiation occurs from natural sources such as radioactive elements in rocks and soil, internal exposure form radioactive elements through water, food and air and cosmic rays entering from outer space to earth's atmosphere. About 87% of the radiation dose received by human beings is due to natural radiation, it is essential to assess the radiation doses in order to control possible health effects from such natural sources. In this regard, a number of articles have been appeared for Malaysia in international research journals, which have been reviewed and complied in this article. Most of these articles are about the measurement of activity concentrations of primordial ( 238 U, 232 Th, 226 Ra and 40 K) and anthropogenic ( 137 Cs) radionuclide's and gamma dose rate in environmental samples using HPGe and NaI (Tl) survey meter.

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Section: Summary Of the Resultsmentioning

confidence: 99%

An overview on measurements of natural radioactivity in Malaysia

Ahmad

Jaafar

Bakhash

et al. 2015

Journal of Radiation Research and Applied Sciences

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“…Radon gets into the body through the air and drinking water then it is carried by the bloodstream and accumulates in the tissues, especially those of bone and tooth. According to WHO, the accumulated radon in bone and tooth can be used as marker [11,12].…”

Section: Discussionmentioning

confidence: 99%

Superoxide Dismutase (SOD) Level in Blood of the People Living in High and Lowest Radon Exposure Area: A Study in Padalarang, West Java Indonesia

Azhari¹,

Suhardjo²,

Sitam³

et al. 2016

UCMS

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Abstract:Radon 222 released from rocks contribute to the level of radiation in human body. The stratigraphy of West Java, which is dominated by granite, has a high level of radon. The result of the study in Padalarang shows that the highest dose of radon is 24 Bq/kg and the lowest 17 Bq/kg. The alpha rays may affect the Superoxide Dismutase (SOD) level. The research is conducted on all men and women in the age of 30 to 70 living in Padalarang district who met the inclusion criteria, with good general health condition, being original inhabitant since birth, not suffering from chronic systemic infectious diseases, and willing to participate in the research by completing the informed consent. Sample is taken by using consecutive sampling. Blood sample is taken as much as 2 cc/person by using a 2cc syringe, which is then inserted into venoject tube containing heparin. Antioxidant activity in the blood plasma is examined by using SOD Kit. The average of SOD level is 3.56 ui/ml in Highland (Masigit Mountain) and 1.65ui/ml in lowland (Cipatat). The increase of SOD level of the people living in Highland is suspected to be the contribution of radon exposure contained in rocks and water.

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“…Kepekatan aktiviti 40 K dalam tanah juga tidak menyumbang kesan dedahan sinaran yang ketara disebabkan ia bukanlah progeni hasil daripada pereputan siri uranium dan torium (Hamzah et al 2011 (Ali et al 2016;Alsaffar et al 2015;Aswood et al 2013;Micheal et al 2014;Priharti & Supian 2016;Shyamal et al 2013 226 Ra 228 pengambilan radionuklid oleh tumbuhan (Greger 2004 K bagi kedua-dua musim penanaman masing masing ialah 0.42 -0.71, 0.01 -0.08 dan 0.85 -5.34. Keputusan kajian mendapati nilai faktor pemindahan radionuklid yang ditentukan dalam kajian ini adalah setara dengan nilai yang dilaporkan bagi pelbagai jenis tanaman dalam kajian terdahulu (Almayahi et al 2014;Gaffar et al 2014;Saeed et al 2011;Solehah et al 2016). Perbezaan kecil nilai faktor pemindahan radionuklid bagi tumbuhan mungkin disebabkan oleh proses pengangkutan serta kapasiti penyerapan yang berbeza (Solehah et al 2016).…”

Section: Pendahuluanunclassified