Distribution of natural radioactivity around mechanized and non mechanized mining regions

• Autorzy: Idriss Hajo , Salih Isam , Abdelbagi Hiaty , Higazi Abdelrahman , Ali Nagi I.

Identyfikatory

DOI

10.1007/s11600-019-00311-4

• Języki publikacji: EN

Abstrakty

EN

This study was conducted to assess the radiological impacts of mining activities in mechanized and non-mechanized mining sites in order to build up database records for non-nuclear industries. Measurements of ²²⁶Ra, ²²⁶Th and ⁴⁰K in 50 soil samples collected from these sites were carried out using gamma spectrometry system. The investigations showed that the highest concentrations of these radionuclides were 32, 37 and 648 Bq/kg, respectively . The average values in the mechanized region were 16±7, 22±9 and 366±148 Bq/kg, respectively, while in non-mechanized region they were 9±4, 12±6 and 111±68 Bq/kg, respectively. Spearman’s rank correlation test resulted in signifcant correlations (at 0.01 level) between ²²⁶Ra and ²³²Th (0.6) and 40K (0.8) in the mechanized region, while ²³²Th correlated with ⁴⁰K (0.445) in the non-mechanized region. At 0.05 level, only ²³²Th is correlated with ⁴⁰K in mechanized area (0.58). Between the two groups, only 40K in the mechanized area showed signifcant correlation to ²³²Th in the non-mechanized area (0.497) at 0.05 level. The ^226Ra/232Th ratios were 0.88±0.66 and 0.77±0.23 in the two regions, while ²²⁶Ra/⁴⁰K ratios were much lower than natural. This is attributed to weathering and metrological conditions rather than mining activity. Some radiological parameters were assessed displayed in general, signifcantly low values when compared with average global and recommended values. It can be concluded that both mechanized mining and non-mechanized mining do not signifcantly alter the levels of natural radioactive elements and do not give rise to a signifcant radiation exposure for the mining workers or population.

Słowa kluczowe

EN

radioactivity; mechanized mining; environmental monitoring; dose indices; non-mechanized mining

PL

radioaktywność; mechanizacja górnictwa; monitorowanie środowiska

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2019
• Tom: Vol. 67, no. 4
• Strony: 1139--1147
• Opis fizyczny: Bibliogr. 29 poz.

Twórcy

autor

Idriss Hajo

• College of Science, Physics Department, Imam Mohammad Ibn Saud Islamic University, Committee on Radiation and Environmental Pollution Protection, P.O. Box 90950, Riyadh 11623, Saudi Arabia
• Sudan Atomic Energy Commission, P.O. Box 3001, Khartoum, Sudan

autor

Salih Isam

• Department of Physics, College of Science, Taibah University, Medina, Saudi Arabia
• Sudan Atomic Energy Commission, P.O. Box 3001, Khartoum, Sudan

autor

Abdelbagi Hiaty

• Sudan Atomic Energy Commission, P.O. Box 3001, Khartoum, Sudan

autor

Higazi Abdelrahman

• Sudan Atomic Energy Commission, P.O. Box 3001, Khartoum, Sudan

autor

Ali Nagi I.

• Department of Radiological Sciences and Medical Imaging, College of Applied Medical Sciences, Majmaah University, Majmaah 11952, Saudi Arabia

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).