TY - JOUR
T1 - Measurements of Natural Radionuclides and 137Cs in Airborne Particulate Samples Collected from Bali and Lombok Islands (Indonesia)
AU - Syarbaini, S.
AU - Wahyudi, W.
AU - Suhariyono, G.
AU - Gunawan, D.
AU - Suharguniyawan, E.
N1 - Funding Information:
The authors wish to express our gratitude to the National Nuclear Energy Acency (BATAN) for the financial support throughout this work. The authors express gratitude to the Climate Change and Air Quality Center, Meteorology Climatology and Geophysics Agency (BMKG) for the support of technical assisstance.
Publisher Copyright:
© 2021 Atom Indonesia. All rights reserved
PY - 2021
Y1 - 2021
N2 - Bali and Lombok islands are popular resorts and tourist destinations in the world because of their culture and beautiful natural view. The natural and anthropogenic radionuclides content in surface air of Bali and Lombok islands such as 226Ra, 232Th, 40K and 137Cs were measured at 3 monitoring stations in a period from January to December 2016. Aerosol samples were collected using a high volume total suspended particles (TSP) sampler. The activity concentrations of those radionuclides in the airborne particulate matter were measured using gamma-ray spectrometry. The results show that the activity concentrations of natural radionuclides 226Ra, 232Th, and 40K ranged from 1.0 to 3.04 μBq/m3, not detected to 1.78 μBq/m3sup>, and 0.03 to 0.49 mBq/m3sup>, respectively. All the airborne particulate matter filter samples were found to be lower than the minimum detectable activity for 137Cs, which means that none of 137Cs is originated from atmospheric nuclear weapon tests and other sources in the surface air of Bali and Lombok islands. Variations of monthly activity concentrations of natural radionuclides were influenced by rainfall during the study period. Furthermore, the peak concentrations of radionuclides also occur due to volcanic ash coming from the Mount Rinjani eruption.
AB - Bali and Lombok islands are popular resorts and tourist destinations in the world because of their culture and beautiful natural view. The natural and anthropogenic radionuclides content in surface air of Bali and Lombok islands such as 226Ra, 232Th, 40K and 137Cs were measured at 3 monitoring stations in a period from January to December 2016. Aerosol samples were collected using a high volume total suspended particles (TSP) sampler. The activity concentrations of those radionuclides in the airborne particulate matter were measured using gamma-ray spectrometry. The results show that the activity concentrations of natural radionuclides 226Ra, 232Th, and 40K ranged from 1.0 to 3.04 μBq/m3, not detected to 1.78 μBq/m3sup>, and 0.03 to 0.49 mBq/m3sup>, respectively. All the airborne particulate matter filter samples were found to be lower than the minimum detectable activity for 137Cs, which means that none of 137Cs is originated from atmospheric nuclear weapon tests and other sources in the surface air of Bali and Lombok islands. Variations of monthly activity concentrations of natural radionuclides were influenced by rainfall during the study period. Furthermore, the peak concentrations of radionuclides also occur due to volcanic ash coming from the Mount Rinjani eruption.
KW - Anthropogenic radionuclides
KW - Bali and Lombok islands
KW - Natural radionuclides
KW - Surface air
KW - Total suspended particles
UR - http://www.scopus.com/inward/record.url?scp=85106563666&partnerID=8YFLogxK
U2 - 10.17146/AIJ.2021.1087
DO - 10.17146/AIJ.2021.1087
M3 - Article
AN - SCOPUS:85106563666
SN - 0126-1568
VL - 47
SP - 11
EP - 16
JO - Atom Indonesia
JF - Atom Indonesia
IS - 1
ER -