tailieunhanh - Activity concentrations of 210Pb in the aerosol at Hanoi

In this study, aerosol samples at Hanoi, Vietnam from February 2017 to January 2018 collected on the glass fiber filter were analyzed for 210Pb by using HPGe spectrometry. 210Pb weekly activity concentrations were in the range of to with an average value of and 210Pb monthly activity concentrations were in the range of to with an average value of . | Nuclear Science and Technology No. 1 2018 pp. 17-22 Activity concentrations of 210Pb in the aerosol at Hanoi Duong Duc Thang Vuong Thu Bac Nguyen Quang Long Nguyen Thi Thu Ha Nguyen Ngoc Quynh Nguyen Van Khanh Nguyen Thi Oanh Cao Duc Viet Institute for Nuclear Science and Technology - 179 Hoang Quoc Viet - Cau Giay - Hanoi Email ducthangb2k52@ Received 20 March 2018 accepted 14 May 2018 Abstract In this study aerosol samples at Hanoi Vietnam from February 2017 to January 2018 collected on the glass fiber filter were analyzed for 210Pb by using HPGe spectrometry. 210Pb weekly activity concentrations were in the range of to with an average value of 210Pb monthly activity concentrations were in the range of to with an average value of . The analysis of monthly averaged 210Pb activity concentrations revealed a dominant seasonal variability high activity concentrations of 210Pb in winter and lower values in summer. The correlation between the activity concentrations of 210Pb in aerosol and the meteorological parameters average temperature precipitation and relative humidity were observed and the obtained correlation coefficients are and respectively. Keywords activity concentrations of210Pb HPGe MCNP. I. INTRODUCTION One of the important radionuclides in atmospheric air regarding both scientific research and everyday air quality is the naturally occurring radionuclide 210Pb 7 . It is a member of the 238U decay chain which is naturally present in the Earth s crust 1 7 . As 210Pb is formed in the chain after the alpha decay of 222Rn which is a noble gas and thus able to exhale through the soil and migrate to the atmosphere transfer in air and deposit to the ground 7 . A considerable amount of 210Pb is constantly present around us in the environment 7 . Together with other 222Rn progeny 210Pb has a significant impact on the effective dose of ionizing radiation .

• Năng lượng
• Activity concentrations of 210Pb
• HPGe spectrometry
• Meteorological parameters
• Institute for Nuclear Science and Technology
• HPGe gamma ray spectrometry