NDLI: Promotion of the lower limit of detection of gamma emitting nuclides in radioaerosol samples after Fukushima accident

Content Provider	Springer Nature Link
Author	Wang, Jinglong Jiang, Yifei Huang, Dekun Wen, Tingyu Du, Jinzhou Zhang, Jing
Copyright Year	2011
Abstract	Through placement in a few hours after collecting radioaerosol samples (in Shanghai) after Fukushima nuclear power plant (NPP) accident, radionuclides with gamma-emitting rays can be found to be nuclides ($^{132}$I/$^{132}$Te, $^{129}$I/$^{129}$Te) other than $^{131}$I, $^{134,137}$Cs because of the decrease in background baseline after the daughter nuclides (i.e. $^{214}$Bi, $^{214}$Pb and etc.) of radon makes decay sharply. Based on aerosol sample collected by passing through 1,300 M$^{3}$ air in 24 h, the lower limit of detection (LLD) of $^{132}$I/$^{132}$Te, $^{129}$I/$^{129}$Te can be decreased from 6.11 × 10$^{−5}$, 3.46 × 10$^{−4}$ Bq m$^{−3}$ after half an hour sampling to 1.64 × 10$^{−5}$, 8.19 × 10$^{−5}$ Bq m$^{−3}$ after sampling 48 h sampling. Similarly, LLD can be decreased from 9.63 × 10$^{−5}$ to 1.41 × 10$^{−5}$ Bq m$^{−3}$ for $^{131}$I, 7.72 × 10$^{−5}$ to 9.96 × 10$^{−6}$ Bq m$^{−3}$ for $^{134}$Cs and 9.67 × 10$^{−5}$ to 1.45 × 10$^{−5}$ Bq m$^{−3}$ for $^{137}$Cs after the same time sampling. In the same time, the activities of daughter nuclides such as $^{214}$Pb and $^{212}$Bi from the decay of their parent nuclides $^{222}$Rn and $^{220}$Rn can sharply decrease from 2.45 × 10$^{−2}$, 2.57 × 10$^{−2}$ Bq m$^{−3}$ to be ~10$^{−4}$ Bq m$^{−3}$ while the activities of the concerned nuclides $^{132}$I/$^{132}$Te, $^{129}$Te, $^{131}$I, $^{134,137}$Cs were almost constant. As our knowledge, it is the first time to report such case which is very helpful to monitor the leaked nuclides from NPP by aerosol sampling in both normal operation case and emergency case.
Starting Page	1297
Ending Page	1301
Page Count	5
File Format	PDF
ISSN	02365731
Journal	Journal of Radioanalytical and Nuclear Chemistry
Volume Number	292
Issue Number	3
e-ISSN	15882780
Language	English
Publisher	Springer Netherlands
Publisher Date	2011-12-30
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	The lower limit of detection Gamma-ray emitting nuclides Radioaerosol Fukushima nuclear accident Inorganic Chemistry Physical Chemistry Nuclear Physics, Heavy Ions, Hadrons Nuclear Chemistry Diagnostic Radiology
Content Type	Text
Resource Type	Article
Subject	Spectroscopy Pollution Health, Toxicology and Mutagenesis Radiology, Nuclear Medicine and Imaging Analytical Chemistry Public Health, Environmental and Occupational Health Nuclear Energy and Engineering

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