Determination of I-129 in aerosols using pyrolysis and AgI-AgCl coprecipitation separation and accelerator mass spectrometry measurements

doi:10.1039/c8ja00248g

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	Determination of I-129 in aerosols using pyrolysis and AgI-AgCl coprecipitation separation and accelerator mass spectrometry measurements
	Zhang, Luyuan 1,2,4; Hou, Xiaolin 1,2,3,4; Fu, Yunchong1,2 ; Fang, Miao 1,2; Chen, Ning 1,2
通讯作者	Zhang, Luyuan(zhangly@ieecas.cn)
	2018-10-01
发表期刊	JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
ISSN	0267-9477
卷号	33 期号:10 页码:1729-1736
摘要	Airborne radioactive iodine is a key concern for the transport and dispersion of radioactive contamination and radiation exposure evaluation during nuclear accidents and nuclear emergency preparedness. Information about long-lived I-129 in aerosols is vital for the reconstruction of the level and distribution of short-lived and highly radiotoxic I-131, as well as for understanding the atmospheric cycling of iodine. However, aerosol I-129 concentration is difficult to measure due to its low concentration in remote areas, away from nuclear pollution sources. In this study, a novel method for the determination of I-129 in aerosols collected on a glass fiber filter was developed using high-temperature pyrolysis and AgI-AgCl coprecipitation for separation coupled with highly sensitive accelerator mass spectrometry (AMS) measurements. It is worth noting that even though the pyrolysis behaviors of various iodine species were investigated and found to be different, all of the iodine can be quantitatively recovered. Iodate was released from the aerosols through its decomposition to iodine at temperatures over 500 degrees C. The chemical yield of iodine during pyrolysis was 81.5 +/- 5.8%. The detection limit for I-129 in the aerosol samples was 1.3 x 10(4) atoms per m(3), at least reducing the required aerosol sample size by a factor of three, in contrast to the method using alkaline-ashing separation coupled to solvent extraction. For aerosol samples collected in Asia with I-129/I-127 ratios of (0.1-10) x 10(-9), a volume of 1000 m(3) air is sufficient for the determination of I-129. The developed method was used to analyse aerosol samples collected in Xi'an, an inland Chinese city. It is observed that I-129 concentrations ranged within (0.38-5.19) x 10(5) atoms per m(3), with I-129/I-127 ratios of (21.7-252) x 10(-10), which are comparable to those collected in Japan before the Fukushima nuclear accident and Spain, while much lower than those observed in Northern Europe.
DOI	10.1039/c8ja00248g
关键词[WOS]	FUKUSHIMA NUCLEAR ACCIDENT ; CARRIER-FREE IODINE ; POWER-PLANT ; SAMPLES ; SPECIATION ; ISOTOPES ; SOIL ; I-129/I-127 ; TSUKUBA ; RATIOS
收录类别	SCI ; SCI
语种	英语
资助项目	National Natural Science Foundation of China[11605207] ; National Natural Science Foundation of China[91643206] ; Technology Foundation for Selected Overseas Chinese Scholars ; Department of Human Resources and Social Security of Shaanxi Province, China ; Ministry of Science and Technology of China[2015FY110800]
WOS研究方向	Chemistry ; Spectroscopy
项目资助者	National Natural Science Foundation of China ; Technology Foundation for Selected Overseas Chinese Scholars ; Department of Human Resources and Social Security of Shaanxi Province, China ; Ministry of Science and Technology of China
WOS类目	Chemistry, Analytical ; Spectroscopy
WOS记录号	WOS:000448340200014
出版者	ROYAL SOC CHEMISTRY
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/14640
专题	加速器质谱中心
通讯作者	Zhang, Luyuan
作者单位	1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Shaanxi, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, Xian AMS Ctr, Shaanxi Key Lab Accelerator Mass Spectrometry & A, Xian 710061, Shaanxi, Peoples R China 3.Tech Univ Denmark, Ctr Nucl Technol, Riso Campus, DK-4000 Roskilde, Denmark 4.Pilot Natl Lab Marine Sci & Technol Qingdao, Open Studio Ocean Continental Climate & Environm, Qingdao 266061, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Luyuan,Hou, Xiaolin,Fu, Yunchong,et al. Determination of I-129 in aerosols using pyrolysis and AgI-AgCl coprecipitation separation and accelerator mass spectrometry measurements[J]. JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY,2018,33(10):1729-1736.
APA	Zhang, Luyuan,Hou, Xiaolin,Fu, Yunchong,Fang, Miao,&Chen, Ning.(2018).Determination of I-129 in aerosols using pyrolysis and AgI-AgCl coprecipitation separation and accelerator mass spectrometry measurements.JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY,33(10),1729-1736.
MLA	Zhang, Luyuan,et al."Determination of I-129 in aerosols using pyrolysis and AgI-AgCl coprecipitation separation and accelerator mass spectrometry measurements".JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY 33.10(2018):1729-1736.