Gas-phase isothermal chromatography with short-lived technetium isotopes

doi:10.1524/ract.2010.1724

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	Gas-phase isothermal chromatography with short-lived technetium isotopes
	Li, X. -F.1; Lin, M. -S.1,2; Qin, Z.1 ; Lei, F. -A.1; Guo, J. -S.1; Zhang, L. -N.1; Ding, H. -J.1; Fan, F. -L.1; Bai, J.1 ; Wu, X. -L.1
刊名	RADIOCHIMICA ACTA
	2010
卷号	98 期号:6 页码:321-326
关键词	Short-lived isotopes Technetium trioxide Isothermal gas chromatography Adsorption enthalpy
ISSN号	0033-8230
DOI	10.1524/ract.2010.1724
英文摘要	In order to study the gas-phase chemical behavior of transactinides, an on-line isothermal chromatography apparatus has been developed and applied to separate short-lived technetium isotopes in the form of TcO(3) from fission products. The fission products from a (252)Cf source were continuously and rapidly transported through the capillary to the isothermal chromatography apparatus using the N(2)/KBr gas-jet techniques. Volatile oxide molecules were formed at the reaction zone kept at 900 degrees C since a trace amount of oxygen existed in the N(2) carrier gas. With the new developed isothermal chromatography apparatus, a selective separation of Tc from fission products was achieved. After isothermal chromatographic separation, (101,103,104,105,106,107,108)Tc were dominantly observed together with their Ru daughters in the gamma-spectrum, The chemical yields of (101)Tc, and (104)Tc and (105)Tc isotopes with longer half-lives are about 55-57%, and those of (103)Tc, (106)Tc and (108)Tc isotopes with shorter half-lives dropped down to 25-28%. The adsorption enthalpy of the investigated compounds on quartz surfaces was determined to be -150 +/- 5 kJ/mol by fitting the measured retention curves with a Monte Carlo model. The observed species of technetium oxide is attributed to TcO(3), which is in good agreement with previous experimental results. That means our system worked properly and it can be used to investigate the gas-phase chemical behavior of transactinides.
资助项目	National Natural Science Foundation of China[10575122] ; National Natural Science Foundation of China[10705035] ; Major State Basic Research Development Program[2007CB 815000]
WOS关键词	SEABORGIUM ; SEPARATION ; CF-252 ; ELEMENT-105 ; CHEMISTRY ; BROMIDES
WOS研究方向	Chemistry ; Nuclear Science & Technology
语种	英语
出版者	OLDENBOURG VERLAG
WOS记录号	WOS:000279279000002
资助机构	National Natural Science Foundation of China ; Major State Basic Research Development Program
公开日期	2011-05-16
内容类型	期刊论文
源URL	[http://ir.imp.cas.cn/handle/113462/8195]
专题	近代物理研究所_近代物理研究所知识存储（2010之前）近代物理研究所_实验物理中心
通讯作者	Qin, Z.
作者单位	1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Li, X. -F.,Lin, M. -S.,Qin, Z.,et al. Gas-phase isothermal chromatography with short-lived technetium isotopes[J]. RADIOCHIMICA ACTA,2010,98(6):321-326.
APA	Li, X. -F..,Lin, M. -S..,Qin, Z..,Lei, F. -A..,Guo, J. -S..,...&Wu, X. -L..(2010).Gas-phase isothermal chromatography with short-lived technetium isotopes.RADIOCHIMICA ACTA,98(6),321-326.
MLA	Li, X. -F.,et al."Gas-phase isothermal chromatography with short-lived technetium isotopes".RADIOCHIMICA ACTA 98.6(2010):321-326.