Influence of gamma irradiation on uranium determination by Arsenazo III in the presence of Fe(II)/Fe(III)

doi:10.1016/j.chemosphere.2013.12.094

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	Influence of gamma irradiation on uranium determination by Arsenazo III in the presence of Fe(II)/Fe(III)
	Zheng, Zhong 1; Kang, Mingliang 1; Wang, Chunli 1; Liu, Chunli 1; Grambow, Bernd 2; Duro, Lara 3; Suzuki-Muresan, Tomo 2
刊名	CHEMOSPHERE
	2014-07-01
卷号	107 页码:373-378
关键词	Decomposition Arsenazo Iii Gamma Irradiation Fenton Reaction u(Vi) Fe(Ii)/Fe(Iii)
ISSN号	0045-6535
DOI	10.1016/j.chemosphere.2013.12.094
英文摘要	Arsenazo III is a widely used reagent for the concentration measurement of uranium and other actinides in aqueous samples. This study indicates that, for routine aqueous samples, due to the strong complexing ability with Arsenazo III, Fe(III) can significantly decrease the UV-Vis absorbance of the U(VI)-Arsenazo III complex, whereas the influence of Fe(II) on the absorbance is negligible. However, when Fe(II) is present in a gamma-irradiated U(VI) aqueous sample, it can give rise to the Fenton reaction, which produces oxidizing radicals that decompose the subsequently added Arsenazo III, leading to a sharp decrease in the absorbance of the U(VI)-Arsenazo III complex. The decrease in absorbance depends on the iron content and irradiation dose. Furthermore, the oxidizing radicals from the Fenton reaction induced by gamma irradiation can be continually produced. Even if the irradiated solution has been aged for more than one month in the absence of light at room temperature and without the exclusion of oxygen, the reactivity of the radicals did not decrease toward the subsequently added Arsenazo Ill. This finding demonstrates that the presence of Fe(II) in gamma-irradiated U(VI) aqueous samples can lead to incorrect U(VI) measurement using the Arsenazo III method, and a new method needs to be developed for the quantitative determination of U(VI) in the presence of gamma radiation and ferrous iron. (C) 2014 Elsevier Ltd. All rights reserved.
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000337929600048
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/51777]
专题	中国科学院化学研究所
通讯作者	Liu, Chunli
作者单位	1.Peking Univ, Beijing Natl Lab Mol Sci, Coll Chem & Mol Engn, Fundamental Sci Lab Radiochem & Radiat Chem, Beijing 100871, Peoples R China 2.Univ Nantes, Ecole Mines Nantes, CNRS IN2P3, SUBATECH,Unite Mixte Rech 6457, F-44307 Nantes 03, France 3.AMPHOS21, E-08019 Barcelona, Spain
推荐引用方式 GB/T 7714	Zheng, Zhong,Kang, Mingliang,Wang, Chunli,et al. Influence of gamma irradiation on uranium determination by Arsenazo III in the presence of Fe(II)/Fe(III)[J]. CHEMOSPHERE,2014,107:373-378.
APA	Zheng, Zhong.,Kang, Mingliang.,Wang, Chunli.,Liu, Chunli.,Grambow, Bernd.,...&Suzuki-Muresan, Tomo.(2014).Influence of gamma irradiation on uranium determination by Arsenazo III in the presence of Fe(II)/Fe(III).CHEMOSPHERE,107,373-378.
MLA	Zheng, Zhong,et al."Influence of gamma irradiation on uranium determination by Arsenazo III in the presence of Fe(II)/Fe(III)".CHEMOSPHERE 107(2014):373-378.