X- and gamma-radiolysis of phosphate esters. Electron spin resonance study by the spin trap technique

J. Kuruc; V. Zubarev; F. Macášek

doi:10.1007/bf02164863

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 127: Issue 3

X- and gamma-radiolysis of phosphate esters. Electron spin resonance study by the spin trap technique

Authors:

J. Kuruc

J. Kuruc Comenius University Institute of Chemistry 842 15 Bratislava Czechoslovakia

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V. Zubarev

V. Zubarev The State University of Moscow Faculty of Chemistry 117234 Moscow USSR

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F. Macášek

F. Macášek Comenius University Department of Nuclear Chemistry, Faculty of Science 84215 Bratislava Czechoslovakia

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Pages:: 177–192

Online Publication Date:: 27 Sep 2005

Publication Date:: 17 Jun 1988

Article Category:: Research Article

DOI:: https://doi.org/10.1007/bf02164863

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Abstract

Radicals formed at X- and -radiolysis of glass and liquid tri-n-butylphosphate /TBP/, di-n-butylphosphate /DBP/, di/2-ethylhexyl/phosphoric acid /DEHPA/, tri-p-tolylphosphate /TTP/ and di-n-butyl-n-butyl phopsphonate /DBBPN/ were studied using the technique of spin trap using C-phenyl-N-tert. butylnitrone /PBN/ and 2-methyl-2-nitrosopropane /MNP/ as spin trap agents. When using PBN, nitroxyl radicals generated by the spin trap of hydrogen atoms and labile radicals of phosphates or phosphonate were identified after irradiation in vacuum. Radiation-chemical yield of spin adducts was observed, as well as their thermal stability at 293 K, rate constants and half-time of decay and free activation energy of the decay of spin adducts. Mechanism of generation and decay of nitroxyl radicals is discussed. The spin adducts with MNP have a relatively low stability and superposition of some adducts spectra.

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Journal of Radioanalytical and Nuclear Chemistry

Print ISSN:: 0236-5731

Online ISSN:: 1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language	English
Size	A4
Year of Foundation	1968
Volumes per Year	1
Issues per Year	12
Founder	Akadémiai Kiadó
Founder's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher	Akadémiai Kiadó Springer Nature Switzerland AG
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible Publisher	Chief Executive Officer, Akadémiai Kiadó
ISSN	0236-5731 (Print)
ISSN	1588-2780 (Online)