Positron lifetime study of several chiral materials in aqueous solution

K. Süvegh; A. Domján; A. Vértes

doi:10.1007/bf02036274

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 211: Issue 1

Positron lifetime study of several chiral materials in aqueous solution

Authors:

K. Süvegh

K. Süvegh Eötvös Loránd University Department of Nuclear Chemistry P.O. Box 32 H-1518 Budapest 112 (Hungary)

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A. Domján

A. Domján Eötvös Loránd University Department of Nuclear Chemistry P.O. Box 32 H-1518 Budapest 112 (Hungary)

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A. Vértes

A. Vértes Eötvös Loránd University Department of Nuclear Chemistry P.O. Box 32 H-1518 Budapest 112 (Hungary)

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Pages:: 203–210

Online Publication Date:: 13 Aug 2005

Publication Date:: 17 Nov 1996

Article Category:: Research Article

DOI:: https://doi.org/10.1007/bf02036274

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Abstract

The most obvious symmetry breaking in Nature is the left-right asymmetry of living beings: sugars and amino acids are almost exclusively represented by one of their stereoisomers (D-isomer for sugars and L-isomer for amino acids) at the expense of other possible isomers. In our experiment we studied the aqueous solutions of tartaric acid, alanine, and cysteine in the function of temperature by positron lifetime spectroscopy. The results were compared with those obtained in pure water under similar conditions. We always observed a sharp minimum of the positron lifetime at around 41 °C in water and in the solutions of the natural stereo-isomers. On the other hand, the same minimum occurred at considerably lower temperatures in the solutions of the unnatural isomers.

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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)