DEVELOPMENT OF HIGHLY SENSITIVE TECHNIQUES FOR DETERMINATION OF CONCENTRATIONS OF FISSION MATERIALS IN WATER MEDIA USING THIN-LAYER INORGANIC SORBENTS AND PLASTIC TRACK DETECTORS / DJAKOV AA,ROSTOVTSEV VJ,BETENEKOV ND,IPATOVA EG // NUCLEAR TRACKS AND RADIATION MEASUREMENTS. - 1993. - V. 21, l. 3. - P. 349-351.

ISSN/EISSN:

0735-245X / нет данных

Type:

Article

Abstract:

A technique for determining the uranium concentration in the VVER-1000 primary coolant and natural fresh water was developed. Thin-layer inorganic sorbents based on Ti and Ce hydroxides (thickness being tens of mug cm-2) were used for increasing the uranium concentration. After exposure in the experimental solution, thin-layer inorganic sorbents were irradiated by thermal neutrons when positioned in close contact with plastic track detectors; the latter were then etched electrochemically. A Lavsan film, 180 mum thick, was used as a detector for fission fragments. Detection sensitivity for uranium in ammonia-boron-potassium solution and distillate is a hundred or a thousand times higher than for the case of the track detector irradiated by neutrons directly in the solution. A detection limit for uranium in solutions is no worse than 3 x 10(-12) g cm-3. It is defined, mainly, by a natural contamination of the sorbent by uranium. High sensitivity, a low detection limit, and simplicity of the technique in practice make it feasible for solving the problems of nuclear reactor radiation safety, radio-ecology and other research fields.

Author keywords:

нет данных

DOI:

10.1016/0969-8078(93)90228-V

Web of Science ID:

ISI:A1993MT25000011

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	JUL
Publisher	PERGAMON-ELSEVIER SCIENCE LTD
Address	THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB
Language	English
Research-Areas	Nuclear Science \& Technology
Web-of-Science-Categories	Nuclear Science \& Technology
ResearcherID-Numbers	Betenekov, Nickolay/A-9344-2014
Number-of-Cited-References	9
Usage-Count-Since-2013	3
Doc-Delivery-Number	MT250