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Time-resolved luminescence spectroscopy of trace uranyl in wet sand

Abstract

The objective of the project was to develop a technique to observe and characterize the behaviour of uranium in unsaturated groundwater flow systems, particularly with regard to unstable ``fingered`` flow, which could drastically reduce time of travel. The actual experimental work described was a study of the feasibility of detecting uranyl at the parts-per-billion level in aqueous solution by means of its luminescence spectrum. A high-power UV laser was used to excite aqueous uranyl in a wet sand mixture; the characteristic green phosphorescence emitted in the decay transition was detected by a photomultiplier tube; and the amplified signal was sent to an oscilloscope in communication with Macintosh data acquisition software. At the time of the conference, a more sophisticated sample configuration for imaging the flow of uranyl was already under development. 5 refs., 3 figs.
Authors:
Freed, D [1] 
  1. Massachusetts Inst. of Tech., Cambridge, MA (United States)
Publication Date:
Dec 31, 1993
Product Type:
Conference
Report Number:
INIS-CA-0009; CONF-9304317-
Reference Number:
SCA: 400102; 540230; 052002; PA: AIX-28:056398; EDB-97:119070; SN: 97001840871
Resource Relation:
Conference: 18. annual student conference CNA/CNS, Montreal (Canada), 2-3 Apr 1993; Other Information: PBD: 1993; Related Information: Is Part Of Proceedings of the 18. annual student conference CNA/CNS; Tye, P. [ed.]; PB: 239 p.
Subject:
40 CHEMISTRY; 54 ENVIRONMENTAL SCIENCES; 05 NUCLEAR FUELS; URANYL COMPOUNDS; DETECTION; FLUORESCENCE SPECTROSCOPY; AQUEOUS SOLUTIONS; CHEMICAL ANALYSIS; FEASIBILITY STUDIES; FLOW RATE; GROUND WATER; PHOSPHORESCENCE; SAND; TRACE AMOUNTS
OSTI ID:
517034
Research Organizations:
Canadian Nuclear Society, Toronto, ON (Canada); Canadian Nuclear Association, Toronto, ON (Canada)
Country of Origin:
Canada
Language:
English
Other Identifying Numbers:
Other: ON: DE97638270; TRN: CA9700555056398
Availability:
INIS; OSTI as DE97638270
Submitting Site:
INIS
Size:
pp. 184-192
Announcement Date:
Sep 22, 1997

Citation Formats

Freed, D. Time-resolved luminescence spectroscopy of trace uranyl in wet sand. Canada: N. p., 1993. Web.
Freed, D. Time-resolved luminescence spectroscopy of trace uranyl in wet sand. Canada.
Freed, D. 1993. "Time-resolved luminescence spectroscopy of trace uranyl in wet sand." Canada.
@misc{etde_517034,
title = {Time-resolved luminescence spectroscopy of trace uranyl in wet sand}
author = {Freed, D}
abstractNote = {The objective of the project was to develop a technique to observe and characterize the behaviour of uranium in unsaturated groundwater flow systems, particularly with regard to unstable ``fingered`` flow, which could drastically reduce time of travel. The actual experimental work described was a study of the feasibility of detecting uranyl at the parts-per-billion level in aqueous solution by means of its luminescence spectrum. A high-power UV laser was used to excite aqueous uranyl in a wet sand mixture; the characteristic green phosphorescence emitted in the decay transition was detected by a photomultiplier tube; and the amplified signal was sent to an oscilloscope in communication with Macintosh data acquisition software. At the time of the conference, a more sophisticated sample configuration for imaging the flow of uranyl was already under development. 5 refs., 3 figs.}
place = {Canada}
year = {1993}
month = {Dec}
}