A CONVENIENT CRYOGENIC TRAP WITH LIQUID-NITROGEN FOR THE CONCENTRATION OF [C-11] CO2

Authors
IWATA R IDO T KOVACS Z MAHUNKA I
Citation
R. Iwata et al., A CONVENIENT CRYOGENIC TRAP WITH LIQUID-NITROGEN FOR THE CONCENTRATION OF [C-11] CO2, Applied radiation and isotopes, 48(4), 1997, pp. 483-485
Citations number
8
Categorie Soggetti
Nuclear Sciences & Tecnology","Radiology,Nuclear Medicine & Medical Imaging","Chemistry Inorganic & Nuclear
Journal title
Applied radiation and isotopes
ISSN journal
09698043 → ACNP
Volume
48
Issue
4
Year of publication
1997
Pages
483 - 485
Database
ISI
SICI code
0969-8043(1997)48:4<483:ACCTWL>2.0.ZU;2-K
Abstract
A simple, inexpensive cryogenic trap for the concentration of [C-11]CO 2 with liquid nitrogen instead of liquid argon was developed. Trapping temperatures slightly higher than the boiling point of liquid nitroge n (-195.8 degrees C) were achieved by utilizing a temperature gradient formed by heat conduction. Trapping efficiency was > 98% and the [C-1 1]CO2 was thus conveniently concentrated in a small volume of carrier gas. (C) 1997 Elsevier Science Ltd.