PMID: 7581178Jul 1, 1995Paper

Solid-phase reversible trap for [11C]carbon dioxide using carbon molecular sieves

Nuclear Medicine and Biology
B H MockG K Mulholland

Abstract

A simple, maintenance-free trapping technique which concentrates and purifies no-carrier-added 11CO2 from gas targets is described. The trap requires no liquid nitrogen cooling and has no moving parts besides solenoid valves. It employs carbon molecular sieves to adsorb 11CO2 selectively from gas targets at room temperature. Nitrogen, O2, CO, NO and moisture in the target gas which could interfere with subsequent radiochemical steps are not retained. Trapping efficiency of 1 g of sieve for 11CO2 from a 240 cm3 target gas dump and helium flush cycle is > 99%, and the adsorbed 11CO2 is recovered quantitatively as a small concentrated bolus from the carbon sieve trap by thermal desorption. This durable trap has performed reliably for more than 1 y with a single charge of carbon sieve. It has simplified the production, and improved the yields of several 11C-radiochemicals at this laboratory.

References

Mar 1, 1992·International Journal of Radiation Applications and Instrumentation. Part A, Applied Radiation and Isotopes·R D SmithR L Ehrenkaufer
Nov 1, 1992·International Journal of Radiation Applications and Instrumentation. Part A, Applied Radiation and Isotopes·D M Jewett
Jan 1, 1991·International Journal of Radiation Applications and Instrumentation. Part A, Applied Radiation and Isotopes·G K Mulholland
Apr 1, 1981·The International Journal of Applied Radiation and Isotopes·S J GatleyR J Nickles

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Citations

Nov 28, 2002·Nuclear Medicine and Biology·Eric D Hostetler, H Donald Burns
Jun 26, 1999·Nuclear Medicine and Biology·B H MockM T Vavrek
Jan 11, 2000·Nuclear Medicine and Biology·D R HwangM Laruelle
Jun 5, 2007·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·Sébastien TremblayStephen C Cunnane
Mar 15, 2005·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·Dilip K MaitiHarry T Chugani
Jul 2, 2005·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·Rachid NazihTimothy R Degrado
Oct 12, 2014·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·Dohyun KimDavid J Schlyer
Apr 8, 2014·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·Nicholas T Vandehey, James P O'Neil
Aug 9, 2018·Journal of Labelled Compounds & Radiopharmaceuticals·Daniel P HoltRobert F Dannals
May 16, 2013·Chemical Communications : Chem Comm·Benjamin H RotsteinNeil Vasdev

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