Total cyanide mass measurement with micro-ion selective electrode for determination of specific activity of carbon-11 cyanide
Abstract
In this study, we aim to directly measure the specific activity (SA) of the carbon-11 cyanide ([11C]CN¯) produced by our in-house built automated [11C]HCN production system and to identify the major sources of 12C-cyanide (12CN¯). The [11C]CN¯ is produced from [11C]CO2, which is generated by the 14N(p,α)11C nuclear reaction using a cyclotron. Direct measurement of cyanide concentrations was accomplished using a relatively inexpensive, and easy to use ion selective electrode (ISE) which offered an appropriate range of sensitivity for detecting mass. Multiple components of the [11C]HCN production system were isolated in order to determine their relative contributions to 12CN¯ mass. It was determined that the system gases were responsible for approximately 30% of the mass, and that the molecular sieve/nickel furnace unit contributed approximately 70% of the mass. Beam on target (33 µA for 1 and 10 min) did not contribute significantly to the mass. Additionally, we compared the SA of our [11C]HCN precursor determined using the ISE to the SA of our current [11C]CN¯ derived radiotracers determined by HPLC to assure there was no significant difference between the two methods. These results are the first reported use of an ion selective electrode to determine the SA of no-carrier-added cyanidemore »
- Authors:
-
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Publication Date:
- Research Org.:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Biological and Environmental Research (BER)
- OSTI Identifier:
- 1221753
- Alternate Identifier(s):
- OSTI ID: 1250917
- Report Number(s):
- BNL-108378-2015-JA
Journal ID: ISSN 0969-8043; R&D Project: 06218; KP1602010
- Grant/Contract Number:
- AC02-98CH10886
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- Applied Radiation and Isotopes
- Additional Journal Information:
- Journal Volume: 102; Journal Issue: C; Journal ID: ISSN 0969-8043
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING; carbon-11 cyanide; automated [11C]HCN production system; micro ion selective electrode; specific activity
Citation Formats
Shea, Colleen, Alexoff, David L., Kim, Dohyun, Hoque, Ruma, Schueller, Michael J., Fowler, Joanna S., and Qu, Wenchao. Total cyanide mass measurement with micro-ion selective electrode for determination of specific activity of carbon-11 cyanide. United States: N. p., 2015.
Web. doi:10.1016/j.apradiso.2015.04.014.
Shea, Colleen, Alexoff, David L., Kim, Dohyun, Hoque, Ruma, Schueller, Michael J., Fowler, Joanna S., & Qu, Wenchao. Total cyanide mass measurement with micro-ion selective electrode for determination of specific activity of carbon-11 cyanide. United States. https://doi.org/10.1016/j.apradiso.2015.04.014
Shea, Colleen, Alexoff, David L., Kim, Dohyun, Hoque, Ruma, Schueller, Michael J., Fowler, Joanna S., and Qu, Wenchao. 2015.
"Total cyanide mass measurement with micro-ion selective electrode for determination of specific activity of carbon-11 cyanide". United States. https://doi.org/10.1016/j.apradiso.2015.04.014. https://www.osti.gov/servlets/purl/1221753.
@article{osti_1221753,
title = {Total cyanide mass measurement with micro-ion selective electrode for determination of specific activity of carbon-11 cyanide},
author = {Shea, Colleen and Alexoff, David L. and Kim, Dohyun and Hoque, Ruma and Schueller, Michael J. and Fowler, Joanna S. and Qu, Wenchao},
abstractNote = {In this study, we aim to directly measure the specific activity (SA) of the carbon-11 cyanide ([11C]CN¯) produced by our in-house built automated [11C]HCN production system and to identify the major sources of 12C-cyanide (12CN¯). The [11C]CN¯ is produced from [11C]CO2, which is generated by the 14N(p,α)11C nuclear reaction using a cyclotron. Direct measurement of cyanide concentrations was accomplished using a relatively inexpensive, and easy to use ion selective electrode (ISE) which offered an appropriate range of sensitivity for detecting mass. Multiple components of the [11C]HCN production system were isolated in order to determine their relative contributions to 12CN¯ mass. It was determined that the system gases were responsible for approximately 30% of the mass, and that the molecular sieve/nickel furnace unit contributed approximately 70% of the mass. Beam on target (33 µA for 1 and 10 min) did not contribute significantly to the mass. Additionally, we compared the SA of our [11C]HCN precursor determined using the ISE to the SA of our current [11C]CN¯ derived radiotracers determined by HPLC to assure there was no significant difference between the two methods. These results are the first reported use of an ion selective electrode to determine the SA of no-carrier-added cyanide ion, and clearly show that it is a valuable, inexpensive and readily available tool suitable for this purpose.},
doi = {10.1016/j.apradiso.2015.04.014},
url = {https://www.osti.gov/biblio/1221753},
journal = {Applied Radiation and Isotopes},
issn = {0969-8043},
number = C,
volume = 102,
place = {United States},
year = {Sat Apr 25 00:00:00 EDT 2015},
month = {Sat Apr 25 00:00:00 EDT 2015}
}
Web of Science
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