Skip to main content

NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.

Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.

U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Micellar phase boundaries under the influence of ethyl alcohol

Published

Author(s)

Denis E. Bergeron

Abstract

The Compton spectrum quenching technique is used to monitor the effect of ethyl alcohol (EtOH) additions on phase boundaries in two systems. In toluenic solutions of the nonionic surfactant, Triton X-100, EtOH shifts the boundary separating the first clear phase from the first turbid phase to higher water:surfactant ratios. In a commonly used scintillant, Ultima Gold AB, the critical micelle concentration is not shifted. The molecular interactions behind the observations and implications for liquid scintillation counting are discussed.
Citation
Applied Radiation and Isotopes
Volume
109

Keywords

liquid scintillation counting, critical micelle concentration, ethanol, cocktail, microemulsion, reverse micelle

Citation

Bergeron, D. (2016), Micellar phase boundaries under the influence of ethyl alcohol, Applied Radiation and Isotopes, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=918032 (Accessed October 7, 2025)

Issues

If you have any questions about this publication or are having problems accessing it, please contact [email protected].

Created May 16, 2016, Updated February 19, 2017
Was this page helpful?