Record Display for the EPA National Library Catalog


Main Title Test and evaluation of potassium sensors in fresh- and saltwater /
Author Ward, Gray K. ; Ward, Gary K.
CORP Author National Ocean Survey, Rockville, MD. Test and Evaluation Lab.;Environmental Protection Agency, Washington, DC. Office of Energy, Minerals and Industry.
Publisher U.S. Environmental Protection Agency, Office of Research and Development, Office of Energy, Minierals, and Industry ; Available through the National Technical Information Service,
Year Published 1979
Report Number EPA/600/7-79/057;
Stock Number PB-299 266
OCLC Number 05866073
Subjects Water quality--Measurement ; Potassium ; Electrodes, Ion selective ; Seawater--Analysis--Instruments
Additional Subjects Water analysis ; Laboratory equipment ; Potassium ; Electrodes ; Chemical analysis ; Sampling ; Water pollution ; Performance evaluation ; Monitoring ; Potentiometry ; Sea water ; Fresh water ; Sensors ; Ion selective electrodes ; Water quality ; Water pollution detection
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA 600/7-79-057 c.1 Headquarters Library/Washington,DC 06/25/2013
EKCD  EPA-600/7-79-057 CEMM/GEMMD Library/Gulf Breeze,FL 08/21/2018
ELBD ARCHIVE EPA 600/7-79-057 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ELBD RPS EPA 600-7-79-057 repository copy AWBERC Library/Cincinnati,OH 05/08/2019
ESAD  EPA 600-7-79-057 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB-299 266 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 51 pages : illustrations ; 27 cm.
Three types of potassium ion-selective electrodes were evaluated for suitability in monitoring or in-situ measurement applications. Each sensor was tested for the following parameters: accuracy, precision, temperature dependence, short and long-term stability, durability, sensitivity to variations in light intensity and flow conditions, response time as a function of temperature and potassium concentration, and variations between different manufacturers. The three potassium sensors (glass-membrane single electrode, glass-membrane combination electrode and liquid ion-exchange electrode) were evaluated at 10C and 25C in freshwater, synthetic seawater and natural seawater (35-, 20- and 5-ppt salinity). A description of the devices, the theory of their operation, and a summary of the test results are included.
Interagency agreement no. D5-E693. Includes bibliographical references (pages 31-32).