Record Display for the EPA National Library Catalog


Main Title Evaluation of the Orion divalent specific ion electrode /
Author 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 National Oceanic and Atmospheric Administration, National Ocean Survey, Test and Evaluation Laboratory ; U.S. Environmental Protection Agency, Office of Energy, Minerals, and Industry ; National Technical Information Service [distributor],
Year Published 1979
Report Number EPA-600/7-79-059
Stock Number PB-299 326
OCLC Number 05865991
Subjects Electrodes, Ion selective ; Seawater--Analysis
Additional Subjects Water analysis ; Laboratory equipment ; Magnesium ; Performance evaluation ; Electrodes ; Fresh water ; Sea water ; Design ; Calibrating ; Chemical analysis ; Ion selective electrodes ; Procedures
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 600-7-79-059 Headquarters Library/Washington,DC 11/15/2012
EJBD  EPA 600-7-79-059 c.1 Headquarters Library/Washington,DC 06/25/2013
EKCD  EPA-600/7-79-059 CEMM/GEMMD Library/Gulf Breeze,FL 08/21/2018
ESAD  EPA 600-7-79-059 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB-299 326 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation ix, 23 pages : illustrations ; 28 cm.
The Orion Divalent Cation Specific Ion Electrode No. 93-32 was evaluated for suitability in monitoring or in-situ marine applications as a magnesium ion sensor. The electrode was tested with three separate modules 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 concentration, and variability between modules. The sensor, a 'liquid ion-exchange' type, was evaluated at 10C and 25C in freshwater, synthetic seawater (35-, 20- and 5-ppt salinity), and natural waters (IAPSO Standard Seawater, Atlantic Ocean Water and Chesapeake Bay Water). A description of sensor, theory of operation, and a summary of the test results are included.
"March 1979." Includes bibliographical references (page 14). "Interagency agreement no. D5-E693, project no. EAP-78-BEA, program element no. 1 NE 625C."