| 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 |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| 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. |
| Abstract |
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. |
| Notes |
"March 1979." Includes bibliographical references (page 14). "Interagency agreement no. D5-E693, project no. EAP-78-BEA, program element no. 1 NE 625C." |
