| Main Title |
Simple Photometer for Precise Determination of Dissolved Oxygen Concentration by the Winkler Method with Recommendations for Improving Respiration Rate Measurements in Aquatic Organisms. |
| Author |
Vargo, Sandra L. ;
Force, R. Ken ;
|
| CORP Author |
Rhode Island Univ., Kingston. Graduate School of Oceanography.;Environmental Research Lab., Narragansett, RI. |
| Year Published |
1981 |
| Report Number |
EPA-R-807795; EPA-600/J-81-531 ; ERLN-X33 |
| Stock Number |
PB82-181843 |
| Additional Subjects |
Photometers ;
Respiration ;
Aquatic animals ;
Oxygen ;
Dissolved gases ;
Monitoring ;
Sensitivity ;
Performance evaluation ;
Schematic diagrams ;
Reprints ;
Acartia tonsa
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB82-181843 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
7p |
| Abstract |
A simple inexpensive photometer designed for Winkler titration end-point detection is described. The precision of replicate dissolved oxygen measurements using this instrument was 0.06-0.22%. This high precision is needed to measure the small changes in dissolved oxygen concentration for determining the respiration rate of small aquatic organisms. Other recommendations for improving precision are also presented. |
