Main Title |
Evaluation of a prototype instrument for determining phosphorus in water / |
Author |
Hoover, Thomas B., ;
Long., J. MacArthur
|
Other Authors |
|
CORP Author |
Environmental Research Lab., Athens, Ga. |
Publisher |
United States Environmental Protection Agency, Office of Research and Development, Environmental Research Laboratory ; Available through the National Technical Information Service, |
Year Published |
1976 |
Report Number |
EPA 600-4-76-033; EPA-ROAP-16ADN-72 |
Stock Number |
PB-262 234 |
OCLC Number |
03410785 |
Subjects |
Phosphorus--Spectral analysis ;
Flame photometry ;
Inorganic compounds
|
Additional Subjects |
Phosphorus ;
Water analysis ;
Flame photometry ;
Surface waters ;
Sewage ;
Chemical analysis ;
Performance evaluation ;
Nutrients ;
Calibrating ;
Design criteria ;
Water pollution detection
|
Internet Access |
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
EJED |
EPA 600/4-76/033 |
|
OCSPP Chemical Library/Washington,DC |
02/11/2005 |
ELBD ARCHIVE |
EPA 600-4-76-033 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
ELBD ARCHIVE |
EPA 600-4-76-033 |
|
AWBERC Library/Cincinnati,OH |
01/19/2022 |
ESAD |
EPA 600-4-76-033 |
|
Region 10 Library/Seattle,WA |
03/23/2010 |
NTIS |
PB-262 234 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
vi, 19 pages : illustrations ; 28 cm |
Abstract |
A second-generation flame spectrometer for the direct determination of phosphorus in water was evaluated. Response to phosphorus in the form of phosphoric acid was linear from 0.5 to 16 ppm phosphorus. The relative standard deviation was approximately constant at 20 percent over the range. River water and municipal sewage effluent were analyzed after the addition of phosphoric acid (1.8 ppm P) and filtration through a series of microporous membranes. Recovery of the added phosphorus averaged 70 percent for the river water and 95 percent for the sewage effluent after treatment with cation exchange resin. There was no clear relation to filter pore size in the range 5 to 0.2 micrometers. Analyses of the higher range EPA Nutrient Reference Samples (approximately 0.5 ppm P) agreed within one standard deviation with the reference values, both for inorganic and total phosphorus. The lower concentration range samples (approximate 0.1 ppm P) gave barely detectable signals. |
Notes |
"EPA 600-4-76-033." -- cover and title page "October 1976." -- cover and title page Cover title. "This report was submitted in fulfillment of ROAP 16ADN, Task 72 by the Environmental Research Laboratory, Athens, Georgia, under the sponsorship of the Environmental Protection Agency. Work was completed as of October 1975." -- page iii Includes bibliographical references (page 18). Program element no. |
Contents Notes |
"A second-generation flame spectometer for the direct determination of phosphorus in water was evaluated. Response to phosphorus in the form of phosphoric acid was linear from 0.5 to 16 ppm phosphorus. The relative standard deviation was approximately constant at 20 percent over the range. River water and municipal sewage effluent were analyzed after the addition of phosphoric acid (1.8 ppm P) and filtration through a series of microporous membranes. Recovery of the added phosphorus averaged 70 percent for the river water and 95 percent for the sewage effluent after treatment with cation exchange resin. There was no clear relation to filter pore size in the range 5 to 0.2 micrometers. Analyses of the higher range EPA Nutrient Reference Samples (approximately 0.5 ppm P) agreed within one standard deviation with the reference values, both for inorganic and total phosphorus. The lower concentration range samples (approximately 0.1 ppm P) gave barely detectable signals. Suggestions are given for further development of the instrument. -- Abstract |