Main Title |
Water chlorine (residual) no. 2 : report number 40 ; report of a study conducted by Analytical Reference Service / |
Author |
Lishka, Raymond J.
|
Other Authors |
|
CORP Author |
United States. Environmental Health Service. Bureau of Water Hygiene. Analytical Reference Service.; United States. Environmental Protection Agency. Office of Water Programs. |
Publisher |
U.S. Environmental Protection Agency, Office of Water Programs, |
Year Published |
1971 |
Report Number |
EPA 800-R-71-009 |
OCLC Number |
06505939 |
Subjects |
Water--Analysis ;
Water--Pollution ;
Chlorine
|
Additional Subjects |
Water--Analysis ;
Water--Pollution ;
Chlorine
|
Internet Access |
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
EJDM |
QD142.L58 |
|
Env Science Center Library/Ft Meade,MD |
01/01/1988 |
ELBD ARCHIVE |
EPA 800-R-71-009 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
ELBD ARCHIVE |
EPA 800-R-71-009 |
|
AWBERC Library/Cincinnati,OH |
06/03/2024 |
ESAD |
EPA 1013 |
|
Region 10 Library/Seattle,WA |
09/20/1991 |
|
Collation |
97 pages : charts, graphs ; 24 cm |
Notes |
"EPA 800-R-71-009." Includes bibliographical references. |
Contents Notes |
In this study each participant was shipped four sealed glass ampoules of concentrated solution which when diluted according to instructions, provided two samples containing free chlorine and one containing combined chlorine. Each analyst was requested to use two preselected methods from the seven being studied but unfortunately not all complied and although 71 participants submitted results, only seven were submitted for the leuco crystal violet method; whereas sixteen to thirty results were obtained for each of the other methods. Statistical analysis of these results indicated that the best accuracy and precision was obtained by leuco crystal violet and the stabilized neutral orthotolodine (SNORT) procedures, followed by DPD-titrimetric, amperometric titration, DPD-colorimetric and methyl orange. By far the poorest was the orthotolidine-arsenite (OTA) procedure. |