| Main Title |
New approaches to the preservation of contaminants in water samples / |
| Author |
Saxena, J.
|
| Other Authors |
|
| CORP Author |
Syracuse Research Corp., NY. Center for Chemical Hazard Assessment.;Environmental Monitoring and Support Lab.-Cincinnati, OH. |
| Publisher |
Environmental Protection Agency, Office of Research and Development, Environmental Monitoring and Support Laboratory, |
| Year Published |
1979 |
| Report Number |
EPA 600-4-79-007; EPA-R-804609010 |
| Stock Number |
PB-293 013 |
| OCLC Number |
04787480 |
| ISBN |
pbk. |
| Subjects |
Water--Analysis
|
| Additional Subjects |
Samples ;
Preservatives ;
Sewage ;
Water pollution ;
Chemical analysis ;
Storage ;
Cargo transport ;
Nitrogen ;
Inorganic phosphates ;
Biochemical oxygen demand ;
Oils ;
Greases ;
pH ;
Antibiotics ;
Enzymes ;
Biocides ;
Substitutes ;
Stability ;
Antimicrobial agents ;
Water pollution sampling
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| EJBD |
EPA 600-4-79-007 |
c.1 |
Headquarters Library/Washington,DC |
04/02/2014 |
| ELBD ARCHIVE |
EPA 600-4-79-007 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
| ELBD |
EPA 600-4-79-007 |
|
AWBERC Library/Cincinnati,OH |
11/14/2023 |
| NTIS |
PB-293 013 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
xi, 46 pages : illustrations, figures, tables ; 28 cm |
| Abstract |
The potential of antibiotics, chemical biocides and lytic enzymes in preserving nutrients, biological oxygen demand and oil and grease in water and sewage effluents was studied. Preliminary studies concerning the effect of drugs on cell growth and oxygen utilization in samples stored at room temperature led to the selection of chlorhexidine, vantocil and many combinations each containing three antibiotics from among polymyxin B, neomycin, erythromycin, streptomycin and chloramphenicol. The effective concentration range was approximately equal to 50 micrograms/ml each antibiotic for clean waters and as high as 200 micrograms/ml each antibiotic for heavily polluted water (e.g. primary effluents). Chlorhexidine and vantocil IB stabilized nitrate and nitrite in fresh waters and relatively clean secondary effluents only. Presence of antibiotics caused interference in determination of orthophosphate. The antimicrobial agents tested interfered with BOD determination by causing inhibition of oxygen depletion and therefore were of no value for preservation of this parameter. Efforts to selectively remove and/or inactivate the drug before BOD determination were unsuccessful. Oil and grease levels were stabilized by antibiotics for up to two weeks in relatively clean waters only. The results demonstrate that antibiotics offer a viable alternative to conventional methods for preservation of some constituents and parameters in fresh water samples but not in sewage effluents. |
| Notes |
U.S. Environmental Protection Agency Grant No. Contract Number: R 804609010. "January 1979." Includes bibliographical references (pages 41-45). |
| Place Published |
Cincinnati, Ohio |
| Access Notes |
Also issued online. |
| Corporate Au Added Ent |
Environmental Monitoring and Support Laboratory (Cincinnati, Ohio),; Syracuse Research Corporation. Center for Chemical Hazard Assessment,; United States. Environmental Protection Agency. Office of Research and Development, |
| Corp Au Ser Add Ent |
United States. Environmental Protection Agency. Environmental monitoring series ; EPA-600/4-79-007. |
| Title Ser Add Ent |
Research reporting series. Environmental monitoring ; EPA-600/4-79-007. |
| PUB Date Free Form |
1979 |
| Series Title Untraced |
Environmental monitoring series ; EPA-600/4-79-007 |
| NTIS Prices |
PC A04/MF A01 |
| BIB Level |
m |
| Medium |
unmediated |
| Content |
text |
| Carrier |
volume |
| Cataloging Source |
RDA |
| Merged OCLC records |
1225691510 |
| OCLC Time Stamp |
20231102213019 |
| Language |
eng |
| SUDOCS Number |
EP 1.23/5:600/4-79-007 |
| Origin |
OCLC |
| Type |
MERGE |
| OCLC Rec Leader |
02641cam 2200517 i 45010 |
