Main Title |
Identifying sources of subsurface nitrate pollution with stable nitrogen isotopes / |
Author |
Wolterink, Timothy J., ;
Williamson, Hugh J. ;
Jones, David C. ;
Grimshaw, Thomas W. ;
Holland, W. F.
|
Other Authors |
|
CORP Author |
Radian Corp., Austin, TX.;Robert S. Kerr Environmental Research Lab., Ada, OK. |
Publisher |
Robert S. Kerr Environmental Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, |
Year Published |
1979 |
Report Number |
EPA-600/4-79-050; RAD-78-200-155-15; EPA-68-03-2450 |
Stock Number |
PB80-102064 |
OCLC Number |
06023773 |
Subjects |
Nitrates ;
Groundwater--Pollution--United States ;
Water, Underground--Pollution--United States
|
Additional Subjects |
Ground water ;
Inorganic nitrates ;
Isotopic labeling ;
Soil analysis ;
Water analysis ;
Sources ;
Water pollution ;
Chemical analysis ;
Sampling ;
Sites ;
Laboratory equipment ;
Water pollution detection ;
Water pollution sampling
|
Internet Access |
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
EJBD |
EPA 600-4-79-050 |
|
Headquarters Library/Washington,DC |
09/15/2014 |
EKBD |
EPA-600/4-79-050 |
|
Research Triangle Park Library/RTP, NC |
08/29/2003 |
ELBD ARCHIVE |
EPA 600-4-79-050 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
DISPERSAL |
EMBD |
EPA/600/4-79/050 |
|
NRMRL/GWERD Library/Ada,OK |
09/29/1995 |
ERAD |
EPA 600/4-79-050 |
|
Region 9 Library/San Francisco,CA |
10/29/2012 |
ESAD |
EPA 600-4-79-050 |
|
Region 10 Library/Seattle,WA |
03/23/2010 |
NTIS |
PB80-102064 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
xi, 151 pages : illustrations, figures, tables ; 28 cm. |
Abstract |
This report describes the methods, results, conclusions, and recommendations of an investigation of a technique to identify sources of nitrate in ground water. A discussion of the theoretical basis of the technique is also provided. Over 300 soil and ground water samples were collected for this study. The samples are from numerous sites around the United States, representing a variety of environmental conditions. The nitrate in 66 of these samples was separated from other nitrogen species, converted to N2 gas, purified, and analyzed to determine the ratio (15)N/(14)N. These data were combined with the results of analyses performed previously by Jones (1) and Kreitler (2). Standard statistical techniques were used to analyze the observed variations in delta (15)N values, with respect to several nitrate sources and various environmental factors. It was found that nitrates from feedlots, barnyards and septic tanks can be distinguished from natural soil nitrates on the basis of their delta (15)N values. They cannot, however, be distinguished from each other. Environmental factors contributed to the observed variation in delta (15)N values. |
Notes |
"August 1979." U.S. Environmental Protection Contract No. Contract Number: 68-03-2450." Includes bibliographical references (pages 77-78) |