Main Title |
Phosphorus Concentrations in Stream-Water and Reference Samples--An Assessment of Laboratory Comparability. |
Author |
M. R. MCHALE ;
D. McChesney
|
CORP Author |
Geological Survey, Reston, VA.; Environmental Protection Agency, Washington, DC. |
Year Published |
2008 |
Report Number |
USGS/OFR-2007-1267 |
Stock Number |
PB2008-108652 |
Additional Subjects |
Phosphorus ;
Water quality ;
Soils ;
Laboratories ;
Sample preparations ;
Statistical methods ;
Data comparability ;
Objectives ;
Tables(Data) ;
Graphs (Charts) ;
Assessment comparisons ;
Concentration (Composition) ;
Precision ;
Accuracy ;
Reference samples
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB2008-108652 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
30p |
Abstract |
In 2003, a study was conducted to evaluate the accuracy and precision of 10 laboratories that analyze water-quality samples for phosphorus concentrations in the Catskill Mountain region of New York State. Many environmental studies in this region rely on data from these different laboratories for water-quality analyses, and the data may be used in watershed modeling and management decisions. Therefore, it is important to determine whether the data reported by these laboratories are of comparable accuracy and precision. Each laboratory was sent 12 samples for triplicate analysis for total phosphorus, total dissolved phosphorus, and soluble reactive phosphorus. Eight of these laboratories reported results that met comparability criteria for all samples; the remaining two laboratories met comparability criteria for only about half of the analyses. |
Supplementary Notes |
Prepared in cooperation with Environmental Protection Agency, Washington, DC. |
Availability Notes |
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PUB Date Free Form |
2008 |
Category Codes |
48G; 48E |
NTIS Prices |
PC A03 |
Document Type |
NT |
Medium |
Open-file rept |
Cataloging Source |
NTIS/MT |
Control Number |
019001370 |
Origin |
NTIS |
Type |
CAT |