| Main Title |
Analytical Method Comparisons by Estimates of Precision and Lower Detection Limit. |
| Author |
Holland, D. M. ;
McElroy, F. F. ;
|
| CORP Author |
Environmental Monitoring Systems Lab., Research Triangle Park, NC. |
| Year Published |
1986 |
| Report Number |
EPA/600/J-86/377; |
| Stock Number |
PB87-203089 |
| Additional Subjects |
Factor analysis ;
Comparators ;
Analyzers ;
Precision ;
Measurement ;
Measuring instruments ;
Tests Nitrogen dioxide ;
Reprints ;
Enviromental monitoring ;
Principal components analysis
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB87-203089 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
7p |
| Abstract |
The paper describes the use of principal component analysis to estimate the operating precision of several different analytical instruments or methods simultaneously measuring a common sample of a material whose actual value is unknown. This approach is advantageous when none of the analytical instruments or methods is sufficiently superior to the others to serve as a reference. It also avoids the need for costly experimental designs requiring testing of duplicate instruments. Principal component analysis utilizes the results from tests of three or more analytical instruments or methods measuring common or identical material samples to provide a composite reference value for the material that can be assumed to approximate the true analytical value. From these composite values, estimates of the operating precision for each of the instruments or methods can be developed. |
| Supplementary Notes |
Pub. in Environmental Science and Technology, v20 n11 p1157-1161 Nov 86. |
| NTIS Title Notes |
Journal article. |
| Title Annotations |
Reprint: Analytical Method Comparisons by Estimates of Precision and Lower Detection Limit. |
| PUB Date Free Form |
1986 |
| Category Codes |
68A; 99A |
| NTIS Prices |
PC A02/MF A01 |
| Primary Description |
600/08 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
723228806 |
| Origin |
NTIS |
| Type |
CAT |
