| Main Title |
Interlaboratory Comparison of Thermospray and Particle Beam Liquid Chromatography/Mass Spectrometry Interfaces: Evaluation of a Chlorinated Phenoxy Acid Herbicide Liquid Chromatography/Mass Spectrometry Analysis Method. |
| Author |
Jones, T. L. ;
Betowski, L. D. ;
Lesnik, B. ;
Chiang, T. C. ;
Teberg, J. E. ;
|
| CORP Author |
Lockheed Engineering and Sciences Co., Inc., Las Vegas, NV. ;Department of Energy, Washington, DC. Lab. Management Div.;Environmental Monitoring Systems Lab., Las Vegas, NV. |
| Publisher |
c1991 |
| Year Published |
1991 |
| Report Number |
EPA-68C-00049; EPA/600/J-91/317; |
| Stock Number |
PB92-124734 |
| Additional Subjects |
Herbicides ;
Chemical analysis ;
Liquid chromatography ;
Mass spectroscopy ;
Interlaboratory comparisons ;
Pesticides ;
Chlorine organic compounds ;
Performance evaluation ;
Extraction ;
Experimental design ;
Dinoseb ;
Reprints ;
Thermospray liquid chromatography ;
Silvex ;
Propanoic acid/(trichlorophenoxy)
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB92-124734 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
7p |
| Abstract |
Seven laboratories participated in an interlaboratory evaluation of a liquid chromatography/mass spectrometry (LC/MS) method for the analysis of 10 chlorinated phenoxy acid herbicides. The focus of the evaluation was to test the intercomparability of LC/MS data obtained from two types of LC/MS interfaces (i.e., thermospray (TS) and particle beam (PB)). Eight simulated sample extracts were sent to each laboratory for LC/MS analysis. There were statistically significant differences between interfaces in the quantitative data for all analytes except 2-(2,4,5-trichlorophenoxy) propanoic acid (silvex). Particle beam exhibited a high positive bias and a low relative standard deviation at the highest sample extract concentration range, 500 micrograms/mL, while TS showed a low bias and a low relative standard deviation at the lowest sample extract concentration range, 5 micrograms/mL. Another factor of the study was to look for any performance differences between interfaces of the same type, but differing manufacturers. A statistical difference was observed, between PB interfaces, for 2-(1-methylpropyl)-4,6-dinitrophenol (dinoseb). (Copyright (c) 1991 by the American Chemical Society.) |
| Supplementary Notes |
Pub. in Environmental Science and Technology, v25 n11 1991. See also PB88-215306. Prepared in cooperation with Department of Energy, Washington, DC. Lab. Management Div. Sponsored by Environmental Monitoring Systems Lab., Las Vegas, NV. |
| NTIS Title Notes |
Journal article. |
| Title Annotations |
Reprint: Interlaboratory Comparison of Thermospray and Particle Beam Liquid Chromatography/Mass Spectrometry Interfaces: Evaluation of a Chlorinated Phenoxy Acid Herbicide Liquid Chromatography/Mass Spectrometry Analysis Method. |
| Category Codes |
68E; 99A |
| NTIS Prices |
PC A02/MF A01 |
| Primary Description |
600/07 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
203826707 |
| Origin |
NTIS |
| Type |
CAT |
