| Main Title |
Liquid Chromatograph/Mass Spectrometer Interface with Continuous Sample Preconcentration. |
| Author |
Christensen, R. G. ;
Hertz, H. S. ;
Meiselman, S. ;
White, E. ;
|
| CORP Author |
National Bureau of Standards, Washington, DC.;Environmental Protection Agency, Washington, DC. |
| Year Published |
1981 |
| Stock Number |
PB81-178824 |
| Additional Subjects |
Mass spectroscopy ;
Sampling ;
Evaporation ;
Concentration(Composition) ;
Aromatic polycyclic hydrocarbons ;
Phenols ;
Performance evaluation ;
Design criteria ;
Reprints ;
Liquid chromatography
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB81-178824 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
4p |
| Abstract |
A liquid chromatograph/mass spectrometer system which performs enrichment of the sample in the effluent of a conventional liquid chromatograph prior to its being introduced into a differentially pumped quadrupole mass spectrometer is described. The effluent from the liquid chromatograph is concentrated by evaporation of most of the solvent. Solvent evaporation is accomplished by allowing the effluent to flow down an electrically heated wire with the current to the wire controlled by a feedback loop from a volume-sensing photocell. The concentrated effluent flows through a very small needle valve which regulates the flow into and thereby the pressure inside the mass spectrometer. The valve is constructed such that liquid is sprayed into the ion source of the mass spectrometer. The application of the system to polynuclear aromatic hydrocarbon characterization and to quantitation of phenolic compounds in alternate fuels is shown. |
| Supplementary Notes |
Sponsored in part by Environmental Protection Agency, Washington, DC. |
| Availability Notes |
Pub. in Analytical Chemistry 53, n2 p171-174 Feb 81. |
| NTIS Title Notes |
Final rept.. |
| Title Annotations |
Reprint: Liquid Chromatograph/Mass Spectrometer Interface with Continuous Sample Preconcentration. |
| PUB Date Free Form |
Feb 81 |
| Category Codes |
14B; 99A; 86V |
| NTIS Prices |
Not available NTIS |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
323795265 |
| Origin |
NTIS |
| Type |
CAT |
