| Main Title |
Detector By-Pass Valve. |
| Author |
Cranmer., Morris ;
|
| CORP Author |
National Communicable Disease Center, Perrine, Fla. Pesticides Research Lab. |
| Year Published |
1967 |
| Stock Number |
PB-275 109 |
| Additional Subjects |
Gas chromatography ;
Gas detectors ;
Gas analysis ;
Pesticides ;
Design criteria ;
Performance evaluation ;
Chemical analysis ;
Reprints
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB-275 109 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
1p |
| Abstract |
Gas chromatographic detection systems are subject to two main sources of interference: solvent elution and liquid phase bleed. Solvent elution, especially with large injection volumes, often produces undesirable tailing, over-loading or fouling of detector, and flame extinguishment. Column liquid phase bleed causes detector and combustion tube contamination which may result in lost sensitivity, anomalous behavior and catalyst poisoning. The described problems would be solved by a system which would vent solvent, shunt column bleed, and maintain continuous detector equilibrium. Dual columns can be connected to a single detector in the usual manner with or without installation of a by-pass valve. |
| Supplementary Notes |
Pub. in Jnl. of Gas Chromatography, v6 Jun 68. |
| Availability Notes |
Included in the report, Journal Articles on Pesticide Chemical Analysis. Group 1, PB-275 107. |
| Title Annotations |
Reprint: A Detector By-Pass Valve, |
| PUB Date Free Form |
1967 |
| Category Codes |
14B; 6F; 99A |
| NTIS Prices |
(Order as PB-275 107, MF A01) |
| Primary Description |
500/01 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
323729079 |
| Origin |
NTIS |
| Type |
CAT |
