Matches in SemOpenAlex for { <https://semopenalex.org/work/W2009164056> ?p ?o ?g. }
Showing items 1 to 88 of
88
with 100 items per page.
- W2009164056 endingPage "5703" @default.
- W2009164056 startingPage "5698" @default.
- W2009164056 abstract "The response mechanisms of a thermionic detector with enhanced nitrogen selectivity operating in an inert gas environment were investigated. According to accepted theory, the analyte has to contain electronegative functional groups in order for negative ions to be formed by the extraction of electrons from the thermionic source. This leads to a selective detector response for compounds containing nitro groups or multiple halogens. However, in the tests described here, polycyclic aromatic nitrogen hydrocarbons (PANHs), acridines, and carbazoles were used as reference substances. These compounds contain no electronegative functional groups. None of the investigated acridines exhibited any response from the detector, but carbazoles generated a strong structure-related detector response. By examining partial charges for all hydrogens of all individual carbazoles and acridine, it was demonstrated that the acidic hydrogen atom attached to the nitrogen heteroatom of the carbazoles has a strong influence on the detector response. Ionization of carbazoles may occur by dissociation of the nitrogen-hydrogen bond during contact with the thermionic surface. Support for this theory was provided by the linear relationship between the relative detector response and the deprotonization energy of the carbazoles (coefficients of determination of 0.90 and 0.98 for linear and quadratic models, respectively, were obtained). Further, there appeared to be no linear relationship between the detector response and electron affinity of the carbazoles, (R2 value, 0.32). Thus, the mechanism involved in ionization of the carbazoles is probably not direct electron transfer from the thermionic surface to the carbazoles. Principal component analysis (PCA) showed that the thermal conductivity of chemically inert detector gases also has an influence on the detector response. The investigated gases were helium, neon, nitrogen, carbon dioxide, and argon. It was found that thermal conductivity can be used to rank the detector response for the carbazoles, and there was no discernible response when helium, which has the highest thermal conductivity, was used as the detector gas." @default.
- W2009164056 created "2016-06-24" @default.
- W2009164056 creator A5046718974 @default.
- W2009164056 creator A5056081805 @default.
- W2009164056 creator A5091864782 @default.
- W2009164056 date "2001-11-03" @default.
- W2009164056 modified "2023-10-02" @default.
- W2009164056 title "Response Mechanisms of Thermionic Detectors with Enhanced Nitrogen Selectivity" @default.
- W2009164056 cites W1980280499 @default.
- W2009164056 cites W1988957026 @default.
- W2009164056 cites W2041353155 @default.
- W2009164056 cites W2085994971 @default.
- W2009164056 cites W2087691455 @default.
- W2009164056 cites W2089468765 @default.
- W2009164056 cites W2143981217 @default.
- W2009164056 cites W2315127256 @default.
- W2009164056 cites W2315139523 @default.
- W2009164056 cites W2317719211 @default.
- W2009164056 cites W2318948614 @default.
- W2009164056 doi "https://doi.org/10.1021/ac010204d" @default.
- W2009164056 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/11774910" @default.
- W2009164056 hasPublicationYear "2001" @default.
- W2009164056 type Work @default.
- W2009164056 sameAs 2009164056 @default.
- W2009164056 citedByCount "15" @default.
- W2009164056 countsByYear W20091640562012 @default.
- W2009164056 countsByYear W20091640562015 @default.
- W2009164056 countsByYear W20091640562016 @default.
- W2009164056 countsByYear W20091640562019 @default.
- W2009164056 countsByYear W20091640562021 @default.
- W2009164056 crossrefType "journal-article" @default.
- W2009164056 hasAuthorship W2009164056A5046718974 @default.
- W2009164056 hasAuthorship W2009164056A5056081805 @default.
- W2009164056 hasAuthorship W2009164056A5091864782 @default.
- W2009164056 hasConcept C113196181 @default.
- W2009164056 hasConcept C118792377 @default.
- W2009164056 hasConcept C121332964 @default.
- W2009164056 hasConcept C143979616 @default.
- W2009164056 hasConcept C145148216 @default.
- W2009164056 hasConcept C147120987 @default.
- W2009164056 hasConcept C147789679 @default.
- W2009164056 hasConcept C161790260 @default.
- W2009164056 hasConcept C178790620 @default.
- W2009164056 hasConcept C185592680 @default.
- W2009164056 hasConcept C198291218 @default.
- W2009164056 hasConcept C2781238429 @default.
- W2009164056 hasConcept C32909587 @default.
- W2009164056 hasConcept C537208039 @default.
- W2009164056 hasConcept C62520636 @default.
- W2009164056 hasConcept C75473681 @default.
- W2009164056 hasConceptScore W2009164056C113196181 @default.
- W2009164056 hasConceptScore W2009164056C118792377 @default.
- W2009164056 hasConceptScore W2009164056C121332964 @default.
- W2009164056 hasConceptScore W2009164056C143979616 @default.
- W2009164056 hasConceptScore W2009164056C145148216 @default.
- W2009164056 hasConceptScore W2009164056C147120987 @default.
- W2009164056 hasConceptScore W2009164056C147789679 @default.
- W2009164056 hasConceptScore W2009164056C161790260 @default.
- W2009164056 hasConceptScore W2009164056C178790620 @default.
- W2009164056 hasConceptScore W2009164056C185592680 @default.
- W2009164056 hasConceptScore W2009164056C198291218 @default.
- W2009164056 hasConceptScore W2009164056C2781238429 @default.
- W2009164056 hasConceptScore W2009164056C32909587 @default.
- W2009164056 hasConceptScore W2009164056C537208039 @default.
- W2009164056 hasConceptScore W2009164056C62520636 @default.
- W2009164056 hasConceptScore W2009164056C75473681 @default.
- W2009164056 hasIssue "23" @default.
- W2009164056 hasLocation W20091640561 @default.
- W2009164056 hasLocation W20091640562 @default.
- W2009164056 hasOpenAccess W2009164056 @default.
- W2009164056 hasPrimaryLocation W20091640561 @default.
- W2009164056 hasRelatedWork W2021939235 @default.
- W2009164056 hasRelatedWork W2041300243 @default.
- W2009164056 hasRelatedWork W2055605975 @default.
- W2009164056 hasRelatedWork W2066164753 @default.
- W2009164056 hasRelatedWork W2160162460 @default.
- W2009164056 hasRelatedWork W2950422474 @default.
- W2009164056 hasRelatedWork W2995525177 @default.
- W2009164056 hasRelatedWork W3005527239 @default.
- W2009164056 hasRelatedWork W3200462162 @default.
- W2009164056 hasRelatedWork W4240339722 @default.
- W2009164056 hasVolume "73" @default.
- W2009164056 isParatext "false" @default.
- W2009164056 isRetracted "false" @default.
- W2009164056 magId "2009164056" @default.
- W2009164056 workType "article" @default.