Matches in SemOpenAlex for { <https://semopenalex.org/work/W2019194508> ?p ?o ?g. }
Showing items 1 to 80 of
80
with 100 items per page.
- W2019194508 endingPage "2342" @default.
- W2019194508 startingPage "2337" @default.
- W2019194508 abstract "Capillary electrochromatography (CEC) was introduced to the separation of nine important urea herbicides using octadecyl-silica (ODS) capillary columns that were specially designed to allow the realization of a relatively strong electroosmotic flow (EOF) and, in turn, fast separations. The ODS stationary phase was intentionally prepared to have a low surface coverage in octadecyl ligands in order to ensure a strong EOF. This ODS stationary phase of low surface coverage exhibited the usual reversed-phase chromatographic behavior as was manifested by the linearity of plots of log kappa versus the percent organic modifier in the mobile phase. The nature of the organic modifier of the mobile phase influenced the order of elution as well as the separation efficiency of the nine urea herbicides. Mobile phases containing acetonitrile yielded higher separation efficiency (by a factor of 1.5) than methanol-containing mobile phases. This was attributed to the higher mass transfer resistances of the solute in and out of the pores in the presence of the more viscous methanol-containing mobile phases. Due to the relatively strong affinity of the urea herbicides to the ODS stationary phase, on-line preconcentration consisting of prolonged injections allowed the determination of 10(-5) M urea herbicide samples using a UV detector without sacrificing separation efficiency. This was further decreased to 10(-7) M when the prolonged injection was preceded by the injection of a plug of water. The plug of water (the more retentive mobile phase) brought about an enhanced accumulation of the dilute samples into a narrow band at the inlet of the CEC column. When this on-column sample enrichment approach was combined with an off-line sample preconcentration step, which consisted of a solid-phase extraction process, ultra dilute samples of 10(-10) M (0.1 ppb) could be detected." @default.
- W2019194508 created "2016-06-24" @default.
- W2019194508 creator A5000436408 @default.
- W2019194508 creator A5036104491 @default.
- W2019194508 date "1999-08-01" @default.
- W2019194508 modified "2023-10-16" @default.
- W2019194508 title "Electrically driven microseparation methods for pesticides and metabolites. II: On-line and off-line preconcentration of urea herbicides in capillary electrochromatography" @default.
- W2019194508 cites W1975307292 @default.
- W2019194508 cites W2038083583 @default.
- W2019194508 cites W2046782524 @default.
- W2019194508 cites W2051279604 @default.
- W2019194508 cites W2077342890 @default.
- W2019194508 cites W2083247033 @default.
- W2019194508 cites W2093262903 @default.
- W2019194508 cites W4205530588 @default.
- W2019194508 cites W4243922395 @default.
- W2019194508 doi "https://doi.org/10.1002/(sici)1522-2683(19990801)20:12<2337::aid-elps2337>3.0.co;2-o" @default.
- W2019194508 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/10499323" @default.
- W2019194508 hasPublicationYear "1999" @default.
- W2019194508 type Work @default.
- W2019194508 sameAs 2019194508 @default.
- W2019194508 citedByCount "30" @default.
- W2019194508 countsByYear W20191945082012 @default.
- W2019194508 countsByYear W20191945082013 @default.
- W2019194508 countsByYear W20191945082016 @default.
- W2019194508 crossrefType "journal-article" @default.
- W2019194508 hasAuthorship W2019194508A5000436408 @default.
- W2019194508 hasAuthorship W2019194508A5036104491 @default.
- W2019194508 hasConcept C113196181 @default.
- W2019194508 hasConcept C114259620 @default.
- W2019194508 hasConcept C159985019 @default.
- W2019194508 hasConcept C178790620 @default.
- W2019194508 hasConcept C185592680 @default.
- W2019194508 hasConcept C192562407 @default.
- W2019194508 hasConcept C196806460 @default.
- W2019194508 hasConcept C2777463227 @default.
- W2019194508 hasConcept C2779607525 @default.
- W2019194508 hasConcept C2780365088 @default.
- W2019194508 hasConcept C2900643 @default.
- W2019194508 hasConcept C34644351 @default.
- W2019194508 hasConcept C43617362 @default.
- W2019194508 hasConcept C44280652 @default.
- W2019194508 hasConcept C73826308 @default.
- W2019194508 hasConceptScore W2019194508C113196181 @default.
- W2019194508 hasConceptScore W2019194508C114259620 @default.
- W2019194508 hasConceptScore W2019194508C159985019 @default.
- W2019194508 hasConceptScore W2019194508C178790620 @default.
- W2019194508 hasConceptScore W2019194508C185592680 @default.
- W2019194508 hasConceptScore W2019194508C192562407 @default.
- W2019194508 hasConceptScore W2019194508C196806460 @default.
- W2019194508 hasConceptScore W2019194508C2777463227 @default.
- W2019194508 hasConceptScore W2019194508C2779607525 @default.
- W2019194508 hasConceptScore W2019194508C2780365088 @default.
- W2019194508 hasConceptScore W2019194508C2900643 @default.
- W2019194508 hasConceptScore W2019194508C34644351 @default.
- W2019194508 hasConceptScore W2019194508C43617362 @default.
- W2019194508 hasConceptScore W2019194508C44280652 @default.
- W2019194508 hasConceptScore W2019194508C73826308 @default.
- W2019194508 hasIssue "12" @default.
- W2019194508 hasLocation W20191945081 @default.
- W2019194508 hasLocation W20191945082 @default.
- W2019194508 hasOpenAccess W2019194508 @default.
- W2019194508 hasPrimaryLocation W20191945081 @default.
- W2019194508 hasRelatedWork W1984455289 @default.
- W2019194508 hasRelatedWork W1997662171 @default.
- W2019194508 hasRelatedWork W2018901036 @default.
- W2019194508 hasRelatedWork W2022433216 @default.
- W2019194508 hasRelatedWork W2041853097 @default.
- W2019194508 hasRelatedWork W2044824815 @default.
- W2019194508 hasRelatedWork W2415686199 @default.
- W2019194508 hasRelatedWork W2517712438 @default.
- W2019194508 hasRelatedWork W2799656108 @default.
- W2019194508 hasRelatedWork W82969013 @default.
- W2019194508 hasVolume "20" @default.
- W2019194508 isParatext "false" @default.
- W2019194508 isRetracted "false" @default.
- W2019194508 magId "2019194508" @default.
- W2019194508 workType "article" @default.