Matches in SemOpenAlex for { <https://semopenalex.org/work/W2000798680> ?p ?o ?g. }
Showing items 1 to 74 of
74
with 100 items per page.
- W2000798680 endingPage "823" @default.
- W2000798680 startingPage "817" @default.
- W2000798680 abstract "Two methods for measuring aerosol elemental carbon (EC) are compared. Three-hour integrated carbon samples were collected on quartz filters during the summer of 1990 in Uniontown, PA, primarily during episodes of elevated particulate pollution levels. These samples were analyzed for EC and organic carbon (OC) using a thermo/optical reflectance (TOR) method. Aerosol black carbon (BC) was measured using an Aethalometer, a semi-continuous optical absorption method. The optical attenuation factor for ambient BC was supplied by the instrument manufacturer. Three-hour average concentrations were calculated from the semi-continuous BC measurements to temporally match the EC/OC integrated quartz filter samples. BC and EC concentrations are highly correlated over the study period (R2=0.925). The regression equation is BC (μg m-3)=0.95 (±0.04) EC−0.2 (±0.4). The means of 3 h average measurements for EC and BC are 2.3 and 2.0 μg m-3, respectively, average concentrations of EC and BC ranged from 0.6 to 9.4 and 0.5 to 9.0 μg m-3 respectively. TOR OC and EC concentrations were not highly correlated (R2=0.22). The mean OC/EC ratio was 1.85. The 10-week Aethalometer hourly dataset was analyzed for daily and weekly temporal patterns. A strong diurnal BC pattern was observed, with peaks occurring between 7 a.m. and 9 a.m. local time. This is consistent with the increase in emissions from ground level combustion sources in the morning, coupled with poor dispersion before daytime vertical mixing is established. There was also some indication of a day-of-week effect on BC concentrations, attributed to activity of local ground level anthropogenic sources. Comparison of BC concentrations with co-located measurements of coefficient of haze in a separate field study in Philadelphia, PA, during the summer of 1992 showed good correlation between the two measurements (R2=0.82)." @default.
- W2000798680 created "2016-06-24" @default.
- W2000798680 creator A5001456321 @default.
- W2000798680 creator A5007088072 @default.
- W2000798680 creator A5013404265 @default.
- W2000798680 date "1999-02-01" @default.
- W2000798680 modified "2023-09-30" @default.
- W2000798680 title "Field validation of a semi-continuous method for aerosol black carbon (aethalometer) and temporal patterns of summertime hourly black carbon measurements in southwestern PA" @default.
- W2000798680 doi "https://doi.org/10.1016/s1352-2310(98)00142-3" @default.
- W2000798680 hasPublicationYear "1999" @default.
- W2000798680 type Work @default.
- W2000798680 sameAs 2000798680 @default.
- W2000798680 citedByCount "176" @default.
- W2000798680 countsByYear W20007986802012 @default.
- W2000798680 countsByYear W20007986802013 @default.
- W2000798680 countsByYear W20007986802014 @default.
- W2000798680 countsByYear W20007986802015 @default.
- W2000798680 countsByYear W20007986802016 @default.
- W2000798680 countsByYear W20007986802017 @default.
- W2000798680 countsByYear W20007986802018 @default.
- W2000798680 countsByYear W20007986802019 @default.
- W2000798680 countsByYear W20007986802020 @default.
- W2000798680 countsByYear W20007986802021 @default.
- W2000798680 countsByYear W20007986802022 @default.
- W2000798680 countsByYear W20007986802023 @default.
- W2000798680 crossrefType "journal-article" @default.
- W2000798680 hasAuthorship W2000798680A5001456321 @default.
- W2000798680 hasAuthorship W2000798680A5007088072 @default.
- W2000798680 hasAuthorship W2000798680A5013404265 @default.
- W2000798680 hasConcept C107872376 @default.
- W2000798680 hasConcept C127313418 @default.
- W2000798680 hasConcept C158787203 @default.
- W2000798680 hasConcept C176933379 @default.
- W2000798680 hasConcept C178790620 @default.
- W2000798680 hasConcept C185592680 @default.
- W2000798680 hasConcept C24245907 @default.
- W2000798680 hasConcept C2775931202 @default.
- W2000798680 hasConcept C2779345167 @default.
- W2000798680 hasConcept C39432304 @default.
- W2000798680 hasConcept C44038986 @default.
- W2000798680 hasConcept C91586092 @default.
- W2000798680 hasConceptScore W2000798680C107872376 @default.
- W2000798680 hasConceptScore W2000798680C127313418 @default.
- W2000798680 hasConceptScore W2000798680C158787203 @default.
- W2000798680 hasConceptScore W2000798680C176933379 @default.
- W2000798680 hasConceptScore W2000798680C178790620 @default.
- W2000798680 hasConceptScore W2000798680C185592680 @default.
- W2000798680 hasConceptScore W2000798680C24245907 @default.
- W2000798680 hasConceptScore W2000798680C2775931202 @default.
- W2000798680 hasConceptScore W2000798680C2779345167 @default.
- W2000798680 hasConceptScore W2000798680C39432304 @default.
- W2000798680 hasConceptScore W2000798680C44038986 @default.
- W2000798680 hasConceptScore W2000798680C91586092 @default.
- W2000798680 hasIssue "5" @default.
- W2000798680 hasLocation W20007986801 @default.
- W2000798680 hasOpenAccess W2000798680 @default.
- W2000798680 hasPrimaryLocation W20007986801 @default.
- W2000798680 hasRelatedWork W1966737540 @default.
- W2000798680 hasRelatedWork W2011464613 @default.
- W2000798680 hasRelatedWork W2167063643 @default.
- W2000798680 hasRelatedWork W2368342150 @default.
- W2000798680 hasRelatedWork W2888113573 @default.
- W2000798680 hasRelatedWork W2944829926 @default.
- W2000798680 hasRelatedWork W3005411052 @default.
- W2000798680 hasRelatedWork W3082347680 @default.
- W2000798680 hasRelatedWork W3092280668 @default.
- W2000798680 hasRelatedWork W4200183859 @default.
- W2000798680 hasVolume "33" @default.
- W2000798680 isParatext "false" @default.
- W2000798680 isRetracted "false" @default.
- W2000798680 magId "2000798680" @default.
- W2000798680 workType "article" @default.