Nephelometer Sensitivities for the Determination of PM2.5 Mass Concentration in Ambient and Indoor Air
Abstract Simple algorithms are presented for the relationships between the gravimetrically measured PM2.5 mass concentration and a nephelometer particle scattering coefficient, for three different environments: two outdoor locations (an urban and a suburban) and one indoors. With these algorithms, t...
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| Format: | Article |
| Language: | English |
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Springer
2020-11-01
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| Series: | Aerosol and Air Quality Research |
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| Online Access: | https://doi.org/10.4209/aaqr.2020.04.0159 |
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| author | Dimitra Karali Glykeria Loupa Spyridon Rapsomanikis |
| author_facet | Dimitra Karali Glykeria Loupa Spyridon Rapsomanikis |
| author_sort | Dimitra Karali |
| collection | DOAJ |
| description | Abstract Simple algorithms are presented for the relationships between the gravimetrically measured PM2.5 mass concentration and a nephelometer particle scattering coefficient, for three different environments: two outdoor locations (an urban and a suburban) and one indoors. With these algorithms, the aerosol light scattering coefficients of the nephelometer (provided on line with a time step of seconds) can be related to PM2.5 mass concentrations. The effect of the relative humidity on the nephelometer readings was also evaluated with two models. In the last two campaigns (in the suburbs of the city and in a laboratory), a drying device before the aerosol entrance to the nephelometer was used, a Nafion™ dryer. In the indoor environment, the two methods (gravimetry and nephelometry) were compared with the readings of an aerosol light scattering spectrometer, which provided PM2.5 volume concentrations and thus it was possible to calculate the PM2.5 density indoors. |
| format | Article |
| id | doaj-art-7e02643ee33440429ea70e3b37c36de6 |
| institution | Kabale University |
| issn | 1680-8584 2071-1409 |
| language | English |
| publishDate | 2020-11-01 |
| publisher | Springer |
| record_format | Article |
| series | Aerosol and Air Quality Research |
| spelling | doaj-art-7e02643ee33440429ea70e3b37c36de62025-02-09T12:20:48ZengSpringerAerosol and Air Quality Research1680-85842071-14092020-11-012111810.4209/aaqr.2020.04.0159Nephelometer Sensitivities for the Determination of PM2.5 Mass Concentration in Ambient and Indoor AirDimitra Karali0Glykeria Loupa1Spyridon Rapsomanikis2Laboratory of Atmospheric Pollution and Pollution Control Engineering of Atmospheric Pollutants, Department of Environmental Engineering, Faculty of Engineering, Democritus University of ThraceLaboratory of Atmospheric Pollution and Pollution Control Engineering of Atmospheric Pollutants, Department of Environmental Engineering, Faculty of Engineering, Democritus University of ThraceLaboratory of Atmospheric Pollution and Pollution Control Engineering of Atmospheric Pollutants, Department of Environmental Engineering, Faculty of Engineering, Democritus University of ThraceAbstract Simple algorithms are presented for the relationships between the gravimetrically measured PM2.5 mass concentration and a nephelometer particle scattering coefficient, for three different environments: two outdoor locations (an urban and a suburban) and one indoors. With these algorithms, the aerosol light scattering coefficients of the nephelometer (provided on line with a time step of seconds) can be related to PM2.5 mass concentrations. The effect of the relative humidity on the nephelometer readings was also evaluated with two models. In the last two campaigns (in the suburbs of the city and in a laboratory), a drying device before the aerosol entrance to the nephelometer was used, a Nafion™ dryer. In the indoor environment, the two methods (gravimetry and nephelometry) were compared with the readings of an aerosol light scattering spectrometer, which provided PM2.5 volume concentrations and thus it was possible to calculate the PM2.5 density indoors.https://doi.org/10.4209/aaqr.2020.04.0159PM2.5 gravimetric mass concentrationsAerosol light scattering coefficientNephelometric measurementsIndoor aerosol density |
| spellingShingle | Dimitra Karali Glykeria Loupa Spyridon Rapsomanikis Nephelometer Sensitivities for the Determination of PM2.5 Mass Concentration in Ambient and Indoor Air Aerosol and Air Quality Research PM2.5 gravimetric mass concentrations Aerosol light scattering coefficient Nephelometric measurements Indoor aerosol density |
| title | Nephelometer Sensitivities for the Determination of PM2.5 Mass Concentration in Ambient and Indoor Air |
| title_full | Nephelometer Sensitivities for the Determination of PM2.5 Mass Concentration in Ambient and Indoor Air |
| title_fullStr | Nephelometer Sensitivities for the Determination of PM2.5 Mass Concentration in Ambient and Indoor Air |
| title_full_unstemmed | Nephelometer Sensitivities for the Determination of PM2.5 Mass Concentration in Ambient and Indoor Air |
| title_short | Nephelometer Sensitivities for the Determination of PM2.5 Mass Concentration in Ambient and Indoor Air |
| title_sort | nephelometer sensitivities for the determination of pm2 5 mass concentration in ambient and indoor air |
| topic | PM2.5 gravimetric mass concentrations Aerosol light scattering coefficient Nephelometric measurements Indoor aerosol density |
| url | https://doi.org/10.4209/aaqr.2020.04.0159 |
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