scholarly journals Integrating Nephelometer Instrument Handbook

2016 ◽  
Author(s):  
J. Uin
Keyword(s):  
Integrating Nephelometer

The visual air quality predicted by conventional and scanning teleradiometers and an integrating nephelometer

1981 ◽  
Vol 15 (12) ◽  
pp. 2547-2554 ◽  
Author(s):  
William Malm ◽  
Ann Pitchford ◽  
Roger Tree ◽  
Eric Walther ◽  
Mike Pearson ◽  
...  
Keyword(s):  
Air Quality ◽  
Integrating Nephelometer

scholarly journals Irradiance Impact on Pollution by Integrating Nephelometer Measurements

Atmosphere ◽  
2015 ◽  
Vol 6 (12) ◽  
pp. 1889-1903 ◽  
Author(s):  
Maria Perrone ◽  
Pasquale Burlizzi ◽  
Salvatore Romano
Keyword(s):  
Integrating Nephelometer

scholarly journals Intercomparison Study of the CAPS PM<sub>ex</sub> (Cavity Attenuated Phase Shift Particle Light Extinction Monitor) with the combination of an Integrating Nephelometer and a Particle Soot Absorption Photometer

2012 ◽  
Vol 5 (5) ◽  
pp. 7587-7618
Author(s):  
A. Petzold ◽  
T. Onasch ◽  
P. Kebabian ◽  
A. Freedman
Keyword(s):  
Phase Shift ◽  
Black Carbon ◽  
Ammonium Sulfate ◽  
Regression Line ◽  
Accurate Determination ◽  
Mie Scattering ◽  
Polystyrene Latex ◽  
Light Extinction ◽  
Absorption Photometer ◽  
Integrating Nephelometer

Abstract. An evaluation of the Cavity Attenuated Phase Shift particle light extinction monitor (CAPS PMex) by means of a combination of a 3-wavelength Integrating Nephelometer (NEPH; TSI Model 3563) and a 3-wavelength filter-based Particle Soot Absorption Photometer (PSAP) was carried out using both laboratory generated test particles and ambient aerosols. An accurate determination of a fixed pathlength correction for the CAPS PMex was made by comparing extinction measurements using polystyrene latex (PSL) spheres in combination with Mie scattering calculations to account for the presence of PSL conglomerates. These studies yielded a linear instrument response over the investigated dynamical range from 20 to 450 M m−1 (10−6 m−1) with a linear correlation coefficient of R2 > 0.98. The adjustment factor was determined to be 1.05 times that previously reported. Correlating CAPS extinction to extinction measured by the NEPH-PSAP combination using laboratory-generated polydisperse mixtures of purely scattering ammonium sulfate and highly absorbing black carbon provided a linear regression line with slope m = 0.99 (R2 = 0.996) for single-scattering albedo values (λ = 630 nm) ranging from 0.35 (black carbon) to 1.00 (ammonium sulfate). For ambient aerosol, light extinction measured by CAPS PMex was highly correlated (R2 = 0.995) to extinction measured by the NEPH-PSAP combination with slope m = 0.95.

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