atmospheric aerosols
Molecular characterization of alkyl nitrates in atmospheric aerosols by ion mobility mass spectrometry
... In this study, we present the first demonstration of the ion mobility mass spectrometry (IMS-MS) interfaced with an electrospray ionization (ESI) source that enables the molecu- lar characterization of alkyl nitrates in ...
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Optical Characterization of Atmospheric Aerosols via Airborne Spectral Imaging and Self Organizing Map for Climate Change Diagnostics
... It has been demonstrated that the ÅE is a good indicator of fraction of small aerosol particles with radii r = 0.057 - 0.21 μm relative to large particles with ra- dii = 1.8 - 4 μm for atmospheric aerosols ...
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The Cd isotope composition of atmospheric aerosols from the Tropical Atlantic Ocean
... Variations in stable isotope composition have recently been employed to study the environmental cycling of Cd, particularly in the ocean. Cadmium is subject to internal cycling in the ocean, with removal through ...
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Spatial Temporal Characterization of Atmospheric Aerosols via Airborne Spectral Imaging and Growing Hierarchical Self Organizing Maps
... them atmospheric aerosols require effective fea- ture extraction methods such as self-organizing map (SOM) and the growing hierarchical self-organizing map ...monitor atmospheric processes and how ...
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Identification of secondary fatty alcohols in atmospheric aerosols in temperate forests
... different deciduous forest sites in Japan. Fatty diols, such as n-heptacosan-5,10-diol, were identified in atmospheric aerosols for the first time. Among the identified SFAs, n- nonacosan-10-ol was the most ...
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The Semi-Volatile Fraction of Atmospheric Aerosols
... Atmospheric aerosols are solid or liquid particulate matter made up of a mixture of organic and inorganic compounds and ...concern. Atmospheric aerosols can negatively influence climate as ...
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Analysis of functional groups in atmospheric aerosols by infrared spectroscopy: sparse methods for statistical selection of relevant absorption bands
... Abstract. Various vibrational modes present in molecular mixtures of laboratory and atmospheric aerosols give rise to complex Fourier transform infrared (FT-IR) absorption spec- tra. Such spectra can be ...
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An automated baseline correction protocol for infrared spectra of atmospheric aerosols collected on polytetrafluoroethylene (Teflon) filters
... 2005). Atmospheric aerosols, or particu- late matter (PM), occur as complex mixtures of inorganic salts, crustal elements, sea spray, organic compounds, black carbon, and water (Seinfeld and Pandis, 2006), ...
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Optical properties of atmospheric aerosols using filter-based absorption photometers
... origins. Atmospheric aerosols can be introduced into the atmosphere directly as particles called primary aerosol particles; they are not formed in the ...
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Determination of the Effects of Kelvin Radii and Bulk hygroscopicity on Atmospheric Aerosols Using MVN mix Ratios
... interactions. Atmospheric aerosols are suspended liquid or solid particles in the atmosphere originating from both natural and anthropogenic activities, affect local radiative forcing by scattering and ...
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Natural convection and entropy generation of ultrafine atmospheric aerosols in the presence of hydrodynamic partial slip and thermal radiation due to solar energy
... Figure 5 illustrates the variation in rates of the average Nusselt number and entropy generation due to adding minor volume fraction of nanoparticles and applying partial slip boundary conditions. Fig- ure 5(a) ...
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Theory of the Scattering Phase Matrix Determination for Atmospheric Aerosols
... A theoretical foundation is presented for the experimental determination of the scattering-phase matrix for spherical aerosols. In this paper we present a calculation of the angular distribution of light for the ...
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Analysis of functional groups in atmospheric aerosols by infrared spectroscopy: systematic intercomparison of calibration methods for US measurement network samples
... The essential principle of the technique is to record chemi- cally specific absorption bands resulting from dipole moment transitions induced by interaction of molecular vibrations with mid-IR radiation (Harris and ...
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Two-wavelength thermal–optical determination of light-absorbing carbon in atmospheric aerosols
... of atmospheric carbonaceous aerosol, despite a worldwide diffused effort, the situation is not satisfactory and a standardized and conclusive approach is still ...organic aerosols to be ...
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Assessment of Potential Toxic Fraction in Atmospheric Aerosols in Rural Environment Salve P.R., Wate S.R. and Krupadam R.J.*
... Concentration profile of PAHs: The fluorescence responsive PAHs found in PM10 are (Ace), (Flu), (Phen), (Pyr), (Chr), (Anth), (BaP) and (Flt).The concentration of total PAHs ranged between 2.67-17 ng m -3 during winter, ...
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Quantitative sampling and analysis of trace elements in atmospheric aerosols: impactor characterization and Synchrotron-XRF mass calibration
... Abstract. Identification of trace elements in ambient air can add substantial information to pollution source apportion- ment studies, although they do not contribute significantly to emissions in terms of mass. A method ...
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Retrieval algorithm for atmospheric aerosols based on multi angle viewing of ADEOS/POLDER
... of aerosols on a world-wide ...of aerosols is seen over the Gulf of Guinea throughout the ...These aerosols seem to be dust-originated particles from the Sahara ...
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An Overview of Hand held Sun Photometer Measurements of Atmospheric Aerosols
... data shows that the AOT for green light drops continuously from September to January and 154. then picks up in February[r] ...
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Significant Climate Impact of Highly Hygroscopic Atmospheric Aerosols in Delhi, India
... of aerosols in Delhi is much higher than the continental averages and another Asian megacity, ...of aerosols in Delhi on climate and hydrologic cycle, even if under same meteorologic conditions and same ...
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Seasonal Variability of Atmospheric Aerosols in Karachi, Pakistan
... meteorological parameters and emissions from industrial and indiscriminate solid waste burning and the most important source of black carbon emissions in Karachi was vehicular traffic. Aerosols in terms of Aerosol ...
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