[PDF] Top 20 Interpretation of organic components from Positive Matrix Factorization of aerosol mass spectrometric data
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Interpretation of organic components from Positive Matrix Factorization of aerosol mass spectrometric data
... OA data from the Pittsburgh Supersite from ...hydrocarbon-like organic aerosol (HOA, a reduced OA) and oxygenated organic aerosol (OOA) and were strongly linked to primary ... See full document
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Analysis of secondary organic aerosol formation and aging using positive matrix factorization of high-resolution aerosol mass spectra: application to the dodecane low-NO<sub>x</sub> system
... The mass spectral profiles of the factors are presented in ...The mass percentage of each family to the total factor is presented in each factor’s ...tion of each ion in the spectrum to ... See full document
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Organic aerosol concentration and composition over Europe: insights from comparison of regional model predictions with aerosol mass spectrometer factor analysis
... fraction of the OA ...OA mass present in fine aerosol. The Aerosol Mass Spec- trometer (AMS) is used to measure the size-resolved mass concentration and total mass ... See full document
16
Organic aerosol components observed in Northern Hemispheric datasets from Aerosol Mass Spectrometry
... 90%) of submicron aerosols worldwide and a full under- standing of their sources, atmospheric processing, and prop- erties is important to assess their impacts on climate, human health, and visibility ... See full document
17
Identification and quantification of organic aerosol from cooking and other sources in Barcelona using aerosol mass spectrometer data
... AMS data have been combined with positive matrix factorization (PMF, Paatero and Tapper, 1994; Lanz et ...number of constant source profiles (factors) and their varying contributions ... See full document
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Identification and quantification of organic aerosol from cooking and other sources in Barcelona using aerosol mass spectrometer data
... 2 of the three primary- dominated components (BBOA, HOA, and COA), and as- suming that all the carbon in HOA is fossil and all the car- bon in BBOA and COA is non-fossil, we can estimate that 59 % of ... See full document
17
Sources of humic-like substances in the Pearl River Delta, China: positive matrix factorization analysis of PM<sub>2.5</sub> major components and source markers
... isolated from the bulk aerosol wa- ter extract using a SPE cartridge (Oasis HLB, 30 µm, 60 mg/cartridge, Waters, ...majority of inorganic ions, low molecular weight organic acids, and sugars ... See full document
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Aerosol analysis using a Proton-Transfer-Reaction Thermo-Desorption Mass Spectrometer (PTR-TD-MS): a new approach to study processing of organic aerosols
... However, chamber experiments typically only span a few hours. Gas-phase oxidation (by OH radicals) thus appears to be a part of the ambient aging process. Several other plausible mechanisms have been proposed, ... See full document
30
Selective measurements of isoprene and 2-methyl-3-buten-2-ol based on NO<sup>+</sup> ionization mass spectrometry
... Fig. 3. Normalized sensitivities plotted as a function of E N −1 . Isoprene (black) and 232 MBO (red) exhibit higher sensitivities at lower collisional energies. The dashed lines indicate a the- oretically ... See full document
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Luiz Barreto de Morais Neto1 , Maria Socorro de Souza Carneiro2 , Claudivan Feitosa de Lacerda3 , Marcus Roberto Góes Ferreira Costa1 , Rildson Melo Fontenele1 , José Valmir Feitosa4
... dry mass of total forage with increasing salinity in the irrigation water was influenced by the decline in the dry mass of green forage (Figure 2); the same was not observed for the dry ... See full document
7
Impact of aftertreatment devices on primary emissions and secondary organic aerosol formation potential from in-use diesel vehicles: results from smog chamber experiments
... source of aerosol in urban areas and has been linked to ad- verse health ...emitted from diesel cars can still lead to large amounts of secondary organic aerosol (SOA) in the ... See full document
19
Introducing the concept of Potential Aerosol Mass (PAM)
... amounts of oxidants are usually similar to those encountered in the atmosphere, with ozone being as much as several hundred ppbv and OH in the range of 10 6 –10 7 molecules cm −3 ... See full document
48
Volatility of secondary organic aerosol during OH radical induced ageing
... K) of 80 nm and 120 nm particles for α-pinene SOA produced in SAPHIR ...SOA mass with time before (green line) and after loss corrections with- out (green dashed line) and with ventilator on (green dotted ... See full document
37
Formation of hydroxyl radicals from photolysis of secondary organic aerosol material
... formation of small molecules in the gas phase (e.g. HCHO, HCOOH, CO), rapid loss of condensed phase carbonyls, and some degree of mass loss (Walser et ...rates of this chemistry are ... See full document
27
Exploring matrix factorization techniques for significant genes identification of Alzheimer’s disease microarray gene expression data
... [r] ... See full document
1
Factorization of matrix functions and the resolvents of certain operators
... explicit factorization problem for matrix functions has applications in different areas, such as the theory of singular integral operators, contour problems, the theory of non-linear ... See full document
11
Global distribution and climate forcing of marine organic aerosol – Part 1: Model improvements and evaluation
... summer and less productive winter periods) slightly better than V10, although neither simulation accurately predicts the range of concentrations observed during the differ- ent seasons. Neglecting any potential ... See full document
47
Multiday production of condensing organic aerosol mass in urban and forest outflow
... sitivity of photochemistry and gas–particle partitioning in a detailed box model to individual environmental variables is most clearly explored by keeping these parameters constant, varying only one at a ... See full document
21
Reactive oxygen species associated with water-soluble PM<sub>2.5</sub> in the southeastern United States: spatiotemporal trends and source apportionment
... rately in the same manner (15 mL of DI for 30 min of sonication time) for the metals (4 punches) and inorganic ions (1 punch) analysis. These extracts were then filtered using PTFE 0.45 µm pore syringe ... See full document
48
Seasonal and diel variation in the fish assemblage of a Neotropical delta in southern Brazil
... Ordination of the species (number of individuals) in relation to season (day/night) resulting from principal components analysis (PCA) applied to abundance (n) data matrix in the ... See full document
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