scholarly journals Cooking and electronic cigarettes leading to large differences between indoor and outdoor particle composition and concentration measured by aerosol mass spectrometry

2020 ◽  
Vol 22 (6) ◽  
pp. 1382-1396
Author(s):  
Yuliya Omelekhina ◽  
Axel Eriksson ◽  
Francesco Canonaco ◽  
Andre S. H. Prevot ◽  
Patrik Nilsson ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Chemical Composition ◽  
State Of The Art ◽  
Electronic Cigarettes ◽  
The State ◽  
Particle Composition ◽  
Aerosol Mass ◽  
Aerosol Mass Spectrometry ◽  
Indoor And Outdoor ◽  
Aerosol Chemical Composition

This study assesses aerosol chemical composition PM1 (<1 μm) with the state-of-the-art techniques inside and outside of an occupied residence.

Aerosol Chemical Composition in Cloud Events by High Resolution Time-of-Flight Aerosol Mass Spectrometry

2013 ◽  
Vol 47 (6) ◽  
pp. 2645-2653 ◽  
Author(s):  
Liqing Hao ◽  
Sami Romakkaniemi ◽  
Aki Kortelainen ◽  
Antti Jaatinen ◽  
Harri Portin ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Chemical Composition ◽  
High Resolution ◽  
Time Of Flight ◽  
Resolution Time ◽  
Aerosol Mass ◽  
Aerosol Mass Spectrometry ◽  
Aerosol Chemical Composition

scholarly journals Characterization of aerosol chemical composition with aerosol mass spectrometry in Central Europe: an overview

2010 ◽  
Vol 10 (21) ◽  
pp. 10453-10471 ◽  
Author(s):  
V. A. Lanz ◽  
A. S. H. Prévôt ◽  
M. R. Alfarra ◽  
S. Weimer ◽  
C. Mohr ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Chemical Composition ◽  
Organic Aerosol ◽  
Volatile Fraction ◽  
Aerosol Composition ◽  
Aerosol Mass ◽  
Aerosol Mass Spectrometry ◽  
Field Campaigns ◽  
Alpine Valleys ◽  
Aerosol Chemical Composition

Abstract. Real-time measurements of non-refractory submicron aerosols (NR-PM1) were conducted within the greater Alpine region (Switzerland, Germany, Austria, France and Liechtenstein) during several week-long field campaigns in 2002–2009. This region represents one of the most important economic and recreational spaces in Europe. A large variety of sites was covered including urban backgrounds, motorways, rural, remote, and high-alpine stations, and also mobile on-road measurements were performed. Inorganic and organic aerosol (OA) fractions were determined by means of aerosol mass spectrometry (AMS). The data originating from 13 different field campaigns and the combined data have been utilized for providing an improved temporal and spatial data coverage. The average mass concentration of NR-PM1 for the different campaigns typically ranged between 10 and 30 μg m−3. Overall, the organic portion was most abundant, ranging from 36% to 81% of NR-PM1. Other main constituents comprised ammonium (5–15%), nitrate (8–36%), sulfate (3–26%), and chloride (0–5%). These latter anions were, on average, fully neutralized by ammonium. As a major result, time of the year (winter vs. summer) and location of the site (Alpine valleys vs. Plateau) could largely explain the variability in aerosol chemical composition for the different campaigns and were found to be better descriptors for aerosol composition than the type of site (urban, rural etc.). Thus, a reassessment of classifications of measurements sites might be considered in the future, possibly also for other regions of the world. The OA data was further analyzed using positive matrix factorization (PMF) and the multi-linear engine ME (factor analysis) separating the total OA into its underlying components, such as oxygenated (mostly secondary) organic aerosol (OOA), hydrocarbon-like and freshly emitted organic aerosol (HOA), as well as OA from biomass burning (BBOA). OOA was ubiquitous, ranged between 36% and 94% of OA, and could be separated into a low-volatility and a semi-volatile fraction (LV-OOA and SV-OOA) for all summer campaigns at low altitude sites. Wood combustion (BBOA) accounted for a considerable fraction during wintertime (17–49% OA), particularly in narrow Alpine valleys BBOA was often the most abundant OA component. HOA/OA ratios were comparatively low for all campaigns (6–16%) with the exception of on-road, mobile measurements (23%) in the Rhine Valley. The abundance of the aerosol components and the retrievability of SV-OOA and LV-OOA are discussed in the light of atmospheric chemistry and physics.

scholarly journals Fragment ion-functional group relationships in organic aerosols using aerosol mass spectrometry and mid-infrared spectroscopy

2021 ◽  
Author(s):  
Amir Yazdani ◽  
Nikunj Dudani ◽  
Satoshi Takahama ◽  
Amelie Bertrand ◽  
André S. H. Prévôt ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Infrared Spectroscopy ◽  
Chemical Composition ◽  
Temporal Resolution ◽  
Functional Group ◽  
High Temporal Resolution ◽  
Mid Infrared ◽  
Mid Infrared Spectroscopy ◽  
Aerosol Mass ◽  
Aerosol Mass Spectrometry

Abstract. Aerosol mass spectrometry (AMS) and mid-infrared spectroscopy (MIR) are two analytical methods for characterizing the chemical composition of OM. While AMS provides high-temporal-resolution bulk measurements, the extensive fragmentation during the electron impact (EI) ionization makes the characterization of OM components limited. The analysis of aerosols collected on PTFE filters using MIR, on the other hand, provides functional group (FG) information with reduced sample alteration but results in a relatively low temporal resolution. In this work, we compared and combined MIR and AMS measurements for several environmental chamber experiments to achieve a better understanding of the AMS spectra and the OM chemical evolution by aging. Fresh emissions of wood and coal burning were injected into an environmental simulation chamber and aged with hydroxyl and nitrate radicals. A high-resolution time-of-flight (HR-TOF) AMS measured the bulk chemical composition of fine PM. Fine aerosols were also sampled on PTFE filters before and after aging for the offline MIR analysis. After comparing AMS and MIR bulk measurements, we used multivariate statistics to identify the influential functional groups contributing to AMS OM mass for different aerosol sources and aging processes. We also identified the key mass fragments resulting from each functional group for the complex OM generated from biomass and fossil fuel combustion. Finally, we developed a statistical model that enables estimation of the high-time-resolution functional group composition of OM using collocated AMS and MIR measurements. Using this approach, AMS spectra can be used to interpolate the functional group measurements by MIR, allowing us to better understand the evolution of OM during the aging process.

Laser ablation single particle aerosol mass spectrometry for the direct analysis of raw coal samples

2018 ◽  
Vol 33 (7) ◽  
pp. 1158-1167 ◽  
Author(s):  
Hui Zhu ◽  
Mei Liu ◽  
Teng Guo ◽  
Li Xu ◽  
Junguo Dong ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Laser Ablation ◽  
Chemical Composition ◽  
Single Particle ◽  
Direct Analysis ◽  
Online Measurement ◽  
Solid Materials ◽  
Aerosol Mass ◽  
Aerosol Mass Spectrometry ◽  
Individual Particles

LA-SPAMS was developed for online measurement of the size and chemical composition of individual particles ablated from solid materials.

scholarly journals Influence of Airborne Particles’ Chemical Composition on SVOC Uptake from PVC Flooring—Time-Resolved Analysis with Aerosol Mass Spectrometry

2019 ◽  
Vol 54 (1) ◽  
pp. 85-91 ◽  
Author(s):  
Axel C. Eriksson ◽  
Christina Andersen ◽  
Annette M. Krais ◽  
Jacob Klenø Nøjgaard ◽  
Per-Axel Clausen ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Chemical Composition ◽  
Airborne Particles ◽  
Time Resolved ◽  
Aerosol Mass ◽  
Aerosol Mass Spectrometry
Sign in / Sign up

Export Citation Format

Share Document