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We present a new instrument for monitoring aerosol composition, the economy time-offlight- aerosol chemical speciation monitor (ToF-ACSM), combining precision of stateof- the-art time-of-flight mass spectrometry with stability, reliability, and easy handling, which are necessities for long-term ...
In this manuscript,we present a new instrument based on AMS and ACSM technology, the time-of-,ight ACSM (ToF-ACSM).This instrument retains the advantages of the Q-ACSM such as compact design, semi-autonomous opera-tion, and relatively low cost,while greatly improving mass resolution and detec...
In this study, we characterized specific organic aerosols (OA) from vehicle, cooking, biomass burning, and coal burning emissions by a Time-of-Flight ACSM (TOF-ACSM) with the CV. Their corresponding marker ions that have been defined in the previous SV-based analysis are still valid in the...
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The non-refractory fine particulate matter PM1.0 and PM2.5 were measured by two co-located TOF-ACSM-CV-PM2.5 by placing them behind a PM2.5 and PM1.0 inlet, respectively. A comparison between the ACSMs and PM2.5 and PM1.0 filter samples showed a much better accu...
Based on the mass\nspectra measured by the ToF-ACSM, positive matrix factorization (PMF) with\nthe multilinear engine (ME-2) algorithm was performed to deconvolve OA into four\nfactors, including hydrocarbon-like OA (HOA, 12%), cooking OA (COA,\n18%), semi-volatile oxygenated OA (SVOOA...
Finally, application of a recently published parameterisation for the estimation of carbon oxidation state to ToF-ACSM spectra is validated for a range of organic standards and its use demonstrated for ambient urban data.doi:10.5194/amt-9-3263-2016...
To further understand the chemical drivers of this problem and to support the development of State Implementation Plan for PM, a time-of-flight aerosol chemical speciation monitor (ToF-ACSM) outfitted with a PM2.5lens and a capture vaporizer has been deployed at the Fresno-Garland air monitoring...