2018
DOI: 10.1039/c8em00308d
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Abstract: Acid-catalyzed multiphase chemistry of isoprene epoxydiols (IEPOX) on sulfate aerosol produces substantial amounts of water-soluble secondary organic aerosol (SOA) constituents, including 2-methyltetrols, methyltetrol sulfates, and oligomers thereof in atmospheric fine particulate matter (PM2.5). These constituents have commonly been measured by gas chromatography interfaced to electron ionization mass spectrometry (GC/EI-MS) with prior derivatization or by reverse-phase liquid chromatography interfaced to ele… Show more

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Cited by 74 publications
(178 citation statements)
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“…Silylation of polar compounds results in reduced polarity, enhanced volatility, and increased thermal stability, and they enable the GC-MS analysis of many compounds otherwise involatile or too unstable for these techniques. Therefore, appropriate caution should be taken, for example, with desulfation reactions associated with primary organosulfates (Takano et al, 1992;Kolender et al, 2004;Bedini et al, 2016Bedini et al, , 2017Cui et al, 2018), and corrections might be warranted when analyzing methyltetrols.…”
Section: Instrumentation and Analysis Methodsmentioning
confidence: 99%
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“…Silylation of polar compounds results in reduced polarity, enhanced volatility, and increased thermal stability, and they enable the GC-MS analysis of many compounds otherwise involatile or too unstable for these techniques. Therefore, appropriate caution should be taken, for example, with desulfation reactions associated with primary organosulfates (Takano et al, 1992;Kolender et al, 2004;Bedini et al, 2016Bedini et al, , 2017Cui et al, 2018), and corrections might be warranted when analyzing methyltetrols.…”
Section: Instrumentation and Analysis Methodsmentioning
confidence: 99%
“…The presence of 2-methyltetrols and 2methylglyceric acid and their sulfated analogues in isoprene SOA at a wide range of RH conditions suggests that SOA water content does not significantly affect their formation. Early chamber studies on isoprene ozonolysis by Jang et al (2002) and Czoschke et al (2003) showed enhanced SOA yields in the presence of acidified aerosol seeds. Recent laboratory results showed that the acidity of aerosol seeds plays a major role in the reactive uptake of isoprene oxidation products by particle phases (Paulot et al, 2009;Surratt et al, 2010;Lin et al, 2012;Gaston et al, 2014a, b;Riedel et al, 2015).…”
Section: Effect Of Relative Humidity and Acidity On Product Formationmentioning
confidence: 99%
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“…Due to the lack of authentic standards, surrogate standards were used to quantify BSOA tracers except PNA. Specifically, erythritol, PNA, and octadecanoic acid were used for the quantification of SOA I tracers (Ding et al, 2008), other SOA M tracers , and CA , respectively. The method detection limits (MDLs) for erythritol, PNA, and octadecanoic acid were 0.01, 0.02, and 0.02 ng m −3 , respectively.…”
Section: Chemical Analysismentioning
confidence: 99%
“…Nonetheless, more recent studies have shown that, in particular, the application of new developments in separation techniques, such as hydrophilic interaction LC (also referred to as HILIC), can substantially increase the number of detectable isoprene OS and facilitate their identification and quantification (Cui et al 2018;Hettiyadura et al 2015Hettiyadura et al , 2017Hettiyadura et al , 2019.…”
Section: Introductionmentioning
confidence: 99%