Ionic Strength Effect Triggers Brown Carbon Formation through Heterogeneous Ozone Processing of Ortho-Vanillin

Abstract

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Formation of Organic Sulfur Compounds through SO<sub>2</sub> Initiated Photochemistry of PAHs and DMSO at the Air-Water Interface

“…This observation implies the formation of long-chain aliphatic-like CHOSs during the light-assisted oxidation of PHE/DMSO by SO2. In addition, a big fraction of compounds detected during the reaction of SO2 with PHE/DMSO exhibits Xc < 2.5, and is thus consistent with the formation of long-chain aliphatic-like CHOSs (Wang et al, 2021). The CHOS products located in the lower part of the VK diagrams have H/C ratios of 0.4-1.0, which are similar to those of the observed CHO products.…”

Particulate nitrate photolysis in the atmosphere

“…213,214 been recognized as a nitrating agent in brown carbon formation. 226 On the other hand, nitrate photolysis has the potential to accelerate the aging of brown carbon. 175 Nonetheless, studies on both the formation and aging of brown carbon during particulate nitrate photolysis are scarce.…”

Correction to “Ionic Strength Effect Triggers Brown Carbon Formation through Heterogeneous Ozone Processing of Ortho-Vanillin”

“…The combination of eqs 2 and 6 yields eq , as follows: This equation is replacing the Eq-7 in Wang et al The kinetic parameter F ij emerging from the fit with eq is −(0.018 ± 0.01) (Figure ).…”

“…However, Eq-9 expresses the liaison between the pseudo-first order rate constants and the ionic strength. Therefore, the combination of eqs 2 and 9 from Wang et al can give the right equation to fit the uptake coefficients: The kinetic salting coefficient b = −1.7 is obtained by the fit of the uptake coefficients by eq (Figure ).…”

“…The model (Eq ) predicts decrease of the uptake coefficients with increasing ionic strength. See Table S3 in Wang et al for HRT in eqs and . Corrected Figures and are provided here.…”