Kinetics of the formation of hydroxyacetaldehyde-sulfur(IV) adducts at low pH

Olson, Terese M.; Torry, Lori A.; Hoffmann, Michael R.

doi:10.1021/es00176a006

Cited by 9 publications

(7 citation statements)

References 20 publications

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“…It also has been shown that aldehyde-S(IV) species, such as glyoxal-S(IV), hydroxyacetaldehyde-S(IV), and the methylglyoxal adduct, are formed in cloud water and have faster formation rates than HMS at pH ≥4.5 (31). Although the solubility of these aldehydes is comparable to that of HCHO, their concentrations in the atmosphere are much lower (SI Appendix, Supplementary Discussion 1) (30,34,(44)(45)(46)(47)(48)(49). Nonetheless, studies are clearly needed to quantify their contribution and that of other multifunctional hydroperoxides, as only HMHP, an α-hydroxyhydroperoxide, and ISOPOOH, a β-hydroxyhydroperoxide, have been investigated, to our knowledge.…”

Section: Resultsmentioning

confidence: 99%

Catalytic role of formaldehyde in particulate matter formation

Dovrou

Bates

Moch

et al. 2022

Proc. Natl. Acad. Sci. U.S.A.

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Formaldehyde (HCHO), the simplest and most abundant carbonyl in the atmosphere, contributes to particulate matter (PM) formation via two in-cloud processing pathways. First, in a catalytic pathway, HCHO reacts with hydrogen peroxide (H2O2) to form hydroxymethyl hydroperoxide (HMHP), which rapidly oxidizes dissolved sulfur dioxide (SO2,aq) to sulfate, regenerating HCHO. Second, HCHO reacts with dissolved SO2,aq to form hydroxymethanesulfonate (HMS), which upon oxidation with the hydroxyl radical (OH) forms sulfate and also reforms HCHO. Chemical transport model simulations using rate coefficients from laboratory studies of the reaction rate of HMHP with SO2,aq show that the HMHP pathways reduce the SO2 lifetime by up to a factor of 2 and contribute up to ∼18% of global sulfate. This contribution rises to >50% in isoprene-dominated regions such as the Amazon. Combined with recent results on HMS, this work demonstrates that the one-carbon molecules HMHP and HCHO contribute significantly to global PM, with HCHO playing a crucial catalytic role.

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Section: Resultsmentioning

confidence: 99%

Catalytic role of formaldehyde in particulate matter formation

Dovrou

Bates

Moch

et al. 2022

Proc. Natl. Acad. Sci. U.S.A.

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“…Tables 3 and 4 show that the pb i values characterizing complexation processes (4), (5), and (7)3(10) are negative, suggesting spontaneous occurrence of these reactions.…”

Section: Comparison Ofmentioning

confidence: 99%

“…Sulfite compounds react with carbonyl derivatives. The reactions of sulfurous compounds with ketones and aldehydes in aqueous solutions were studied in [4,5].…”

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confidence: 99%

Interaction of Sulfur Dioxide with Aqueous Solutions of Amides

2005

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The interactions in the systems H 2 O3Am3SO 2 (Am is formamide, dimethylformamide, acetamide, urea, tetramethylurea, tert-butylurea) at 278 and 293 K were studied pH-metrically. The results suggest formation of intermolecular and ion3molecule associates. The composition and stability of the compounds formed strongly depend on the structure and concentration of the solution components and on temperature.The possible reactions of SO 2 with compounds of various classes are very diverse, and studies of the behavior of SO 2 in aqueous solutions are of not only theoretical but also practical importance [1].

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“…The adduct thus formed, R-hydroxyethanesulfonic acid, consists of a strong acid species involved in the equilibrium. On the basis of the typical acid strengths of other sulfonic acids, the first acid dissociation constant of R-hydroxyethanesulfonic acid is expected to be >0.1 and the second acid dissociation constant has also been determined as 5.0 × 10 -11 (19).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Formation and Stability of Hydroxyalkylsulfonic Acids in Wines

Azevedo

Reis²,

Motta³

et al. 2007

J. Agric. Food Chem.

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The presence of carbonyl compounds (CCs) in wines has sparked the interest of researchers in several countries. The quantification of some of these compounds has been used as a parameter of quality for many fermented beverages. Although present in minute quantities (except for acetaldehyde), they have a strong olfactory impact. In addition, the CCs found in wines have a strong affinity for bisulfite and can form stable adducts, which will also interfere in the characteristics of aroma. The greatest challenge, however, is to predict which CCs have the strongest affinity for S(IV) and what conditions favor this interaction. To better understand the reaction of CC-bisulfite adduct formation (HASA), this study has evaluated the profile of 22 CCs in a "synthetic wine" containing bisulfite and in 10 real samples of different wines from the São Francisco Valley, northeastern Brazil. On the basis of principal component analysis (PCA) and dissociation constants, the results revealed that aliphatic aldehydes form adducts with S(IV), whereas ketones, cyclic aldehydes, and trans-alkenes interact weakly and are found predominantly in their free form. These results revealed also that pH 10 and 11 were defined as the most appropriate for CC-SO 2 adduct dissociation, and the total CCs were quantified reliably.

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Kinetics of the formation of hydroxyacetaldehyde-sulfur(IV) adducts at low pH

Cited by 9 publications

References 20 publications

Catalytic role of formaldehyde in particulate matter formation

Catalytic role of formaldehyde in particulate matter formation

Interaction of Sulfur Dioxide with Aqueous Solutions of Amides

Evaluation of the Formation and Stability of Hydroxyalkylsulfonic Acids in Wines

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