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Light-absorbing secondary organic material formed by glyoxal in aqueous aerosol mimics
Open accessAbstract
Abstract. Light-absorbing and high-molecular-weight secondary organic products were observed to result from the reaction of glyoxal in mildly acidic (pH=4) aqueous inorganic salt solutions mimicking aqueous tropospheric aerosol particles. High-molecular-weight (500–600 amu) products were observed when ammonium sulfate ((NH4)2SO4) or sodium chloride (NaCl) was present in the aqueous phase. The products formed in (NH4)2SO4 or ammonium nitrate (NH4NO3) solutions absorb light at UV and visible wavelengths. Substantial absorption at 300–400 nm develops within two hours, and absorption between 400–600 nm develops within days. Pendant drop tensiometry measurements show that the products are not surface-active. The experimental results along with ab initio predictions of the UV/Vis absorption of potential products suggest a mechanism involving the participation of the ammonium ion. If similar products are formed in atmospheric aerosol particles, they could change the optical properties of the seed aerosol over its lifetime.
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A Computational Approach to Edge Detection
Canny, J. (1986) · IEEE Transactions on Pattern Analysis and Machine Intelligence · doi:10.1109/tpami.1986.4767851 · Cited by 30,004
Cited by
Photochemical processing of aqueous atmospheric brown carbon
Zhao, R., Lee, A. K. Y., Huang, L., Li, X., Yang, F., & Abbatt, J. P. D. (2015) · Atmospheric Chemistry and Physics · doi:10.5194/acp-15-6087-2015 · Cited by 373
Lee, H. J. (., Aiona, P. K., Laskin, A., Laskin, J., & Nizkorodov, S. A. (2014) · Environmental Science & Technology · doi:10.1021/es502515r · Cited by 359
Bones, D. L., Henricksen, D. K., Mang, S. A., Gonsior, M., Bateman, A. P., Nguyen, T. B., Cooper, W. J., & Nizkorodov, S. A. (2010) · Journal of Geophysical Research: Atmospheres · doi:10.1029/2009jd012864 · Cited by 299
Lee, H. J. (., Laskin, A., Laskin, J., & Nizkorodov, S. A. (2013) · Environmental Science & Technology · doi:10.1021/es400644c · Cited by 164
Metadata
- Authors
- Shapiro, E. L., Szprengiel, J., Sareen, N., Jen, C. N., Giordano, M. R., & McNeill, V. F.
- Venue
- Atmospheric Chemistry and Physics
- Publisher
- Copernicus GmbH
- Published
- 2009-04-01
- Volume
- 9
- Issue
- 7
- Pages
- 2289-2300
- ISSN
- 1680-7316 (ISSN-L)
- 1680-7324
- OpenAlex
- W2096665312
- Cited by
- 319
- References
- 1
- FWCI
- 15.24
- Type
- journal article
- Language
- en
- Open access
- gold
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- Shapiro, E. L., Szprengiel, J., Sareen, N., Jen, C. N., Giordano, M. R., & McNeill, V. F. (2009). Light-absorbing secondary organic material formed by glyoxal in aqueous aerosol mimics. Atmospheric Chemistry and Physics. https://doi.org/10.5194/acp-9-2289-2009
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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