The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners.
As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.
i
UV and infrared absorption spectra and 248 nm photolysis of maleic anhydride (C4H2O3)
-
2019
-
Source: Journal of Photochemistry and Photobiology A: Chemistry, 382, 111953
[PDF-765.40 KB]
Details:
-
Journal Title:Journal of Photochemistry and Photobiology A: Chemistry
-
Personal Author:
-
NOAA Program & Office:
-
Description:Maleic anhydride (C2H2(CO)2O, Furan-2,5-dione) is emitted into or formed in the atmosphere during bio-mass burning events as well as being a photochemical degradation product of some aromatic volatile organic compounds. The photochemical fate of maleic anhydride, however, is presently not well enough characterized to enable modeling of its impact on the environment and human health. Maleic anhydride is a strong UV absorbing molecule with a continuous spectrum that extends well into the long-wavelength atmospheric actinic region, >295 nm. In this study, the room temperature UV and infrared absorption spectra of maleic anhydride were measured and quantified using several complementary calibration methods. In addition, photolysis quantum yields and stable end-product yields were measured following its 248 nm pulsed laser photolysis. Photoproducts were measured at room temperature using Fourier transform infrared spectroscopy detection under slow flow conditions at total pressures in the range 100–600 Torr (Syn. Air). The maleic anhydride photolysis quantum yield was determined to be 0.85 ± 0.20, independent of pressure, with CO, CO2, and acetylene (C2H2) photo-products formed with a 1:1:1 stoichiometric ratio and a yield of 1 ± 0.15, independent of total pressure.
-
Source:Journal of Photochemistry and Photobiology A: Chemistry, 382, 111953
-
DOI:
-
ISSN:1010-6030
-
Format:
-
Publisher:
-
Document Type:
-
Rights Information:Accepted Manuscript
-
Rights Statement:The NOAA IR provides access to this content under the authority of the government's retained license to distribute publications and data resulting from federal funding. While users may legally access this content, the copyright owners retain rights that govern the reproduction, redistribution, and re-use of this work. The user is solely responsible for complying with applicable copyright law.
-
Compliance:Library
-
Main Document Checksum:
-
Download URL:
-
File Type:
