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Nilsson EJK, Heimdal J, Bache-Andreassen L, Johnson MS, Nielsen CJ. Tropospheric photolysis rates of the acetaldehyde isotopologues CD₃CHO and CD₃CDO relative to CH₃CHO measured at the European Photoreactor Facility. J Phys Chem A 2015; 119:2562-7. [PMID: 25654214 DOI: 10.1021/jp509050d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Acetaldehyde is a hazardous pollutant found in indoor and ambient air. Acetaldehyde photolysis is pressure- and wavelength-dependent with three distinct product channels. In this study, the photolysis rates of CH3CHO, CD3CDO, and CD3CHO are studied in natural tropospheric conditions using long path FTIR spectroscopy, at the European Photoreactor Facility (EUPHORE) in Valencia, Spain. The average relative photolysis rate as an average of four experiments for the fully deuterated isotopologue is j(CH3CHO)/j(CD3CDO) = 1.75 ± 0.04, and as a result of a single experiment j(CH3CHO)/j(CD3CHO) = 1.10 ± 0.10. These results, combined with our previous determination of j(CH3CHO)/j(CH3CDO) = 1.26 ± 0.03, provide mechanistic insight into the photodissociation dynamics of the photoexcited species. Despite the extensive isotopic scrambling in photoexcited acetaldehyde that has recently been reported, the position of the substitution has a clear effect on the relative photolysis rates.
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Affiliation(s)
- Elna J K Nilsson
- †Division of Combustion Physics, Department of Physics, Lund University, Professorsgatan 1, SE-22363 Lund, Sweden
| | - Jimmy Heimdal
- ‡Copenhagen Center for Atmospheric Research, Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen OE, Denmark
| | - Lihn Bache-Andreassen
- §Centre for Theoretical and Computational Chemistry, Department of Chemistry, University of Oslo, Pb. 1033 - Blindern, 0315 Oslo, Norway
| | - Matthew S Johnson
- ‡Copenhagen Center for Atmospheric Research, Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen OE, Denmark
| | - Claus J Nielsen
- §Centre for Theoretical and Computational Chemistry, Department of Chemistry, University of Oslo, Pb. 1033 - Blindern, 0315 Oslo, Norway
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Hu H, Dibble TS, Tyndall GS, Orlando JJ. Temperature-Dependent Branching Ratios of Deuterated Methoxy Radicals (CH2DO•) Reacting With O2. J Phys Chem A 2012; 116:6295-302. [DOI: 10.1021/jp211873w] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Hongyi Hu
- Chemistry Department, College of Environmental Science
and Forestry, State University of New York, Syracuse, New York 13210, United States
| | - Theodore S. Dibble
- Chemistry Department, College of Environmental Science
and Forestry, State University of New York, Syracuse, New York 13210, United States
| | - Geoffrey S. Tyndall
- Atmospheric Chemistry Division, National Center for Atmospheric Research, Boulder, Colorado 80305,
United States
| | - John J. Orlando
- Atmospheric Chemistry Division, National Center for Atmospheric Research, Boulder, Colorado 80305,
United States
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Rice AL, Quay P. Isotopic composition of formaldehyde in urban air. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2009; 43:8752-8758. [PMID: 19943642 DOI: 10.1021/es9010916] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The isotopic composition of atmospheric formaldehyde was measured in air samples collected in urban Seattle, Washington. A recently developed gas chromatography-isotope ratio mass spectrometry analytical technique was used to extract formaldehyde directly from whole air, separate it from other volatile organic compounds, and measure its (13)C/(12)C and D/H ratio. Measurements of formaldehyde concentration were also made concomitant with isotope ratio. Results of the analysis of nine discrete air samples for delta(13)C-HCHO have a relatively small range in isotopic composition (-31 to -25 per thousand versus VPDB [+/-1.3 per thousand]) over a considerable concentration range (0.8-4.4 ppb [+/-15%]). In contrast, analyses of 17 air samples for deltaD-HCHO show a large range (-296 to +210 per thousand versus VSMOW [+/-50 per thousand]) over the concentrations measured (0.5-2.9 ppb). Observations of deltaD are weakly anticorrelated with concentration. Isotopic data are interpreted using both source- and sink-based approaches. Results of delta(13)C-HCHO are similar to those observed previously for a number of nonmethane hydrocarbons in urban environments and variability can be reconciled with a simple sink-based model. The large variability observed in deltaD-HCHO favors a source-based interpretation with HCHO depleted in deuterium from primary sources of HCHO (i.e., combustion) and HCHO enriched in deuterium from secondary photochemical sources (i.e., hydrocarbon oxidation).
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Affiliation(s)
- Andrew L Rice
- Department of Physics, Portland State University, Portland, Oregon 97207, USA.
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Feilberg KL, Gruber-Stadler M, Johnson MS, Mühlhäuser M, Nielsen CJ. 13C, 18O, and D Fractionation Effects in the Reactions of CH3OH Isotopologues with Cl and OH Radicals. J Phys Chem A 2008; 112:11099-114. [DOI: 10.1021/jp805643x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Karen L. Feilberg
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen OE, Denmark, Centre for Theoretical and Computational Chemistry, Department of Chemistry, University of Oslo, Pb. 1033 - Blindern, N-0315 Oslo, Norway, and Studiengang Umwelt-, Verfahrens- & Biotechnik, MCI - Management Center Innsbruck Internationale Fachhochschulgesellschaft mbH, Egger-Lienz-Straβe 120, A-6020 Innsbruck, Austria
| | - Margret Gruber-Stadler
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen OE, Denmark, Centre for Theoretical and Computational Chemistry, Department of Chemistry, University of Oslo, Pb. 1033 - Blindern, N-0315 Oslo, Norway, and Studiengang Umwelt-, Verfahrens- & Biotechnik, MCI - Management Center Innsbruck Internationale Fachhochschulgesellschaft mbH, Egger-Lienz-Straβe 120, A-6020 Innsbruck, Austria
| | - Matthew S. Johnson
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen OE, Denmark, Centre for Theoretical and Computational Chemistry, Department of Chemistry, University of Oslo, Pb. 1033 - Blindern, N-0315 Oslo, Norway, and Studiengang Umwelt-, Verfahrens- & Biotechnik, MCI - Management Center Innsbruck Internationale Fachhochschulgesellschaft mbH, Egger-Lienz-Straβe 120, A-6020 Innsbruck, Austria
| | - Max Mühlhäuser
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen OE, Denmark, Centre for Theoretical and Computational Chemistry, Department of Chemistry, University of Oslo, Pb. 1033 - Blindern, N-0315 Oslo, Norway, and Studiengang Umwelt-, Verfahrens- & Biotechnik, MCI - Management Center Innsbruck Internationale Fachhochschulgesellschaft mbH, Egger-Lienz-Straβe 120, A-6020 Innsbruck, Austria
| | - Claus J. Nielsen
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen OE, Denmark, Centre for Theoretical and Computational Chemistry, Department of Chemistry, University of Oslo, Pb. 1033 - Blindern, N-0315 Oslo, Norway, and Studiengang Umwelt-, Verfahrens- & Biotechnik, MCI - Management Center Innsbruck Internationale Fachhochschulgesellschaft mbH, Egger-Lienz-Straβe 120, A-6020 Innsbruck, Austria
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Gratien A, Nilsson E, Doussin JF, Johnson MS, Nielsen CJ, Stenstrøm Y, Picquet-Varrault B. UV and IR Absorption Cross-sections of HCHO, HCDO, and DCDO. J Phys Chem A 2007; 111:11506-13. [DOI: 10.1021/jp074288r] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Aline Gratien
- Laboratoire Interuniversitaire des Systèmes Atmosphériques, UMR 7583, University of Paris 7 and Paris 12, Créteil, France, Copenhagen Center for Atmospheric Research, Department of Chemistry, University of Copenhagen, Universitetsparken 5 DK-2100 Copenhagen OE, Denmark, Centre for Theoretical and Computational Chemistry, Department of Chemistry, University of Oslo, Pb. 1033 − Blindern 0315 Oslo, Norway, and Norwegian University of Life Sciences, Department of Chemistry, Biotechnology and Food Science,
| | - Elna Nilsson
- Laboratoire Interuniversitaire des Systèmes Atmosphériques, UMR 7583, University of Paris 7 and Paris 12, Créteil, France, Copenhagen Center for Atmospheric Research, Department of Chemistry, University of Copenhagen, Universitetsparken 5 DK-2100 Copenhagen OE, Denmark, Centre for Theoretical and Computational Chemistry, Department of Chemistry, University of Oslo, Pb. 1033 − Blindern 0315 Oslo, Norway, and Norwegian University of Life Sciences, Department of Chemistry, Biotechnology and Food Science,
| | - Jean-Francois Doussin
- Laboratoire Interuniversitaire des Systèmes Atmosphériques, UMR 7583, University of Paris 7 and Paris 12, Créteil, France, Copenhagen Center for Atmospheric Research, Department of Chemistry, University of Copenhagen, Universitetsparken 5 DK-2100 Copenhagen OE, Denmark, Centre for Theoretical and Computational Chemistry, Department of Chemistry, University of Oslo, Pb. 1033 − Blindern 0315 Oslo, Norway, and Norwegian University of Life Sciences, Department of Chemistry, Biotechnology and Food Science,
| | - Matthew S. Johnson
- Laboratoire Interuniversitaire des Systèmes Atmosphériques, UMR 7583, University of Paris 7 and Paris 12, Créteil, France, Copenhagen Center for Atmospheric Research, Department of Chemistry, University of Copenhagen, Universitetsparken 5 DK-2100 Copenhagen OE, Denmark, Centre for Theoretical and Computational Chemistry, Department of Chemistry, University of Oslo, Pb. 1033 − Blindern 0315 Oslo, Norway, and Norwegian University of Life Sciences, Department of Chemistry, Biotechnology and Food Science,
| | - Claus J. Nielsen
- Laboratoire Interuniversitaire des Systèmes Atmosphériques, UMR 7583, University of Paris 7 and Paris 12, Créteil, France, Copenhagen Center for Atmospheric Research, Department of Chemistry, University of Copenhagen, Universitetsparken 5 DK-2100 Copenhagen OE, Denmark, Centre for Theoretical and Computational Chemistry, Department of Chemistry, University of Oslo, Pb. 1033 − Blindern 0315 Oslo, Norway, and Norwegian University of Life Sciences, Department of Chemistry, Biotechnology and Food Science,
| | - Yngve Stenstrøm
- Laboratoire Interuniversitaire des Systèmes Atmosphériques, UMR 7583, University of Paris 7 and Paris 12, Créteil, France, Copenhagen Center for Atmospheric Research, Department of Chemistry, University of Copenhagen, Universitetsparken 5 DK-2100 Copenhagen OE, Denmark, Centre for Theoretical and Computational Chemistry, Department of Chemistry, University of Oslo, Pb. 1033 − Blindern 0315 Oslo, Norway, and Norwegian University of Life Sciences, Department of Chemistry, Biotechnology and Food Science,
| | - Bénédicte Picquet-Varrault
- Laboratoire Interuniversitaire des Systèmes Atmosphériques, UMR 7583, University of Paris 7 and Paris 12, Créteil, France, Copenhagen Center for Atmospheric Research, Department of Chemistry, University of Copenhagen, Universitetsparken 5 DK-2100 Copenhagen OE, Denmark, Centre for Theoretical and Computational Chemistry, Department of Chemistry, University of Oslo, Pb. 1033 − Blindern 0315 Oslo, Norway, and Norwegian University of Life Sciences, Department of Chemistry, Biotechnology and Food Science,
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