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Environ Sci Pollut Res Int

Title:		"Keto-ether and glycol-ethers in the troposphere: reactivity toward OH radicals and Cl atoms, global lifetimes, and atmospheric implications"
Author(s):		Barrera JA; Dalmasso PR; Taccone RA; Lane SI;
Address:		"Instituto de Investigaciones en Fisicoquimica de Cordoba (INFIQC), CONICET, Centro Laser de Ciencias Moleculares, Departamento de Fisicoquimica, Facultad de Ciencias Quimicas, Universidad Nacional de Cordoba (UNC), Ciudad Universitaria, Pabellon Argentina, Ala 1, 5000, Cordoba, Argentina. Centro de Investigacion y Transferencia en Ingenieria Quimica Ambiental (CIQA), Departamento de Ingenieria Quimica, Facultad Regional Cordoba, Universidad Tecnologica Nacional (UTN), Maestro Lopez esq. Cruz Roja Argentina, 5016, Cordoba, Argentina. p-dalmasso@hotmail.com. Instituto de Investigaciones en Fisicoquimica de Cordoba (INFIQC), CONICET, Centro Laser de Ciencias Moleculares, Departamento de Fisicoquimica, Facultad de Ciencias Quimicas, Universidad Nacional de Cordoba (UNC), Ciudad Universitaria, Pabellon Argentina, Ala 1, 5000, Cordoba, Argentina. rtacone@fcq.unc.edu.ar"
Journal Title:		Environ Sci Pollut Res Int
Year:		2017
Volume:		20170923
Issue:		33
Page Number:		26049 - 26059
DOI:		10.1007/s11356-017-0235-4
ISSN/ISBN:		1614-7499 (Electronic) 0944-1344 (Linking)
Abstract:		"Rate coefficients for the gas-phase reactions of OH radicals and Cl atoms with 1-methoxy-2-propanone (1-M-2-PONE), 1-methoxy-2-propanol (1-M-2-POL), and 1-methoxy-2-butanol (1-M-2-BOL) were determined at room temperature and atmospheric pressure using a conventional relative-rate technique. The following absolute rate coefficients were derived: k (1)(OH + 1-M-2-PONE) = (0.64 +/- 0.13) x 10(-11), k (2)(OH + 1-M-2-BOL) = (2.19 +/- 0.23) x 10(-11), k (3)(Cl + 1-M-2-PONE = (1.07 +/- 0.24) x 10(-10), k (4)(Cl + 1-M-2-POL) = (2.28 +/- 0.21) x 10(-10), and k (5) (Cl + 1-M-2-BOL) = (2.79 +/- 0.23) x 10(-10), in units of cm(3) molecule(-1) s(-1). This is the first experimental determination of k (2)-k (5). These rate coefficients were used to discuss the influence of the structure on the reactivity of the studied polyfunctional organic compounds. The atmospheric implications for 1-M-2-PONE, 1-M-2-POL, and 1-M-2-BOL and their reactions were investigated estimating atmospheric parameters such as lifetimes, global warming potentials, and average photochemical ozone production. The approximate nature of these values was stressed considering that the studied oxygenated volatile organic compounds are short-lived compounds for which the calculated parameters may vary depending on chemical composition, location, and season at the emission points"
Keywords:		Atmosphere/*chemistry Chlorine/*chemistry Ethers/*chemistry Global Warming Hydroxyl Radical/*chemistry Kinetics Ozone Volatile Organic Compounds/chemistry Atmospheric acceptability Atmospheric chemistry Cl atoms Gas-phase reactivity trends Keto- and glyco;
Notes:		"MedlineBarrera, Javier A Dalmasso, Pablo R Taccone, Raul A Lane, Silvia I eng PIP 11220090100436/CONICET/ PICT2010708/BID2437/OC-AR/ANPCyT-FONCyT/ 05/C146/SECyT-UNC/ Germany 2017/09/25 Environ Sci Pollut Res Int. 2017 Nov; 24(33):26049-26059. doi: 10.1007/s11356-017-0235-4. Epub 2017 Sep 23"