Keto-ether and glycol-ethers in the troposphere: reactivity toward OH radicals and Cl atoms, global lifetimes, and atmospheric implications.

JAVIER A. BARRERA; PABLO R. DALMASSO*; RAÚL A. TACCONE*; SILVIA I. LANE

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH

SPRINGER HEIDELBERG

Lugar: HEIDELBERG; Año: 2017 vol. 24 p. 26049 - 26049

0944-1344

ate 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: k1(OH + 1-M-2-PONE) = (0.64 ± 0.13) × 10−11, k2(OH + 1-M-2-BOL) = (2.19 ± 0.23) × 10−11, k3(Cl + 1-M-2-PONE = (1.07 ± 0.24) × 10−10, k4(Cl + 1-M-2-POL) = (2.28 ± 0.21) × 10−10, and k5 (Cl + 1-M-2-BOL) = (2.79 ± 0.23) × 10−10, in units of cm3 molecule−1 s−1. This is the first experimental determination of k2-k5. 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 lifet