Reactivity of 2-ethyl-1-hexanol in the atmosphere.
Rate coefficients at room temperature for the reaction of 2-ethyl-1-hexanol with OH and NO(3) radicals and with Cl atoms have been determined in a 150 L PTFE chamber using GC-FID/SPME and FTIR as detection systems. The rate coefficients k (in units of cm(3) molecule(-1) s(-1)) obtained were: (1.13 +/- 0.31) 10(-11) for the OH reaction, (2.93 +/- 0.92) 10(-15) for the NO(3) reaction and (1.88 +/- 0.25) 10(-10) for the Cl reaction. Despite the high concentrations of 2-ethyl-1-hexanol, especially in indoor air, this is the first kinetic study carried out to date for these reactions. The results are consistent with the expected reactivity given the chemical structure of 2-ethyl-1-hexanol. Calculated atmospheric lifetimes reveal that the dominant loss process for 2-ethyl-1-hexanol is clearly the daytime reaction with the hydroxyl radical.
Instituto de Tecnologías Química y Medioambiental (ITQUIMA), Laboratorio de Contaminación Atmosférica, Universidad de Castilla La Mancha, Avda Camilo José Cela 10, 13071 Ciudad Real, Spain.
María Paz
MP
Gallego-Iniesta García
Alberto
A
Moreno Sanroma
María Pilar
MP
Martín Porrero
Araceli
A
Tapia Valle
Beatriz
B
Cabañas Galán
María Sagrario
MS
Salgado Muñoz