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STRACCIA CEPEDA Vianni Giovanna
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Título:
Cinética en fase gaseosa de las reacciones oxidativas de metil dicloroacetato iniciada por radicales OH y átomos de Cl en condiciones atmosféricas.
Autor/es:
VIANNI G. STRACCIA C.; CYNTHIA B. RIVELA; MARIA B. BLANCO; PETER WIESEN; MARIANO A. TERUEL
Lugar:
Asunción
Reunión:
Simposio; V SIMPOSIO DE QUÍMICA INORGÁNICA, ANALÍTICA Y FISICOQUÍMICA; 2021
Institución organizadora:
Universidad Nacional de Asunción, Facultad de Ciencias Químicas
Resumen:
This investigation reports the first kinetic study for the reactions of OH radicals and Cl atoms with methyl dichloroacetate CHCl2C(O)OCH3) at room temperature and atmospheric pressure using the relative technique. The experiments were performed in a Pyrex glass atmospheric simulation chamber by ?in situ? FTIR spectroscopy. The following rate constants values were determined from the average of a series of measurements: kOH=(3.55±0.47)×10-15 and kCl=(3.31±0.50)×10-13 cm3.molecule-1s-1. In addition, the environmental implications of these reactions were evaluated by the tropospheric lifetimes (τOH=4.5 years and τCl=10 years.); Photochemical Ozone Creation Potential (POCP=0.03); Acidification Potential (AP=0.45) and the Global Warming Potential calculated relative to CO2 on a time horizon of 20, 100 and 500 years (GWP20=103; GWP100=28; GWP500=8).
