4 documents found, page 1 of 1
Atmospheric mixing ratios of methyl ethyl ketone (2-butanone) in tropical, bore...
Yáñez-Serrano, Ana Maria; Nölscher, Anke C.; Bourtsoukidis, Efstratios; Derstroff, Bettina; Zannoni, Nora; Gros, Valérie; Lanza, Matteo; Brito, Joel F.Methyl ethyl ketone (MEK) enters the atmosphere following direct emission from vegetation and anthropogenic activities, as well as being produced by the gas-phase oxidation of volatile organic compounds (VOCs) such as n-butane. This study presents the first overview of ambient MEK measurements at six different locations, characteristic of forested, urban and marine environments. In order to understand better th...
Strong sesquiterpene emissions from Amazonian soils
Bourtsoukidis, Efstratios; Behrendt, Thomas; Yáñez-Serrano, Ana Maria; Hel?en, Heidi; Diamantopoulos, Efstathios; Catão, Elisa Caldeira PiresThe Amazon rainforest is the world's largest source of reactive volatile isoprenoids to the atmosphere. It is generally assumed that these emissions are products of photosynthetically driven secondary metabolism and released from the rainforest canopy from where they influence the oxidative capacity of the atmosphere. However, recent measurements indicate that further sources of volatiles are present. Here we s...
Monoterpene chemical speciation in a tropical rainforest:variation with season,...
Yáñez-Serrano, Ana Maria; Nölscher, Anke C.; Bourtsoukidis, Efstratios; Alves, Eliane Gomes; Ganzeveld, Laurens N.; Bonn, Boris; Wolff, StefanSpeciated monoterpene measurements in rainforest air are scarce, but they are essential for understanding the contribution of these compounds to the overall reactivity of volatile organic compound (VOC) emissions towards the main atmospheric oxidants, such as hydroxyl radicals (OH), ozone (O3) and nitrate radicals (NO3). In this study, we present the chemical speciation of gas-phase monoterpenes measured in the...
Diel and seasonal changes of biogenic volatile organic compounds within and abo...
Yáñez-Serrano, Ana Maria; Nölscher, Anke C.; Williams, Jonathan C.; Wolff, Stefan; Alves, Eliane Gomes; Martins, Giordane AugustoThe Amazonian rainforest is a large tropical ecosystem, which is one of the last pristine continental terrains. This ecosystem is ideally located for the study of diel and seasonal behaviour of biogenic volatile organic compounds (BVOCs) in the absence of local human interference. In this study, we report the first atmospheric BVOC measurements at the Amazonian Tall Tower Observatory (ATTO) site, located in cen...