caa a22 4500 477061494 CHVBK 20180405111402.0 cr unu---uuuuu 170330e19961001xx s 000 0 eng 10.1007/BF00053791 doi (NATIONALLICENCE)springer-10.1007/BF00053791 Natural and anthropogenic C2 to C6 hydrocarbons in the central-eastern Venezuelan atmosphere during the rainy season [Elektronische Daten] [Loreto Donoso, Rodrigo Romero, Alberto Rondón, Emmanuel Fernandez, Pedro Oyola, Eugenio Sanhueza] The levels of low molecular weight hydrocarbons were measured at pristine sites and rural locations affected by hydrocarbon emissions from oil and gas producing fields in Venezuela. At the clean sites, lower concentrations of C2 to C6 alkanes were observed, whereas, in comparison with remotes sites, very much higher levels were measured at the polluted sites. Alkenes present relatively high concentrations, with isoprene being the most abundant, all over the study region. The main sources of alkenes are likely to be natural, mainly from vegetation. The levels of alkanes recorded at the clean sites and the alkene levels found everywhere in the region are in agreement with the values reported for other clean sites in the tropics. The increase of ozone production capacity due to the anthropogenic emissions of alkanes from oil and gas fields was estimated. Due to the presence in the atmosphere of important amounts of naturally emitted isoprene, ethene and propene, which makes a substantial contribution to the reactivity of the hydrocarbon mixture, a small increase (<5%) was estimated to occur in the capacity of the ozone production at a regional scale during the rainy season. Kluwer Academic Publishers, 1996 nonmethane hydrocarbons nationallicence isoprene nationallicence tropical atmosphere nationallicence oil field emissions nationallicence potential ozone formation nationallicence Donoso Loreto Atmospheric Chemistry Lab., IVIC, Apartado 21827, 1020A, Caracas, Venezuela aut Romero Rodrigo Air Pollution Lab., ITM, Stockholm University, Sweden aut Rondón Alberto Atmospheric Chemistry Lab., IVIC, Apartado 21827, 1020A, Caracas, Venezuela aut Fernandez Emmanuel Atmospheric Chemistry Lab., IVIC, Apartado 21827, 1020A, Caracas, Venezuela aut Oyola Pedro Air Pollution Lab., ITM, Stockholm University, Sweden aut Sanhueza Eugenio Atmospheric Chemistry Lab., IVIC, Apartado 21827, 1020A, Caracas, Venezuela aut Journal of Atmospheric Chemistry Kluwer Academic Publishers; gopher://gopher.wkap.nl 25/2(1996-10-01), 201-214 0167-7764 25:2<201 1996 25 10874 https://doi.org/10.1007/BF00053791 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00053791 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Donoso Loreto Atmospheric Chemistry Lab., IVIC, Apartado 21827, 1020A, Caracas, Venezuela aut NATIONALLICENCE 700 1- Romero Rodrigo Air Pollution Lab., ITM, Stockholm University, Sweden aut NATIONALLICENCE 700 1- Rondón Alberto Atmospheric Chemistry Lab., IVIC, Apartado 21827, 1020A, Caracas, Venezuela aut NATIONALLICENCE 700 1- Fernandez Emmanuel Atmospheric Chemistry Lab., IVIC, Apartado 21827, 1020A, Caracas, Venezuela aut NATIONALLICENCE 700 1- Oyola Pedro Air Pollution Lab., ITM, Stockholm University, Sweden aut NATIONALLICENCE 700 1- Sanhueza Eugenio Atmospheric Chemistry Lab., IVIC, Apartado 21827, 1020A, Caracas, Venezuela aut NATIONALLICENCE 773 0- Journal of Atmospheric Chemistry Kluwer Academic Publishers; gopher://gopher.wkap.nl/ 25/2(1996-10-01), 201-214 0167-7764 25:2<201 1996 25 10874 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer