Natural and anthropogenic C2 to C6 hydrocarbons in the central-eastern Venezuelan atmosphere during the rainy season
| Autor: | Alberto Rondón, Rodrigo Romero, Loreto Donoso, Eugenio Sanhueza, Emmanuel Fernandez, Pedro Oyola |
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| Rok vydání: | 1996 |
| Předmět: |
Wet season
Alkane chemistry.chemical_classification Hydrology Atmospheric Science Ozone business.industry Fossil fuel Air pollution medicine.disease_cause Atmosphere chemistry.chemical_compound Hydrocarbon chemistry Environmental chemistry medicine Environmental Chemistry Environmental science business Isoprene |
| Zdroj: | Journal of Atmospheric Chemistry. 25:201-214 |
| ISSN: | 1573-0662 0167-7764 |
| DOI: | 10.1007/bf00053791 |
| Popis: | 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 ( |
| Databáze: | OpenAIRE |
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