Study Of Biogenic Volatile Organic Compounds In A Rural Background Area

Currently, knowledge on the composition of volatile organic compounds in rural areas is still minimal compared to urban or industrial areas. His determination is a topical issue. given the high potential of biogenic compounds emission and the scarcity of local sources of anthropogenic compounds in such areas as precursors is tropospheric ozone and aerosols. The paraffins are the major compounds in this environment, followed by olefin coin pounds showing more than 30 minimum and average values below the detection limit of the analytical equipment, as is typical in a rural background. During this period the concentrations of anthropogenic compounds have decreased due to the decline in industrial activity in the vicinity. However, certain periods with somewhat higher concentrations than usual reflect the impact of local traffic, human intervention and atmospheric transport phenomena such as polluted air masses. The concentrations of biogenic organic compounds have remained constant over the years, being the most abundant monoterpenes in summer (May-October) in the natural park. Valderejo (Alava, Spain). Eluted in 3 monoterpenes chromatographic signals whose origin lies in the reaction suffer from the same high temperature into the analytical system. Correct identification is performed with the support of a gas chromatography mass spectrometry (GC MS). fitted in ETSI Bilbao, using tools mass spectra and retention rate of each individual compound.