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U.S. Department of Energy
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Measurements of biogenic hydrocarbons in ambient air: Addendum to biogenic inventories for California -- Generation of essential databases. Final report

Technical Report ·
OSTI ID:678992

During the 1997 Southern California Ozone Study/North American Research Strategy for Tropospheric Ozone (SCOS97-NARSTO), UC Riverside measured concentrations of isoprene, methacrolein (MACR), and methyl vinyl ketone (MVK) in the northern South Coast Air Basin at Pine Mountain, Mount Baldy, the highlands above Azusa, and the city of Azusa. MACR and MVK are the main oxidation products of isoprene photochemistry. The highest concentrations for isoprene were found at the mountain sites having high leaf biomass, where the ratio of MVK/MACR remained relatively constant throughout the day. This implies that isoprene oxidation is the source of MVK/MACR concentrations in the mountains.

Research Organization:
California Univ., Office of Environmental Science and Engineering, Los Angeles, CA (United States); California State Air Resources Board, Research Div., Sacramento, CA (United States)
Sponsoring Organization:
California State Air Resources Board, Sacramento, CA (United States)
OSTI ID:
678992
Report Number(s):
PB--99-163644/XAB; CNN: Contract ARB-95-309
Country of Publication:
United States
Language:
English

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