Details of Award
NERC Reference : NE/G01972X/1
The gas phase atmospheric photolysis and reactions of key alkyl nitrates and their role in NOy partitioning.
Grant Award
- Principal Investigator:
- Professor D Shallcross, University of Bristol, Chemistry
- Co-Investigator:
- Professor A Orr-Ewing, University of Bristol, Chemistry
- Grant held at:
- University of Bristol, Chemistry
- Science Area:
- Atmospheric
- Overall Classification:
- Atmospheric
- ENRIs:
- Pollution and Waste
- Science Topics:
- Pollution
- Atmospheric Kinetics
- Tropospheric Processes
- Abstract:
- Alkyl nitrates play a crucial role in controlling the budgets of secondary organic aerosols, ozone, NOx, NOy and HOx throughout the troposphere and the importance of these families in determining atmospheric composition, the earth's radiative balance and any future change in climate can not be overemphasised. A number of recent regional and global model studies have demonstrated that vital kinetic and photolytic parameters, especially for the alkyl nitrates formed from the oxidation of biogenic volatile organic compounds, are missing, preventing atmospheric chemical models from describing oxidant chemistry well and hence determining lifetimes of key greenhouse gases and surface pollutants. These kinetic and photolytic parameters include their loss rate via photolysis, loss rate via reaction with OH and O3 and whether NOx is released on reaction with OH and O3. In this study a combination of Turbulent-Flow Chemical Ionisation Mass Spectrometry coupled with a Gas chromatography- electron capture detector (GC-ECD) for the detection of alkyl nitrates will be used to characterise the kinetics of reaction with OH of key alkyl nitrates, whilst a relative rate technique coupled with GC-ECD and GC-MS will be used to characterise the kinetics of reaction of unsaturated organic nitrates with O3 and a state of the art flash photolysis cavity ring system will be used to measure the photolysis and quantum yield of organic nitrates. Such data will be incorporated into models describing the troposphere and compared with available measurements. The proposed work will be crucial to the understanding of the effects of biogenic volatile organic compounds on atmospheric pollution and climate change.
- Period of Award:
- 1 Oct 2009 - 31 Mar 2013
- Value:
- £410,379 Split Award
Authorised funds only
- NERC Reference:
- NE/G01972X/1
- Grant Stage:
- Completed
- Scheme:
- Standard Grant (FEC)
- Grant Status:
- Closed
- Programme:
- Standard Grant
This grant award has a total value of £410,379
FDAB - Financial Details (Award breakdown by headings)
| DI - Other Costs | Exception - Equipment | Indirect - Indirect Costs | DA - Investigators | DI - Staff | DA - Estate Costs | DA - Other Directly Allocated | DI - T&S |
|---|---|---|---|---|---|---|---|
| £34,315 | £44,512 | £100,486 | £35,012 | £71,957 | £42,608 | £71,015 | £10,471 |
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