Details of Award
NERC Reference : NER/T/S/2000/01092
Construc, valida & appli of FM frequency modulated IR diode laser absorption spectrometer for kinetic measurements of atmospherically relevant reac
Grant Award
- Principal Investigator:
- Professor P Seakins, University of Leeds, Sch of Chemistry
- Co-Investigator:
- Professor M Pilling, University of Leeds, Sch of Chemistry
- Grant held at:
- University of Leeds, Sch of Chemistry
- Science Area:
- None
- Overall Classification:
- Atmospheric
- ENRIs:
- Pollution and Waste
- Global Change
- Science Topics:
- Atmospheric Kinetics
- Abstract:
- Our current flash photolysis/IR diode laser system will be comprehensively upgraded to study a variety of reactions pertinent to major issues in atmospheric chemistry. The upgrade will include *Full frequency modulation for enhanced sensitivity, *Multiple species detection, *Low temperature (~190 K) capability. We then propose to use the apparatus to probe 3 main areas: 1. Product studies, looking particularly at site specific abstraction reactions, and the formation of HX from radical-radical reactions under stratospheric conditions. 2. HO2 studies will represent our first study of radical species, facilitated by the enhanced S/N of the modulated experiment and the use of an etalon to lock on to the radical transition. Following validation studies on HO2+NO reaction over a wide range of conditions, we will examine peroxy radical recombinations, looking both at the kinetics but also the product channels (e.g. HCHO production from HO2+CH3O2. 3. Alkoxy radical reactions represent a major branching point in tropospheric VOC oxidation (hence affecting ozone formation) yet are very poorly characterised. Detection of HO2 and carbonyl products will yield a direct determination of decomposition vs O2 reactions.
- NERC Reference:
- NER/T/S/2000/01092
- Grant Stage:
- Completed
- Scheme:
- Directed Pre FEC
- Grant Status:
- Closed
- Programme:
- Core Strategic Measurements
This grant award has a total value of £180,922
FDAB - Financial Details (Award breakdown by headings)
| Total - Staff | Total - T&S | Total - Other Costs | Total - Indirect Costs | Total - Equipment |
|---|---|---|---|---|
| £62,416 | £2,724 | £8,872 | £28,711 | £78,200 |
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