Novel approaches to the measurement of atmospheric VOC mixtures using soft chemical-ionisation mass spectrometry - drift-tube techniques

Natural and anthropogenic processes emit a wide variety of volatile organic compounds (VOCs) into the atmosphere. Many have different chemical properties, affecting their contribution to the production of ozone and secondary organic aerosol, and their toxicity. One approach to measure such species is mass spectrometry, for example PTR-MS (Proton Transfer Reaction Mass Spectrometry) may be used - however compound identification using MS approaches is challenging, as is not always clear which compounds are contributing to a given mass-charge ratio (m/z): many VOCs may be isobaric – i.e. have the same whole-number molecular mass (or are isomeric, with identical molecular masses), and may fragment. The aim of this project is to develop a new approach to distinguish between isobaric / isomeric atmospheric VOCs, using the PTR-MS approach, through control of the target compound fragmentation. The project will involve laboratory development work in Birmingham and at our industrial partner, Kore Technologies Ltd, followed by trial / demonstration field measurements of atmospheric compounds, to demonstrate the viability of the method for identification of species such as aromatic and biogenic VOCs, building upon our successful proof-of-concept work.

The project will provide a comprehensive interdisciplinary training in analytical science and mass spectrometric / molecular physics techniques, and in atmospheric composition and chemistry. Through the industrial CASE partner, Kore Technologies Ltd, the project will also provide exposure to a fast-moving commercial R&D environment to complement the academic training. Applications are invited from candidates who have, or expect to obtain, a good honours degree in a relevant subject (e.g. Chemistry, Physics, Environmental Science, Engineering).

For further information, please see the full project description at the link below, or contact either
Dr William (Bill) Bloss, GEES – [Email Address Removed], Tel. 0121 414 2558
Dr Chris Mayhew, Physics – [Email Address Removed] Tel. 0121 414 4729

To apply, please use the link below; please advise Dr Bloss by email of your candidate ID number after completing your application. Applications will be reviewed on a monthly basis until the studentship is filled.

Full Description at :
http://www.birmingham.ac.uk/Documents/college-les/gees/postgraduate-opportunities-2013/IdentificationwithoutSeparation.pdf

Application Link :
http://www.birmingham.ac.uk/students/courses/postgraduate/research/gees/environmental-sci-risk-mgt.aspx

To find out more about studying for a PhD at the University of Birmingham, including full details of the research undertaken in each school, the funding opportunities for each subject, and guidance on making your application, you can now order your copy of the new Doctoral Research Prospectus, at: www.birmingham.ac.uk/students/drp.aspx

Keywords: Atmospheric Chemistry, Air Pollution, Analytical Chemistry, Environmental Chemistry, Mass Spectrometry, Atmospheric Physics