Abstract
This chapter concerns the more practical aspects of the DEMS instrument, covering the instrument characterisation, influence of experimental variables and measurement parameters, calibration procedures and finally, error and maintenance considerations. The characterisation and evaluation of the DEMS instrument is crucial to finding optimum experimental parameters, discovering possible areas of improvement during the development process, and to understanding the capabilities and constraints of the instrument before any research is conducted. This process is separated into the evaluation of the three principle DEMS components, to re-iterate the electrochemical cell, the membrane interface, and the vacuum system including QMS whose capabilities combine towards the overall performance of the instrument. Following this, the methodologies and setups used to optimise and calibrate the QMS and the DEMS instrument as a whole are presented. The contents of this chapter should serve to provide a practical understanding of the DEMS instrumental variables and document calibration procedures so that the instrument can be used in confidence by future users.
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Ashton, S. (2012). Practical Aspects of the DEMS Instrument. In: Design, Construction and Research Application of a Differential Electrochemical Mass Spectrometer (DEMS). Springer Theses, vol 8. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-30550-4_4
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DOI: https://doi.org/10.1007/978-3-642-30550-4_4
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