Užití membránového vstupu hmotnostního spektrometru v elektrochemii
| Title in English | Use of membrane inlet of mass spectrometer in electrochemisty |
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| Authors | |
| Year of publication | 2002 |
| Type | Article in Periodical |
| Magazine / Source | Chemické Listy |
| MU Faculty or unit | |
| Citation | |
| Field | Electrochemistry |
| Keywords | membrane inlet; differential electrochemical mass spectrometry; DEMS; electro-oxidace; electro-reduction |
| Description | In the paper the principles of the on-line connection of electrochemical cell and mass spectrometer and overview of some theoretical and practical aspects of - differential electrochemical mass spectrometry (DEMS) are given. DEMS is a type of experimental technique, which makes it possible to do investigation of electro-sorption, electro-oxidation and electro-hydrogenation processes of molecules like aromatic hydrocarbons and some other small organic molecules and reaction intermediates. We have demonstrated the use of our experimental set-up for detection, identification and observation in time of volatile and semivolatile species during electrochemical polarisation of working electrode. The results of measurements are presented as a plots of ion currents of selected masses of expected products as a function of working electrode potential (MSCV). Simultaneously the faradaic current-potential curves (CV) were measured as well. |
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