Scientist
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PD Dr Thomas Letzel
PD Dr Thomas Letzel
// born 1970, studied chemistry (1992–1998) at the TU Muenchen and the LMU Muenchen OMI (Organic Molecule Identification) in water using LC-MS(/MS): Steps from “unknown” to “identified”: a contribution to the discussionIn a class of its own - von PD Dr Thomas Letzel, Thomas Lucke, Dr Wolfgang Schulz, Dr Manfred Sengl, Dr Marion Letzel
The analysis of small organic molecules in water is highly demanding,
on account of the presence of variability in the water matrix (rain-, ground- and drinking water, plus surface and waste water) and the spectrum of chemical structures, present in a wide range of concentrations. In the Lab & More International, 2014, 1 (pp. 14–18), we introduced the water analysis methods of target screening, suspects screening and non-target screening,... Non-target screening, suspected-target screening and target screening – of technologies and philosophies, databases and craftsDetective work with molecular accuracy - von PD Dr Thomas Letzel
The three terms in the title, as well as “Known Unknowns” and “Unknown Unknowns” are new keywords that are currently confusing the analytical water scene. The procedure in use of just these technologies, however, often is not consistent yet. This article will now try to put the many different terms and approaches into some semblance of order. At the same time, it will report on pragmatic applications.
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