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SUMMARY:Isotopic analyses of micropollutant transformation - Environmental
  applications or mechanistic studies?
DTSTART:20121127T161500
DTEND:20121127T171500
DTSTAMP:20260428T183534Z
UID:72ffb21e383f37023bbe708b9b6d4f9ba16bb7928bc6f37160cf98be
CATEGORIES:Conferences - Seminars
DESCRIPTION:Professor Thomas Hofstetter\, Environmental Chemistry\, EAWAG\
 nA profound understanding of organic micropollutant transformation process
 es in the environment is essential to assess the impact of chemical pollut
 ion on humans and the environment. Successful applications at contaminated
  sites have shown that the analysis of stable isotope ratios in individual
  organic compounds is becoming a key techniques for evaluating (bio)degrad
 ation. Recent advances in analytical techniques have increased the number 
 of contaminant classes and reactions that can be examined\, but\, on the o
 ther hand\, also challenged our understanding of degradation mechanisms an
 d kinetics\, especially in enzymatic systems. As will be illustrated for n
 itro- and aminoaromatic compounds\, the combined investigation of C\, N\, 
 and H isotope ratios offers unique opportunities to distinguish biotic and
  abiotic transformations even if they occur in parallel in complex environ
 mental matrices. A more widespread application of compound-specific isotop
 e analysis to emerging micropollutants\, however\, will depend on the eluc
 idation of  the kinetic isotope effects responsible for pathway-specific 
 isotope fractionation trends.
LOCATION:GR A3 32 http://plan.epfl.ch/?room=GR%20A3%2032
STATUS:CONFIRMED
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