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SUMMARY:Chemical methods for tracing the origin of organic matter in soils
  and  sediments
DTSTART:20100222T161500
DTSTAMP:20260427T204142Z
UID:419a5feee2e30a2cc704a9909e410ccfd43d249e1477515d04fe814f
CATEGORIES:Conferences - Seminars
DESCRIPTION:Grasset\, Laurent (Université de Poitiers\, France)\nLittle i
 s known about the molecular composition and fate of soil organic matter\, 
 a central compartment in the carbon cycle. Due to its complex origin (plan
 ts\, microbes\, fungi)\, it is essential to employ a range of complementar
 y approaches. In this talk\, I will present various analytical chemical te
 chniques\, including 'wet' chemical and pyrolysis methods\, that are being
  used to systematically disentangle complex soil organic matter and releas
 e simpler chemical moieties\, analysable by GC and GC/MS. These techniques
  are being employed extensively to characterise and track the fate of diff
 erent organic matter classes\, e.g. lignin\, proteins\, lipids and carbohy
 drates\, into soils and sediments. The overarching aim is to obtain data f
 or use in models of element cycles (e.g. carbon)\, which are important in 
 assessing the effects of global warming.
LOCATION:GR B3 30
STATUS:CONFIRMED
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