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DESCRIPTION:Prior to the final approval by ECHA\, each chemical has to be t
 ested for its persistence. A chemical is persistent\, when it is slowly or
  not transformed\, and the amount of non-extractable residues (NERs) is hi
 gh. High NERs is criterion for declining the approval of the chemical. The
  NERs cannot be extracted from the soil or sediment\; they can be potentia
 lly toxic chemicals (xenobiotic NERs) or harmless microbial biomass (bioge
 nic NERs). The NER analytics using standard OECD mass balance tests applyi
 ng carbon isotopes is difficult and laborious. In contrast to carbon\, a l
 arge proportion of the incorporated deuterium atoms into microbial biomass
  will be quickly released to water\, thus biogenic NERs will not contain h
 igh amounts of heavy hydrogen isotope. Therefore\, this new deuterium stab
 le isotope probing approach will simplify NERs speciation without the need
  of extensive biogenic NER analytics. Thereby\, it can support the chemica
 l industry and the authorities in the evaluation of a chemical&rsquo\;s pe
 rsistence and the associated environmental risk assessment.\nFor more info
 rmation\, please refer to: Cefic-LRI Innovative Science Award: http://cefi
 c-lri.org/news/cefic-lri-to-invest-e100000-into-better-testing-methods-for
 -persistent-chemicals/\n&nbsp\;\n**** invited by Tillmann L&uuml\;ders\, E
 cological Microbiology
DTSTART;TZID=Europe/Berlin:20210527T121500
DTEND;TZID=Europe/Berlin:20210527T134500
SUMMARY:Dr. Karolina Nowak\, Environmental Biotechnology Helmholtz Centre f
 or Environmental Research - UFZ Leipzig und: Geobiotechnology\, TU Berlin 
 (Homepage): Tracking pesticide turnover in soils with stable isotope trace
 rs
TRANSP:TRANSPARENT
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