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    STUDIA GEOLOGIA - Issue no. 1 / 2007  
         
  Article:   STABLE ISOTOPE FRACTIONATION OF GAMMA HEXACHLORCYCLOHEXANE (LINDANE) DURING REDUCTIVE DECHLORINATION BY SULPHATE-REDUCING BACTERIA.

Authors:  STEFANIE WEBER, SILVIU-LAURENTIU BADEA, HANS-HERMANN RICHNOW, CARSTEN VOGT, ANDREI-FLORIN DANET. 		 
       
         
  Abstract:  Reductive dehalogenation of hexachlorocyclohexanes (HCHs) is the most likely degradation pathway in anoxic environments and stable isotope fraction analysis (SIFA) may be a promising tool for assessing the reductive dehalogenation of HCH in field studies. SIFA is taking advantage of the preferential transformation of lighter isotopomeres during a degradation reaction, thus leading to an enrichment of heavier isotopes in the residual phase in the course of biodegradation. The isotope fractionation process can be quantified by the isotope fractionation factor (a) using the Rayleigh model.  
         
     
         
         
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