Identification of a Fully Dechlorinated Product of Chlordecone in Soil Microcosms and Enrichment Cultures

Anaerobic microcosms
constructed with soil from Guadeloupe, amended
with ethanol and acetone and incubated anaerobically for more than
a decade, transformed chlordecone (CLD) into a suite of progressively
more dechlorinated products, including a fully dechlorinated carboxylated
indene product. This fully dechlorinated transformation product has
never before been observed and indicates that complete dechlorination
of CLD is possible. The carboxylated indene was detected by LC-MS,
and structure was confirmed by LC-MS/MS using a Q-Exactive Orbitrap
mass spectrometer.