Zinc IsotopesZincSulfur IsotopesIsotopesCarbon IsotopesCarbon-Carbon LyasesIsotope LabelingChemical FractionationOxygen IsotopesMethyl ChlorideDeuteriumSulfur-Reducing BacteriaBiodegradation, EnvironmentalNitrogen IsotopesIron IsotopesEthylene DichloridesDesulfitobacteriumSulfidesXanthobacterHyphomicrobiumCarbon Compounds, InorganicSulfatesTolueneEpsilonproteobacteriaXylenesMethaneGeologic SedimentsTetrachloroethyleneZinc FingersBacteria, Aerobic