AcetyleneFlame RetardantsFlame IonizationNitrogenaseHalogenated Diphenyl EthersPolybrominated BiphenylsEthaneNitrogen FixationHydrocarbons, BrominatedAlkynesTungstenAzotobacterPhotometryNitrosomonasPhenyl EthersHydrocarbons, AcyclicEthylenesSpectrophotometry, AtomicMolybdoferredoxinNitrous OxideHydrogenDeltaproteobacteriaOxidation-ReductionAzotobacter vinelandiiMethaneFiresMolybdenumChromatography, GasSpirillumPropaneBromineAmmoniaOrganophosphatesNitrogen