Flame IonizationChromatography, GasFlame RetardantsOils, VolatileGas Chromatography-Mass SpectrometryAlkanesCalibrationSpectrometry, Mass, Electrospray IonizationHalogenated Diphenyl EthersPolybrominated BiphenylsReproducibility of ResultsHydrocarbons, BrominatedAir IonizationSpectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization