Nickel Compounds Comet Composition Hydrocarbons Lunar Material Ices and Gases Fire Retardants Ammonium Phosphate Additives Elemental Analysis Fire Temperature Beer Mineral Composition Volatile Compounds Heavy Metals Astrochemistry Spectroscopy Nickel Vapor Dioxide Carbon Environmental Chemistry Toxicology Elements in Meteors Carbon Dioxide Interstellar Materials Gases in Comets Nickel Dioxide of Carbon Element Oxygen Gases Meteorites Planetary Chemistry