Part I is a supplement to the EMSL-Cincinnati publication Methods for the Determination of Metals in Environmental Samples and was prepared to revise and place in the Environmental Monitoring Management Council (EMMC) format certain spectrochemical methods used for metals. Part II, the EMSL-Cincinnati publication Methods for the Determination of Inorganic Substances in Environmental Samples was prepared as the continuation of an initiative to gather together a compendium of standardized laboratory analytical methods.Methods for the Determination of Metals in Environmental Samples Spectrometry Plasma?Mass Spectrometry Emission Spectrometry Ion Chromotography Determination of Mercury in Sediments by Cold Vapor Atomic Absorption Spectrometry Methods for Determination of Inorganic Substances in Environmental Samples This two part handbook is a gathering of a compendium of standardized laboratory analytical methods for determining metals in environmental samples.