52 samples were analyzed for the following trace elements by the following methods: gold, silver, antimony, arsenic, lead and molybdenum using Atomic Absorption Spectroscopy after HCl:HNO3 (3:1) acid digestion; copper and zinc using Inductively Coupled Plasma- Atomic Emission Spectroscopy after HCl:HNO3 (3:1) acid digestion; mercury using Cold Vapor Atomic Absorption Spectroscopy, tin using X-ray Fluorescence, and tungsten using Colorimetric methods. Analysis methods for fluorine were not documented.
