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Metals, amalgams, and alloys play an instrumental role in almost every facet of our lives. Yet when used or disposed of incorrectly, metals can become serious contaminants in soil and water. Metals may be released into the environment from a number of sources such as buildings, traffic, tapwater systems, and various industrial processes. Dionex has developed columns that can accurately assay groups of metals at very low levels in a variety of matrices, as well as speciate certain elements such as Fe2+ and Fe3+.