chalcogel
 n.— «The discovery, reported in the latest issue of Science magazine, has proven to be the ideal cleaner for waters infested with heavy metals like cadmium, lead or mercury. Chalcogel is a rigid material that can be used to clean not only waters, but also other environments where the so-called “molecular sieves” are required. A molecular sieve is a material containing tiny pores of a precise and uniform size that is used as an adsorbent for gases and liquids.» —“Chalcogel Could Clean Water of Heavy Metals” eFluxMedia July 28, 2007. (source: Double-Tongued Dictionary)

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