title: Soft metal preferences of 1,3-benzenediamidoethanethiol.
abstract: Recent studies indicate that the sodium salt of 1,3-benzenediamidoethanethiol (BDET) is both economical and effective in precipitating mercury and other heavy metals from water. Because wastewaters and contaminated natural waters may contain a variety of heavy metals, it is important to determine how different heavy metals may interact with BDET, and whether free metals may displace those that are bound. To explore this possibility, Cd-, Cu-, Pb-, Mn-, Hg- and Zn-BDET were leached separately under a nitrogen purge for up to 240 h in pH 3 aqueous solutions containing 0.100 mmol of all five heavy metals. The leaching studies indicate that dissolved Hg has a strong tendency to displace Cd, Cu, Mn, Pb, and Zn from the BDET structure.
authors.affiliation: Department of Chemistry, University of Kentucky, 40506-0055, Lexington, KY, USA.
authors.forename: Matthew M
authors.initials: MM
authors.lastname: Matlock
authors.forename: Brock S
authors.initials: BS
authors.lastname: Howerton
authors.forename: Michael
authors.initials: M
authors.lastname: Van Aelstyn
authors.forename: Kevin R
authors.initials: KR
authors.lastname: Henke
authors.forename: David A
authors.initials: DA
authors.lastname: Atwood
mesh_terms: D001555:Benzene Derivatives / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D008024:Ligands; D019216:Metals, Heavy / Q000737:chemistry*; D013438:Sulfhydryl Compounds / Q000737:chemistry*; D018508:Water Purification / Q000379:methods*
chemical_list: C473336:1,3-benzenediamidoethanethiol; D001555:Benzene Derivatives; D008024:Ligands; D019216:Metals, Heavy; D013438:Sulfhydryl Compounds