title: Measuring the partitioning of silver to organic carbon using solubility enhancement.
abstract: Ionic silver is toxic to aquatic organisms at low concentrations. However, complexation to binding sites on natural organic matter has been shown to reduce silver toxicity. Research indicates that there is a need to develop reliable methods for characterizing silver binding at very low silver ion concentrations where strong binding sites have a significant influence on silver speciation. This study provides an analytical method for measuring silver binding using a solubility-enhancement procedure. Preliminary experimental results are provided that demonstrate strong silver binding in the presence of natural organic matter at very low silver ion concentrations.
authors.affiliation: Environmental Engineering Department, Manhattan College, Riverdale, New York 10471, USA.
authors.forename: Kevin J
authors.initials: KJ
authors.lastname: Rader
authors.forename: Timothy S
authors.initials: TS
authors.lastname: Shadi
authors.forename: John D
authors.initials: JD
authors.lastname: Mahony
authors.forename: Dominic M
authors.initials: DM
authors.lastname: Di Toro
mesh_terms: D002244:Carbon / Q000737:chemistry*; D008956:Models, Chemical; D009930:Organic Chemicals / Q000737:chemistry*; D012834:Silver / Q000737:chemistry*; D012995:Solubility
chemical_list: D009930:Organic Chemicals; D012834:Silver; D002244:Carbon