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Conference Paper: Mass spectrometric and quantum chemical studies of gold speciation in water vapor

TitleMass spectrometric and quantum chemical studies of gold speciation in water vapor
Authors
Lemke, KH
Issue Date2014
Citation
The 24th Goldschmidt Conference of the Geochemical Society (Goldschmidt 2014), Sacramento, CA., 8-13 June 2014. How to Cite?
AbstractThe mobility and transport of gold in hydrothermal vapors is strongly influenced by the molecular speciation of gold, which is highly sensitive to pH, oxidation state and water vapor pressure. In this study, electrospray ionization mass spectrometry (ESI-MS) and ab initio tools are applied to examine the composition, structure and stability of gold chloride clusters. In brief, electrospray ionization of aqueous AuCl3 solutions leads to mononuclear clusters of the general form [AuCl2]+(H2O)n (n=0-4), [AuOHCl]+(H2O)n (n=0-1) and [AuCl2]+(HCl)2(H2O)n (n=0-4). Additionally, ion signals due to the dinuclear species [Au2Cl5-xOHx]+(H2O)n (x=0-1) are present …
Persistent Identifierhttp://hdl.handle.net/10722/218253

 

DC FieldValueLanguage
dc.contributor.authorLemke, KH-
dc.date.accessioned2015-09-18T06:31:44Z-
dc.date.available2015-09-18T06:31:44Z-
dc.date.issued2014-
dc.identifier.citationThe 24th Goldschmidt Conference of the Geochemical Society (Goldschmidt 2014), Sacramento, CA., 8-13 June 2014.-
dc.identifier.urihttp://hdl.handle.net/10722/218253-
dc.description.abstractThe mobility and transport of gold in hydrothermal vapors is strongly influenced by the molecular speciation of gold, which is highly sensitive to pH, oxidation state and water vapor pressure. In this study, electrospray ionization mass spectrometry (ESI-MS) and ab initio tools are applied to examine the composition, structure and stability of gold chloride clusters. In brief, electrospray ionization of aqueous AuCl3 solutions leads to mononuclear clusters of the general form [AuCl2]+(H2O)n (n=0-4), [AuOHCl]+(H2O)n (n=0-1) and [AuCl2]+(HCl)2(H2O)n (n=0-4). Additionally, ion signals due to the dinuclear species [Au2Cl5-xOHx]+(H2O)n (x=0-1) are present …-
dc.languageeng-
dc.relation.ispartofGoldschmidt 2014-
dc.titleMass spectrometric and quantum chemical studies of gold speciation in water vapor-
dc.typeConference_Paper-
dc.identifier.emailLemke, KH: kono@hku.hk-
dc.identifier.authorityLemke, KH=rp00729-
dc.description.naturepostprint-
dc.identifier.hkuros252237-

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