Atomic Absorption Spectroscopy Reveals Anomalous Transfer of Heavy Metal across a Water/1,2-DCE Interface

0549119 - ÚFCH JH 2022 RIV PT eng J - Journal Article
Silver, Barry Richard
Atomic Absorption Spectroscopy Reveals Anomalous Transfer of Heavy Metal across a Water/1,2-DCE Interface.
Portugaliae Electrochimica Acta. Roč. 39, č. 6 (2021), s. 415-420. ISSN 0872-1904. E-ISSN 0872-1904
R&D Projects: GA ČR(CZ) GA17-09980S
Institutional support: RVO:61388955
Keywords : complex-formation * extraction * ions * water * liquid/liquid * extraction * metal * non-polarizable and ITIES (interface between two immiscible electrolyte solutions)
OECD category: Physical chemistry
Method of publishing: Open access

Atomic absorption spectroscopy (AAS) of samples taken from the organic phase of a water/1,2-dichloroethane (1,2-DCE) interfacial electrochemical cell, rendered non-polarizable by the tetraphenylarsonium common-ion, revealed significant transfer of heavy metal from the aqueous phase. Heavy metal concentration found within 1,2-DCE cannot be explained via ion pair formation between the metallic species and the commonion, nor by ion pair formation between the metallic species and the hydrophobic anion of the organic phase. Results suggest that metal may have been anomalously transferred into 1,2-DCE within water-in-oil droplets formed by spontaneous emulsification of the interfacial region.
Permanent Link: http://hdl.handle.net/11104/0325133