SEPARATION OF MERCURY (II), LEAD (II), AND SILVER (I) FROM AQUEOUS SOLUTION USING AN AMINOPOLYCARBOXYLATE SILICA

Abstract

A quartz crystal microbalance modified by the attachment of silica particles derivatized with the aminopolycarboxylate ligand N-[(3-trimethoxysilyl)propyl]ethylenediamine-N,N′,N′-triacetic acid has been employed to assess conditions under which mercury (II), lead (II), and silver (I) nitrates may be separated in aqueous solution. The separation protocol, which involved removal of Hg(II), as [HgI₄]²⁻, and Pb(II) with H⁺ was successfully applied to a batch-wise separation of the 3 metal ions.

Keywords:

• Quartz crystal microbalance
• N-[(3-Trimethoxysilyl)propyl]ethylenediamine-N,N′,N′-triacetic acid
• Silica
• Mercury (II) nitrate
• Lead (II) nitrate
• Silver (I) nitrate
• Selective separation

Acknowledgments