State of the art and problems in determining high gold contents in alloys and articles (Review)

Abstract

Methods widely used at analytical laboratories in industry for determining high gold contents (from several percent to 99.9%) in alloys, compounds, solutions, and articles, as well as the existing interna tional and national standards and publications on this topic covering 2001-2010, are reviewed. The review concentrates on publications in which the accuracy of the proposed procedures was estimated.

Macrocyclic Receptor for Precious Gold, Platinum, or Palladium Coordination Complexes

“…The supramolecular recognition strategy described here is a new way to reversibly encapsulate precious metal coordination complexes under mild conditions. , The simple macrocyclic structure is readily amenable to modifications that enable operation in different solvents (especially water) or on the surface of solid supports. In addition to separation processes for precious metal mining, recycling, − or water purification, , these new receptors will likely be useful for many other applications that involve precious metals, such as high-sensitivity detection, catalysis and process chemistry, , magnetic materials, nanoparticle fabrication, and drug delivery. , Studies are ongoing, and the results will be reported in due course.…”