Chelating polymers and related supports for separation and preconcentration of trace metals.

Selective pre-concentration and solid phase extraction of mercury(II) from natural water by silica gel-loaded dithizone phases.

Hydrazones as analytical reagents: a review.

Conventional metallurgical processing of precious metals involves the use of large amounts of toxic chemicals. Realizing a need to develop environmentally benign metallurgical technology for precious metals, we prepared two types of adsorption gels, containing primary amine and ethylenediamine functional groups and abbreviated as PA−lignin and EN−lignin, respectively, from wood powder. Both of these adsorption gels were found to be effective for the adsorption of Au(III), Pd(II), and Pt(IV) from weak to strong hydrochloric acid media. In contrast, base metals such as Cu(II), Fe(III), Ni(II), and Zn(II) were almost not adsorbed on either gel. The above-mentioned precious metals were adsorbed on the gels according to the Langmuir adsorption model, and the highest maximum adsorption capacity was observed for Au(III). The formation of ion pairs of metal−chloro complex anions and protonated adsorption gels in acidic media was proposed to be the main adsorption process. However, in the case of Au(III) adsorptio...

Recovery of Gold(III), Palladium(II), and Platinum(IV) by Aminated Lignin Derivatives

Ion-exchange method for separation and concentration of platinum and palladium for analysis of environmental samples by inductively coupled plasma atomic emission spectrometry

Ion-exchange resins containing s-bonded dithizone and dehydrodithizone as functional groups : Part 2. Desoprtion properties and development of separation procedures for gold and platinum group metals

Ion-exchange resins containing s-bonded dithizone and dehydrodithizone as functional groups : Part 3. Determination of Gold, Platinum and Palladium in Geological Samples by means of a Dehydrodithizone Resin and Plasma Emission Spectrometry

A. Kettrup

Papers

Ion-exchange resins containing s-bonded dithizone and dehydrodithizone as functional groups : Part 2. Desoprtion properties and development of separation procedures for gold and platinum group metals

Ion-exchange resins containing s-bonded dithizone and dehydrodithizone as functional groups : Part 3. Determination of Gold, Platinum and Palladium in Geological Samples by means of a Dehydrodithizone Resin and Plasma Emission Spectrometry

Spectrophotometric determination of rhenium with di(2-pyridyl)ketone-2-furancarbothiohydrazone and other thiohydrazones