TN27: Determination of Lanthanide Metals in Digested Rock Samples by Chelation Ion Chromatography

Instrument Type: IC

A technique called chelation ion chromatography (chelation IC) was developed for the determination of transition and lanthanide metals in complex matrices. The sample pretreatment system (chelation concentration) coupled directly to the ion chromatograph offers the analyst a solution to the detection limit and interference problems commonly experienced when analyzing complex matrices.

TN23: Ion Chromatography of Lanthanide Metals (Part 3/3: Simultaneous Separation of Transition Metals and Lanthanide Metals)

Instrument Type: IC

A class separation of lanthanide metals from transition metals is achieved by taking advantage of the electroselectivity differences between transition metal complexes and lanthanide metal complexes. Transition metals form stable monovalent or divalent anionic complexes with PDCA, while lanthanide elements form stable trivalent anionic complexes with PDCA.

TN23: Ion Chromatography of Lanthanide Metals (Part 2/3: Anion Exchange Separation of Lanthanide Metals)

Instrument Type: IC

The separator column used for this method is the IonPac CS5.The separation is achieved using opposing linear gradients of a-hydroxyisobutyric acid (HIBA) oxalic acid and diglycolic acid.

TN23: Ion Chromatography of Lanthanide Metals (Part 1/3: Cation Exchange Separation of Lanthanide Metals)

Instrument Type: IC

In this technical note, methods are presented for the separation of lanthanides by both anion and anion exchange. Depending on the ratios of the lanthanide elements in a particular sample, either method may be preferred. An anion exchange method for separating transition metals from lanthanides is also presented. This record shows the cation-exchange method.