TN25: Determination of Transition Metals in Complex Matrices by Chelation Ion Chromatography

Instrument Type: IC

This technical note describes chelation concentration, a selective concentration method, coupled directly to an ion chromatograph for the determination of transition metals in complex matrices. This method, Chelation Ion Chromatography, combines analyte concentration and matrix elimination with analytical separations and sensitive detection for transition and lanthanide metals. The result is a chromatographic technique that permits trace and ultratrace determination of metals in variety of sample matrices, especially those high in alkali and alkaline earth metals.

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.

AU165: Separation of Chromium (III) and Chromium (VI) by Ion Chromatography

Instrument Type: IC

This application update demonstrates separation and detection of Cr(III) and Cr(VI) using a Dionex IonPac CS5A column and absorbance detection. This method also describes a sample preparation technique that can be used to estimate the concentrations of Cr(III) and Cr(VI) in soil and wastewater samples.