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.

AN246: Determination of Diethylene Glycol in a Sorbitol Solution

Instrument Type: IC

Glycerin, sorbitol, and propylene glycol (PG) are widely used in pharmaceuticals and personal care products. These products are at risk from adulteration by similar, less costly, and very toxic compounds (ethylene glycol (EG) and diethylene glycol (DG)). The United States Pharmacopeia (USP) as directed by the US FDA revised USP 32 NF 26–27 monographs to identify and quantify EG and DEG in PG, sorbitol, and glycerin solutions. Here DEG in sorbitol solution is determined by IC-PAD with Pt working electrode. An ICS-6000 can be used for this application.

Determination of N-Methylpyrrolidine in Cefepime Using a Reagent-Free Ion Chromatography System

Instrument Type: IC

This application describes a cation-exchange chromatography method for the determination of N-methylpyrrolidine (NMP) in Cefepime using the Thermo Scientific Dionex IonPac CS17 column and suppressed conductivity detection.