Analysis of air samples by ion chromatography.

Partition/Ion-Exclusion Chromatographic Ion Stacking for the Analysis of Trace Anions in Water and Salt Samples by Ion Chromatography.

A new analytical methodology for a simple and efficient on-line preconcentration of trace inorganic anions in water and salt samples prior to ion chromatographic determination is proposed. The preconcentration method is based on partition/ion-exclusion chromatographic ion stacking (PIEC ion stacking) with a hydrophilic polymer gel column containing a small amount of fixed anionic charges. The d...

Analysis of carbonic acid in water samples by ion-exclusion chromatography with pure water as eluent.

A simple, sensitive and rapid ion-exclusion chromatographic method for the simultaneous separation of carbonic acid and short chain organic acids (formic acid, acetic acid, and propionic acid) has been developed. A weakly acidic cation exchange resin column TSKgel OApak-A was used for the separation; pure water, owing to its lower background conductance, was employed as eluent in order to obtai...

Analysis of High Pressure Samples by Gas Chromatography

High molecular weight compounds dissolved in gases at elevated pressures and temperatures in reservoirs often present production problems. These can range ftom precipitation of solids which foul chillers and tubing to plasticizing membranes used for gas component separations. Quantitative analysis of such samples is problematic because they are frequently present in sample vessels as two phases...

Ion Chromatography in Environmental Analysis

The Analysis of Perchlorate by Ion Chromatography/Mass Spectrometry Application

A method for the determination of perchlorate anion at sub ppb levels using ion chromatography/mass spectrometry (IC/MS) is described. The IC/MS method follows EPA Method 314 methodology originally developed for IC with conductivity detection at the single ppb range [1]. The IC/MS method is not affected by the addition of the interference matrix described in Method 314 on perchlorate recoveries...