The method used a Thermo Scientific™ Dionex™ IonPac™ AS23-4μm column, a Thermo Scientific™ Dionex™ AERS™ 500 Carbonate anion electrolytically regenerated suppressor, and a Thermo Scientific™ Dionex™ CRD 300 Carbonate Removal Device in vacuum mode. This work demonstrates a similar method on a Thermo Scientific™ Dionex™ Inuvion™ ion chromatography system, a new integrated, single-channel compact IC system.
This study demonstrates the ability of the Thermo Scientific™ Dionex™ IonPac™ AS30 column to separate ethylenediamine (EDA) carbamate and fluoride as well as carbonate and sulfate in order to determine trace concentrations of oxyhalides and bromide in drinking water containing the EDA preservative.
Food safety and perceived health risks from residual agricultural chemicals are ongoing public concerns, and these chemicals are under increasing regulatory scrutiny, including polar pesticides. Much of the attention is focused on glyphosate because of its of wide use and association with crops and seeds genetically modified to tolerate glyphosate. In this application note, fast determination of multiple anionic pesticides and disinfection byproducts by IC-MS is demonstrated. All analytes of interest elute <14 min and were detected serially by suppressed conductivity and mass spectrometry.
Before running any samples, Thermo Scientific recommends that you first confirm the performance of the column by reproducing the lot validation report chromatogram shipped with column. Compare your results with the one reported in the quality assurance report (QAR). This record provides an eWorkflow for executing the QAR method on an Integrion HPIC system. Other ICS systems can be used for this application.
This study demonstrates that oxyhalides and bromide can be determined accurately in municipal drinking water and bottled water using a fast isocratic 15-min IC-MS method. The method provides an advantage over the traditional IC-CD method concerning sensitivity and selectivity, offering positive analyte-identification, particularly for complex samples.
