AN184: Determination of Trace Concentrations of Chlorite, Bromate, and Chlorate in Bottled Natural Mineral Waters.(Method B)

Instrument Type: IC

In this application note, we compare the Dionex IonPac AS19 using an electrolytically generated hydroxide eluent to the AS23 column using an electrolytically generated carbonate/bicarbonate eluent for the determination of chlorite, bromate, and chlorate in natural mineral waters. We compare the linearity, method detection limits, precisions, and recovery for three mineral waters obtained from three European countries to determine whether these columns have the sensitivity required to meet current EPA and EU requirements. This record describes the IonPac AS23 method.

AN208: Determination of Bromate in Bottled Mineral Water Using the CRD 300 Carbonate Removal Device

Instrument Type: IC

This application note describes the use of the Thermo Scientific Dionex CRD 300 Carbonate Removal Device to remove the majority of carbonate from the eluent and allow hydroxide-like performance and detection sensitivity. This device was used with the Dionex IonPac AS23 to determine bromate in bottled mineral water samples. Detection sensitivity when using the Dionex CRD 300 Carbonate Removal Device was improved compared to chromatography without the Dionex CRD 300 device.