Ion chromatographic determination of major ions in fog samples

Ion chromatographic determination of chloride in mustard sauces

A new, simple, precise, and rapid ion chromatography (IC) method has been developed to determine chloride in mustard sauces using a mixture of phthalic acid, acetone, and water adjusted to pH 5.0 as eluent. Conductometric detection was carried out. The retention time for chloride was 1.5 min. Linearity was obtained up to a concentration level of 100 mg/L NaCl. The method was statistically evaluated for accuracy and precision after being used to assay the chloride from mustard sauces. Within the same samples, the chloride levels obtained by IC were compared with the sodium concentrations quantified by atomic absorption spectrophotometry.

Applications of anion chromatography in terrestrial environmental research

Ion chromatography can be applied to characterise single samples for a wide range of ionic species, at elevated or trace concentrations, or with automation may be used to determine many of the common ions on several thousand samples per year. It has been applied to a wide range of sample types of environmental interest. Examples of applications are given for the common sample types, i.e. atmospheric gases and particulates, water, biological materials and soil. The recent literature in the field of anion chromatography, as applied to environmental research, is reviewed (102 references). Suppressed and non-suppressed systems are covered, as are comparisons with other methods of analysis. Development of sample preparation methods, stationary and mobile phases, detection systems and techniques are also discussed.