Bromide, fluoride, chloride, nitrite, nitrate, sulphate, phosphate and ammonium

1 Bromide, fluoride, chloride, nitrite, nitrate, sulphate, phosphate and ammonium 

Smee et al. [40] used ion chromatography has been used for the measurement of backgroimd concentrations of fluoride, chloride, nitrate and sulphate in non saline waters. 

Shown in Fig. 2.8 is a schematic diagram of the Dionex ion exchange liquid chromatograph used by Smee et al. [40]. The instrumentation consists essentially of a low capacity anion exchange column, the separator, a high capacity cation exchange column, the suppressor and ttie detection system, a high sensitivity conductivity meter and recorder. 

Source Reproduced with permission from Elsevier Science, UK [40] 

Following the injection of a small volume (lOOpL) of sample, rapid exchange and separation of the anions is accomplished with a specially prepared low capacity resin (containing quaternary ammonium exchange sites existing as a thin film on the surface to facilitate fast equilibrium). 

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