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Abstract
In recent years, the authors studied, by means of ion chromatography, different drinking, surface and rain waters for their inorganic ingredients such as chloride, fluoride, nitrate, phosphate and sulphate. The results of measurements in drinking water samples from the entire territory of the Federal Republic of Germany exceeded limiting values especially in the cases of nitrate and sulphate. Determination of the anionic composition of various surface waters sampled in the Federal Republic revealed a considerable variation of the individual parameters. Measurements in rain water exhibited seasonal variations. The potential for a determination of organic compounds in water has been examined for carboxylic acids as an example.