Abstract
AbstractA method for the chromatographic analysis of small amounts of phthalates in water was developed. The reaction conditions for the quantitative alkaline hydrolysis of phthalates in water samples to corresponding alcohols are described. The procedure enables us to determine water samples in concentrations of 0.045 … 45 mg/l of di‐i‐octyl phthalate. The final determination is carried out by the direct injection of otherwise unprepared hydrolytic products into the column of a steam‐solid chromatograph. The individual alcohols have been separated according to their boiling points (alcohols C4C9 are eluated under the five‐min retention time).The quantitative hydrolysis course was verified on the natural samples of ground water contaminated by ca. 10 thousand kg of di‐i‐octyl phthalate by a standard addition method. The accuracy of this determination was 97.5% (variation coefficient − cx = 1.5%).The stability of di‐i‐octyl phthalate in water at 20°C and various pH values were also tested.
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