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Gas chromatographic determination of aromatic amines in water samples after solid-phase extraction and derivatization with iodine: I. Derivatization |
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| Authors: | Torsten C. Schmidt, Melanie Less, Rainer Haas, Eberhard von L w, Klaus Steinbach,Gottfried Stork |
| Affiliation: | a Department of Chemistry, Philipps-University, Hans-Meerwein-Strasse, D-35032 Marburg, Germany b Environmental Hygiene and Immunology, Medical Centre of Hygiene, Philipps-University, Pilgrimstein 2, D-35037 Marburg, Germany c Bureau for Exploration of Hazardous Waste Sites and Pollution Research, Stadtwaldstrasse 45a, D-35037 Marburg, Germany |
| Abstract: | A new method for the selective determination of aromatic amines is presented, which is based on the solid-phase extraction at pH 9 and subsequent derivatization of the analytes to the corresponding iodobenzenes. These can selectively and sensitively be determined with gas chromatography and electron-capture detection. Separation of at least 30 compounds in a single chromatographic run in 30 min is possible. With this method, 56 aromatic amines were investigated, and only in six cases no derivatives were obtained. Limits of quantitation were between 0.5 and 8 μg l−1, but may still be lowered with higher sample volumes or different injection techniques. The application to water samples revealed the suitability for the investigation of ground, leachate and wastewater. |
| Keywords: | Amines, aromatic Iodine |
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