DEVELOPMENT OF A NEEDLE DEVICE FOR ON-LINE ELECTROEXTRACTION LIQUID CHROMATOGRAPHY

摘要

The development of a needle device enabling on-line electroextraction coupled to high-performance liquid chromatography in an autosampler is described. This electroextraction needle meets all the demands set to automated liquid handling and can fully replace the conventional autosampler needle. In addition, the system has been fully automated, and can be used as an interfacing technique between solid-phase extraction and liquid chromatography. A detailed description of the electroextraction needle hardware, as well as some typical examples of its use in on-line electroextraction-liquid chromatography are presented.