Abstract

A method for trace analysis of free aromatic amines of special interest in relation to the rubber industry is presented. It involves separation of the amines by high temperature glass capillary gas chromatography on an OV-73 stationary phase, using on-column injection and nitrogen-selective detection. The necessary inertness of the column was achieved by deactivation with octamethylcyclotetrasiloxane. Linear calibration plots were obtained over the range 50–1600 pg and detection limits in the range 10–20 pg.

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