The Gas-Chromatographic Determination of Aromatic Amines after Bromination in Surface Waters

Abstract

Abstract In this paper an analytical method is presented for the gas chromatographic determination of aniline, toluidines, monochloroanilines and dichloroanilines and their derivatives in surface water. After a combined alkaline hydrolysis and extraction with iso-octane of the water sample in a Bleidner apparatus, the aromatic amines in the iso-octane extract are brominated and determined with a gas chromatograph equipped with a capillary column with OV-330 and a electron capture detector. The minimum detectable amounts in surface water samples were in the 5-15ng1−1 range. In the river Rhine aniline, 2-, 3-and 4-monochloroaniline and 3, 4-dichloroaniline were frequently detected. In 1979 mean values respectively 3.0, 0.52, 0.15, 0.22 and 0.40 μg 1−1.