[en] Complete text of publication follows. Continuous extraction device was used to follow the evolution of Cr(VI) enrichment with Aliquat 336 (trioctyl methyl ammonium chloride) in time. Only chloroform which ensures the needed difference in density was used in order to have a proper run of the extraction instrument. The extraction process was followed with a flame atomic absorption spectrometer (FAAS). The chromium content of the organic phase was measured with GFAAS method. A mixing vessel, volume 7,5 mL is connected with a reservoir of sample solution by a glass capillary. In the bottom of the mixing vessel there is 2 mL organic phase, chloroform in which complex forming agent is solved. A magnetic stirrer disintegrates the chloroform into small droplets. The sample is continuously sucked through this mixed phase into the flame of FAAS instrument. Using 100 mL of dichromate containing solution in the extraction device and 2 mL Aliquat 336 solution in chloroform for extraction we obtain a 50-fold enrichment. After this extraction the chromium content of the organic phase was determined with GFAAS method. The limit of detection of GFAAS for chromium was improved to 1 ng/L (1 ppt). This method is generally useful for planning continuous extractions, establishing the metal/complexing agent ratio and effective enrichment of elements in ultra trace level. The single drop microextraction was modified so, that instead of hanging 3-4 μL droplet a 30 μL drop was placed to the bottom of a flowing microvessel to stabilize the continuous extraction and for accurate pipetting the drop to the graphite tube of GFAAS instrument. After optimization of this method the performance was compared to conventional and the continuous liquid-liquid extractions.