Detection of polycyclic aromatic hydrocarbons using thin-layer chromatography

1 Detection of polycyclic aromatic hydrocarbons using thin-layer chromatography 

The extract is dried with sodium sulphate, then transferred to a 100 ml conical flask (brown glass) and concentrated to approx. 1 to 2 ml in the rotary vaporizer. The resulting solution can be transferred into a smaller conical flask and further concentrated. 

With ground water and drinking water, preparatory cleaning is only necessary in rare cases, but with waste water and seepage water it is essential. 

The following procedure has given good results for cleaning and recovery  

1 g Florisil (magnesium silicate) is put into a small 1.6-cm diam. brown glass column approx. 10 cm long. Cyclohexane is added for preliminary 

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