The standard method decribes the detection of the so-called Hydrocarbon Oil Index in water samples. Excepted are mineral and drinking water, which are regulated by the German Drinking Water Ordonance (TV0)
The previous standard H18 has been replaced by the new method (H53), because a CFC had been necessary as extracting agent. The basic principle of the method is now the extraction of the water sample with e.g. petroleum ether (boiling point 40-60° C) or n-hexane, rinsing with Florisil columns, concentration of the extract, measurement at GC-FID and evaluation by the integration of the areas between the hydrocarbons C10 and C40.
The manual handling of the whole analysis, as e.g. the production and cleaning of the Florisil columns, the according Florisil suitability tests and the concentration of the rinsed extract are laborious and time-consuming.
That is why LCTech offers useful tools for this method:
