This application note describes the method development of an on-line automated solution for Polycyclic Aromatic Hydrocarbons (PAHs). Development was in conjunction with Paul Leather, Environment Agency in July-Aug 2016. This method uses an automated liquid-liquid extraction (LLE) using the GERSTEL Agitator.
The PAHs are non-polar, hydrophobic compounds that do not ionise so are extracted well into organic solvents.
The original method is a LLE using 1000mL of sample extracting into 5mL cyclohexane. The automated method created was scaled down to use a 20mL vial, with 18mL of sample and 500µL solvent.
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Initial Work for Automation of Polycyclic Aromatic Hydrocarbons in Water