SLE

PLE

Soxhlet

Compounds

Suitable for all tested OCPs and PCBs

Suitable for all tested OCPs and PCBs

Only suitable for thermolabile analytes in combination with labelled internal standards

Complexity of technique

Easy extraction principle, washing step potentially problematic

Trained personnel necessary, washing step uncomplicated

Trained personnel necessary, washing step uncomplicated

Amount of solvent per sample

150 ml

22 ml (PLE)

100 ml (Sox)

Time consumption (without clean-up)

~1.5 h

~0.5 h/sample

min. ~6 h (Sox)