On-line coupled extraction and separation using superheated water for the analysis of the triazine herbicides

Superheated water extraction (SWE) has been coupled on-line with superheated water chromatography (SWC) via a solid phase trap. The extraction, trapping, release from the trap and chromatography are all controlled by altering the temperature and no organic solvents are required at any stage of the process. Cold and warm wash aqueous steps were included to remove humic acids and other interfering components of the compost samples.