Supercritical fluid extraction of 14C-chlorsulfuron bound residues and their identification

Supercritical methanol was used to extract 14C-chlorsulfuron bound residues. When the SFE process was maintained for 30 minutes, 87.82% of total bound residues was found to be extracted. Whether the soil matrix was present or not, chlorsulfuron would be decomposed after the SFE process, and the decomposed products were then subjected to GC-MS analysis for identification. When the soil samples which contained only 14C-chlorsulfuron bound residues were processed by SFE, the released 14C-residues would be further decomposed