A polymer-based solid-phase extraction procedure for determination of sulfonylurea herbicides and related compounds in environmental samples
SPE water method compatible with HPLC, CE, GC for a variety of
compounds. Soil method is innovative: soil extracted with aqueous
buffer, not organic solvent; extraction & cleanup in one step;
compatible with derivatization/GC, CE as well as HPLC--gives very
clean, colorless extract.