“…The approach taken in these studies was to use sieved, activated carbon (Amoco PX-21) dispersed with Ci8. [AX-21 (Anderson Development Co.) is more widely available than PX-21 and has been shown to have similar chromatographic properties(27,28].} Octadecylsilane is a sorbent whose properties lend itself to use as a dispersant due to its rapid equilibration to new solvent conditions, rigid particles that withstand HPLC back-pressure, and essential nonselectivity and nonadsorptivity with the solvents used for elution of PCBs and PCDDs/PCDFs from carbon.…”