Multicapillary column isothermal gas chromatography with element-selec
tive detection has been shown to allow the ultra-rapid ( < 30 s instea
d of about 10 min) analysis of non-polar compounds with boiling-points
of 200-300 degrees C, without sacrificing the resolution and efficien
cy of conventional capillary GC with oven temperature gradient program
ming. An example of speciation analysis for butyltin compounds in a PA
CS-1 certified reference sediment is shown.