The applicability of solid-phase microextraction (SPME) for the analys
is of semi-volatile compounds in water was verified by an interlaborat
ory study on pesticide analysis by SPME, Eleven laboratories in Europe
and North America took part in the test. No previous experience with
SPME was required, The test sample contained 12 pesticides representin
g all main groups (organochlorine, organonitrogen and organophosphate)
at low ppb levels, The results of the test proved that SPME is an acc
urate and fast method of sample preparation and analysis, It can be an
excellent alternative to currently used methods.