%0 Journal Article %T Solid‐phase microextraction: a powerful sample preparation tool prior to mass spectrometric analysis %A Vas, György %A Vékey, Károly %J Journal of Mass Spectrometry (Incorp Biological Mass Spectrometry) %V 39 %N 3 %P 233-254 %@ 1076-5174 %D 2004-03-01 %I Wiley Subscription Services, Inc., A Wiley Company %~ DeepDyve