6Eisert R,Levsen K.Solid-phase microextraction coupled to gas chromatography:a new method for the analysis of organics in water.J Chromatogr,1996,733(1/2):143-157.
7Bartelt RJ.Caluibration of a commercial solid phase microextraction device for measuring headspace concentration of organic volatiles.Anal Chem,1997,69:363-372.
8Louch D,Mortldgh S,Pawliszyn J.Dynamics of organic compound extraction from water using liquid-coated fused silica fibers.Anal Chem,1992,64:1187-1199.