US EPA

5065894 

Journal Article 

Headspace solid-phase microextraction 

Zhang, Z; Pawliszyn, J 

1993 

Yes 

Analytical Chemistry
ISSN: 0003-2700
EISSN: 1520-6882 

65 

14 

1843-1852 

English 

10.1021/ac00062a008 

WOS:A1993LM74800008 

https://www.scopus.com/inward/record.uri?eid=2-s2.0-10944254274&doi=10.1021%2fac00062a008&partnerID=40&md5=a804d49c5d750e38815308f3ef8f856f
Exit
 

BIOSIS COPYRIGHT: BIOL ABS. Headspace solid-phase microextraction is a solvent-free sample preparation technique in which a fused silica fiber coated with polymeric organic liquid is introduced into the headspace above the sample. The volatilized organic analytes are extracted and concentrated in the coating and then transferred to the analytical instrument for desorption and analysis. This modification of the solid-phase microextraction method (SPME) shortens the time of extraction and facilitates the application of this method to analysis of solid samples. The detection limits of the headspace SPME technique are ap ppt level when ion trap mass spectrometry is used as the detector and are very similar to that of the direct SPME technique. A simple one-dimensional kinetic model has been developed to study the diffusion process involved in headspace SPME. The results from theoretical modeling are consistent with the experimental data. In the experiments, a group of organic compounds, benzene, tolue