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Linearity of response and sensitivity (i.e., gradient of the calibration curve) were selected as performance parameters for the comparison of six GC–MS methods that result from all possible combinations of the two ionization (electron ionization, EI, and negative chemical ionization, NCI) and the three mass scanning techniques (full scan, selective ion monitoring and MS–MS). The study involved testing...
Stir bar sorptive extraction (SBSE) is a microextraction technique, introduced to overcome the problem of limited extraction capacity and fragile fiber coatings inherent in the solid phase microextraction technique. The major limitations of the SBSE technique are that only polydimethylsiloxane has been commercially available, this reduces its use to non-polar analytes, and its tedious reconstitution...
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