Passive sampling of ambient ozone by solid phase microextraction with on-fiber derivatization

Understanding Solid-Phase Microextraction: Key Factors Influencing the Extraction Process and Trends in Improving the Technique

“…Derivatization is carried out after the extraction proper, when the target analytes have already been adsorbed on the fiber (thus influencing the desorption and final determination only), or the derivatizing agent is brought to the fiber before extraction, in which case the analytes are converted at the same time as they are extracted. The simultaneous sampling of analytes from the medium and their on-fiber derivatization have been used in the analysis of environmental samples, , food samples, and biological samples, , whereas analyte conversion on the fiber after the actual extraction has been used for the analysis of biphenyls from urine samples, narcotics and steroids from samples of water and biological fluids, , and herbicides from water samples …”

Current trends in solid-phase microextraction (SPME) fibre coatings

“…Suitable reagent is introduced to the coating by placing the fiber in its vapours or in a suitable solution; this process may be carried out after completion of the extraction stage or in parallel. The latter approach has been utilized, i.a., in analyses of environmental samples 59,60 food samples 61 and biomedical applications. [62][63][64] The former approach (derivatization after completion of the extraction proper) was employed, i.a., in isolation of biphenyls from urea samples, 63 drugs and steroids from water and biological fluids, 65,66 or herbicides from water samples.…”

Integration of Headspace Solid Phase Micro-Extraction with Gas Chromatography for Quantitative Analysis of Formaldehyde

“…[16][17][18][19][20] Formaldehyde was collected by water reservoir (SPME-A) and air sampling directly from plywood specimens (SPME-W). For the SPME-A method, the AS of 10 mL was transferred into a 20 mL glass headspace vial.…”