Matches in SemOpenAlex for { <https://semopenalex.org/work/W158613147> ?p ?o ?g. }
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- W158613147 abstract "Publisher Summary In the initial work on solid-phase microextraction (SPME), sections of fused silica optical fibers, both uncoated and coated with liquid and solid polymeric phases, were dipped into an aqueous sample containing test analytes and then placed in a GC injector. The early experiments provided very important preliminary data that confirmed the usefulness of this simple approach because both polar and non-polar chemical species were extracted rapidly and reproducibly from aqueous samples. The development of the technique accelerated rapidly with the implementation of coated fibers incorporated into a microsyringe, resulting in the first SPME device. Sample injection is performed in a manner similar to standard syringe injection. Movement of the plunger allows exposure of the fiber during extraction and desorption, and fiber protection in the needle during storage and penetration of the septum. Another simple SPME construction is based on a piece of internally coated tubing. This tubing can be mounted inside a needle or it can constitute the “needle” of a syringe itself. A coated tubing approach is useful in the design of passive sampling devices discussed later, because in this case, the extraction rate is limited by the diffusion of analytes into the needle. A better understanding of SPME theory allows the design of devices that offer improved extraction efficiency. In addition to liquid polymeric coatings, such as polydimethylsiloxane (PDMS), for general applications, other more specialized materials have been developed for use as SPME coatings. There are several methods of depositing coatings onto fibers: dipping technique, electrodeposition, hollow fiber membranes/adhesive tape, adhesion of coatings, conducting polymers, and sol-gel coatings." @default.
- W158613147 created "2016-06-24" @default.
- W158613147 creator A5045312004 @default.
- W158613147 date "2012-01-01" @default.
- W158613147 modified "2023-09-26" @default.
- W158613147 title "Development of SPME Devices and Coatings" @default.
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