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Comparison of Three Different Poly(dimethylsiloxane)–divinylbenzene Fibres for the Analysis of Pesticide Multiresidues in Water Samples: Structure and Efficiency by C Gonçalves; M.F Alpendurada is a Chemistry article available to read on EtoBox.
What is Comparison of Three Different Poly(dimethylsiloxane)–divinylbenzene Fibres for the Analysis of Pesticide Multiresidues in Water Samples: Structure and Efficiency about?
Despite the continuing development of SPME (solid-phase microextraction) fibre coatings, their selection presents some difficulties for analysts in choosing the appropriate fibre for a certain application. There are two distinct types of SPME coatings available commercially. The most widely used are poly(dimethylsiloxane) (PDMS) and poly(acrylate) (PA). Supelco has developed new mixed phases consisting of porous polymer particles, either poly(divinylbenzene) (DVB) or Carboxen suspended in a matrix of PDMS or Carbowax for extracting analytes via adsorption. In addition to the nature of the extracting phase, the thickness of the polymeric film must be taken into account and, surprisingly, the construction of the fibres when apparently they bear the same coating, as it is the case of the three PDMS-DVB fibres available. Other fibre structure properties not well explored were identified and must be taken into consideration. To elucidate their extraction efficiency, three PDMS-DVB fibres, namely 60 microm for HPLC use, 65 microm for GC use and 65 microm StableFlex for GC use, were compared with regard to the extraction of 36 compounds included in four pesticide groups. The first was par
Who reads Comparison of Three Different Poly(dimethylsiloxane)–divinylbenzene Fibres for the Analysis of Pesticide Multiresidues in Water Samples: Structure and Efficiency?
It is typically read by researchers, students, and practitioners in Chemistry.
- Author
- C Gonçalves; M.F Alpendurada
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 1873-3778)
- Published
- 2002
- Language
- EN
- Field
- Chemistry (Physical Sciences)