Journal ArticleDOI
Dynamics of organic compound extraction from water using liquid-coated fused silica fibers
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TLDR
In this paper, the absorption and desorption processes of benzene, toluene, and p-xylene were described and compared with experimental results for solid-phase microextraction using poly(dimethylsiloxane)-coated fused silica optical fibers.Abstract:
Mathematical descriptions of the absorption and desorption processes were developed and compared with experimental results for solid-phase microextraction (SPME) using poly(dimethylsiloxane)-coated fused silica optical fibers. Extraction times for benzene, toluene, and p-xylene using a coating thickness of 55 {mu}m are under 10 min and can be shortened substantially using agitation. Detection limits and distribution coefficients for several organic compounds are presented. 20 refs., 13 figs., 1 tab.read more
Citations
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Conjugated polymer-based chemical sensors.
TL;DR: When considering new sensory technologies one should look to nature for guidance, as living organisms have developed the ultimate chemical sensors.
Journal ArticleDOI
Headspace solid-phase microextraction
Zhouyao Zhang,Janusz Pawliszyn +1 more
TL;DR: In this article, a modification of the solid-phase microextraction method (SPME) is proposed to shortens the time of extraction and facilitates the application of this method to analysis of solid samples.
Journal ArticleDOI
Evolution of solid-phase microextraction technology
Heather L. Lord,Janusz Pawliszyn +1 more
TL;DR: The main objective of this contribution is to describe the development of the concepts, techniques and devices associated with solid-phase microextraction as a response to the evolution of understanding of the fundamental principles behind this technique.
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Solid-Phase Microextraction. A Solvent-Free Alternative for Sample Preparation
Journal ArticleDOI
Automation and optimization of solid-phase microextraction
TL;DR: The solid phase microextraction (SPME) technique as mentioned in this paper involves exposing a fused silica fiber that has been coated with a stationary phase to and aqueous solution containing organic contaminants.
References
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Journal ArticleDOI
Solid phase microextraction with thermal desorption using fused silica optical fibers
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Electrochemistry of conducting polypyrrole films
TL;DR: In this paper, the same authors showed that polypyrrole, poly-N-methylpyrron and poly-phenyl pyrrole polymers can be electrochemically driven between the oxidized (conducting) form and the neutral (insulating) form.
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Immobilization of glucose oxidase in ferrocene-modified pyrrole polymers
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Protein-modified electrodes. The glucose oxidase/polypyrrole system
Mirtha. Umana,Jess. Waller +1 more
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Enzyme entrapment in electrically conducting polymers. Immobilisation of glucose oxidase in polypyrrole and its application in amperometric glucose sensors
TL;DR: A technique is described for the entrapment of glucose oxidase in a polypyrrole matrix electrochemically deposited on a printed platinum electrode, with the enzyme activity incorporated into the polymer found to be proportional to the activity in the electropolymerisation medium.