The Analytical Chemistry Springboard
Description of the microdialysis technique for sampling low molecular weight weight substances from living tissue. Also available are year-wise text (zipped) files of bibliographical citations in medline format. This site also maintains and takes subscriptions to a Microdialysis List for informal discussion of the technique.
- Membrane Extraction with a Sorbent Interface
A new concept, membrane extraction with a sorbent interface (MESI), has been developed to allow rapid routine analysis and long-term on-line continuous monitoring of volatile organic compounds (VOCs) in various environmental or industrial matrices. This is a short tutorial by the inventor, Janus Pawliszyn.
- Sample Preparation for a Mobile GC-MS System
For fast emergency response by mobile GC/MS seven different standard procedures have been developed to analyze volatile and semivolatile organic compounds in air, water, soil or on surfaces. "Skilled fire fighters instead of analytical chemists should be able to operate the system".
- SamplePrep Web
This site at Duquesne University, which was formerly termed PrepNet, is a good starting point for information and advice regarding analytical sample preparation, speciated analysis, trace analysis and microwave chemistry. We can only congratulate the people maintaing this site for abandoning their previous closed "membership" policy with password protection.
- Solid Phase Microextraction
SPME involves exposing a fused silica fibre that has been coated with a non-volatile polymeric liquid to a sample or its headspace. The absorbed analytes are thermally desorbed in the injector of a gas chromatograph (GC) or GC-mass spectrometer for separation and quantitation. A slide presentation by Janus Pawliszyn.
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Knut Irgum, Analytical Chemistry, Umeå University, S-901 87 Umeå, Sweden.
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