Basic Information
Abstract Number: 1510-3    
Author Name: Janusz Pawliszyn Affiliation: University of Waterloo
Session Title: ACS Division of Analytical Chemistry Award for Young Investigators in Separation Science: Ionic Liquids in Microextraction and Separation Methods
Event Type: Award
Event Title: SPME: Quo Vadis
Presider(s): Olesik, Susan V Start Time: 09:20 AM ( Slot # 5 )
Date: Wednesday, March 14th, 2012 Location: 300
Keywords: Biomedical, Clinical Chemistry, Environmental, Medical

Abstract Content
In this presentation new developments in SPME and related techniques, such as cold fiber SPME, thin film SPME, needle trap, membrane extraction with sorbent interface and high throughput 96 well extractions coupled to LC will be summarized.
The ultimate goal of a chemist is to perform analysis at the place where a sample is located rather than moving the sample to laboratory, as is a commonly practiced in many cases at the present time. This approach eliminates errors and time associated with sample transport and storage and therefore it would result in more accurate, precise and faster analytical data. This approach is particularly important when living systems are investigated. In addition to portability, two other important features of ideal on-site sample preparation technique are elimination of solvent use and integration with a sampling step These requirements are met by techniques based on sorbent in needle and membrane technologies, which are presently under development in our laboratory. Fibre Solid Phase Microextraction (fibre-SPME) involves exposing a polymer coated fibre contained in a needle to a sample. The analytes partition into the coating until an equilibrium has been reached, after which the fibre is retracted into the needle and removed from the solution and the analytes are desorbed in the injector or an injection loop of an analytical instrument such as a gas or liquid chromatograph. Needle Trap (NT) involves drawing samples through sorbent bed contained in the needle. After sampling step is completed the trapped analytes are transferred to analytical instrument. In membrane extraction the membrane interface is placed directly incontact with the sample and the extraction occurs continuously. SPME, NT and membrane techniques integrate sampling with sample preparation and sample introduction to analytical instrument into a simple procedure.