Sample Preparation Perspectives

Conventional extraction technologies. . 59 from polymer/additive  

1 Supercritical fluid technology. . . 81 3.5.2 Solid-phase microextraction. 129 

Additives In Polymers Industrial Analysis And Applications J. C. J. Bart 2005 John Wiley Sons, Ltd ISBN 0-470-85062-0 

Analytical techniques for the quantitative determination of additives in polymers generally fall into two classes indirect (or destructive) and direct (or nondestructive). Destructive methods require an irreversible alteration to the sample so that the additive can be removed from the plastic material for subsequent detention. This chapter separates the additive wheat from the polymer chaff , and deals with sample preparation techniques for indirect analysis. 

In general, new sample preparation technologies are faster, more efficient and cost effective than traditional sample preparation techniques. They are also safer, more easily automated, use smaller amounts of sample and less organic solvent, provide better target analyte recovery with enhanced precision and accuracy. Attention to the sample preparation steps has also become an important consideration in reducing contamination. A useful general guide to sample preparation has been published [3]. A recent review on sample preparation methods for polymer/additive analysis is also available [4]. 

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