Within each category, di¤erent techniques may have their own restrictions,
requirements, and concerns. As the analytical instruments become more sophisticated, robust, and user friendly, some stringency of samplespecifications can be relaxed, but those fundamental to the analytical process
remain. In this chapter, we provide a brief introduction to those sample
preparation concerns that every user should be aware of. Tables 9.1 and 9.2
provide a brief summary of the analytical techniques whose sample preparation
concerns are covered in this chapter.