ABSTRACT
Sample preparation for the determination of multiresidue pesticides involves a wide scope of techniques. Despite that some methods are the most used and accepted in the field, the development of other techniques remains a contribution at analytical level. Solid phase micro-extraction (SPME) is an important tool to prepare samples both in the laboratory and on-site. This technique is a "green" technology because it eliminates organic solvents from the analytical laboratory and can be used besides multiresidue methods for pesticide trace analysis in foods, in environmental, fragrance, and forensic and drug analysis. The most widely used form of SPME sampling consists of exposing a thin polymeric coating directly to the sample matrix for a predetermined amount of time. The principal advantage of SPME is that it is a solventless sample preparation technique. Another advantage is that it is prone to automation.
