To determine the fate and metabolism of organochemicals in agroecosystem, it is important to characterize and quantify the degradates in agricultural matrices.  However, it is usually challenging to extract all metabolites, especially those bound tightly to the matrices. To more accurately characterize the bound residues, numerous extraction techniques have been developed over the decades aiming to enhance the extractability from various matrices.  The extraction efficiency of several commonly used techniques, such as mechanical shaking, microwave-assisted extraction, accelerated solvent extraction (pressurized fluid extraction) and high frequency sonication are investigated.  The extractability of the 14C-labelled residues in soils, crop samples and animal tissues using different methods are compared side by side.  Main parameters that influence the performance of these extraction techniques are discussed. The throughput capability of different techniques is also evaluated.

Evaluation of extraction efficiency and throughput capability using different extraction techniques

248th National Meeting (2014)

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