Abstract
The miniaturization of the preconcentration methods is one of the fields of contemporary analytical chemistry. A new method of liquid-liquid microextraction preconcentration has been developed for the last 10–15 years; it is highly efficient, rapid, simple in implementation, and ecologically safe. The methodology and principles of the implementation of microextraction preconcentration are considered in the review. The accomplishments of the new preconcentration method in different fields of analytical chemistry are presented.
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