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Abstract
Pesticides are very important in increasing the efficiency and quality of agricultural production. They are applied in many spheres of life, not only in agriculture, and their applications are expanding. Despite their numerous merits, pesticides are some of the most toxic substances contaminating our environment and have a negative impact on the human health. Properties of pesticides such as stability, ability to bioaccumulation and toxicity cause risk of diseases and poisoning the consumers of the food. The presence of pesticides in food products is treated as chemical pollution and are covered by law regulations, which control and regulate the permissible levels of concentration of these compounds (Maximum Residue Levels - MRLs). The determination of pesticide residues in food matrices is a challenge because of very low concentration levels of analytes and large amounts of interfering substances which can be co-extracted with analytes, and adversely affect to the results of analysis. In the sample preparation process many different extraction techniques are used, which are still modified. During the extraction and/or enrichment step, concentration levels of analytes are increased to the point where they can be determined. At the same time, the transfer of analytes from the primary matrix to the secondary one removes interferents. In this paper the most popular extraction techniques for determination of pesticides residues in food samples are presented. The advantages and drawbacks of these techniques are also discussed.
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- Category:
- Monographic publication
- Type:
- rozdział, artykuł w książce - dziele zbiorowym /podręczniku w języku o zasięgu międzynarodowym
- Title of issue:
- ''Advances in chemical and mechanical engineering''. - Vol. II/II strony 261 - 265
- Language:
- English
- Publication year:
- 2012
- Bibliographic description:
- Szynwelska J., Tankiewicz M., Stocka J.: Sample preparation techniques for determination of pesticide residues in food samples// ''Advances in chemical and mechanical engineering''. - Vol. II/II/ ed. eds. C. Fijało, P. Fijało. - Gdańsk University of Technology. Gdańsk: GUT, 2012, s.261-265
- Verified by:
- Gdańsk University of Technology
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