Method for determining residues in plastics

G - Physics – 01 – N

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G01N 1/28 (2006.01) B07C 5/34 (2006.01) B29B 17/00 (2006.01)

Patent

CA 2609041

The present invention relates to a method for determining dangerous or pesticidal residues in plastics, which comprises processing a plastic sample to a fine powder, converting the powder into a form accessible for determining the analyte, and determining the analyte. The present invention is thus concerned with the analysis of plastics, in particular trace analysis of residues in plastics. The method advantageously allows the use of microextraction techniques and thus a high sample throughput. The method is especially useful for determining whether or not a plastic sample such as agricultural waste plastics contain pesticidal residues.

L'invention concerne un procédé pour la détermination de résidus dangereux ou de pesticides dans du plastique. Ce procédé consiste : à traiter un échantillon de plastique avec une poudre fine ; à convertir la poudre sous forme accessible en vue de déterminer la substance à analyser ; et à déterminer la substance à analyser. L'invention concerne ainsi l'analyse du plastique, en particulier l'analyse de résidus dans du plastique. De manière avantageuse, le procédé de l'invention permet d'utiliser des techniques de microextraction et ainsi de traiter des échantillons à un rendement élevé. Ledit procédé s'avère particulièrement utile pour déterminer si un échantillon de plastique de type plastique issu de déchets agricoles contient ou pas des résidus de pesticides.

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