METHOD FOR DETERMINING RESIDUES IN PLASTICS

• Main Authors: FINCH, ADAM, DOEHNERT, DETLEF, ABDEL-BAKY, SAMY, JONES, JAY
• Format: Patent
• Language: English; French
• Published: 30.11.2006
• Subjects: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MAKING GRANULES OR PREFORMS; MEASURING; PERFORMING OPERATIONS; PHYSICS; POSTAL SORTING; PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS; SEPARATING SOLIDS FROM SOLIDS; SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTEDPIECE-MEAL, e.g. BY PICKING; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TESTING; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

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.