Method for enriching phthalate in air through graphene/ionic liquid composite material

• Main Author: LIN FULIANG
• Format: Patent
• Language: Chinese; English
• Published: 16.11.2016
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The present invention discloses a method for enriching phthalate in air through a graphene/ionic liquid composite material. According to the present invention, the material obtained by compounding graphene and a poly-1-allyl-3-ethylbenzimidazole hexafluorophosphate ion liquid is adopted as an adsorbent, phthalate in air is analyzed by a thermal desorption-gas chromatography-mass spectrometry combined detection means, and graphene oxide prepared by using a ball milling method is activated with CO2 to obtain the carbon material with characteristics of high specific surface and more pore channels so as to increase the enrichment efficiency; and the method has the following advantages that the use of a large number of the organic solvent is not required, the problems of solvent evaporation, cross-contamination and the like are avoided, the operation steps are simple, the selectivity on phthalate is good, the sensitivity is high, the adsorbent can be recycled, and the gas-state phthalate and the granular phthalate