碩士 / 國立中興大學 / 化學系所 / 104 / In this study, we have developed a new material ‘Graphene based acrylic resin composite sponge material’ as sold phase extraction sorbent material for the extraction of triazine herbicides in aqueous solution and determination by HPLC-UV. The adsorption capacity of acrylic resin material was enhanced by adding graphene nanosheets as fillers. This composite sponge material was prepared by mixing of graphene oxide, acrylic resin, cross-linking agents and foaming agents and then inflated with air to foam by Frother. And the foam material was heated at two stages to obtain Graphene/Acrylic resin based Composite Sponge Material.
In the extraction procedure, the sponge material was placed into the syringe and sample solution was aspirated into the syringe barrel for rapid adsorption/extraction. Then the adsorbed analytes were desorbed using organic solvent, and dried by nitrogen, then re-dissolved with 100 μL acetonitrile for HPLC-UV analysis. In order to obtain the best extraction efficiency, the parameters affecting the conditions including graphene content, the pH of sample solution, the salt addition and desorption solution were investigated thoroughly. Under the selected conditions, composite sponge materials were synthesized with 15 mg of graphene and 1 mL acrylic resin solution. 10 mL of aqueous solution (pH 7) was used for sample loading and followed with elution using 3 mL acetone. Under the optimal conditions, the limit of determination (LOD) and limit of quantitation (LOQ) for five triazine herbicides were between 0.3 ng/mL and 0.9 ng/mL. The relative standard deviations (RSD) were less than 3%. Recoveries were ranged between 82.8 % - 107 %. The total sample preparation steps were taken only 10 minutes. These results indicated that the Graphene/Acrylic resin Composite Sponge Material based solid phase extraction method is a rapid, sensitive, easy to handle and eco-friendly sample preparation method.
| Identifer | oai:union.ndltd.org:TW/104NCHU5065091 |
| Date | January 2016 |
| Creators | Yung-Hua Lin, 林詠樺 |
| Contributors | 鄭政峯 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 90 |
Page generated in 0.0017 seconds