Preparation and Application of Multiwalled Carbon Nanotubes Microspheres/Poly(ethylene glycol) Coated Fiber for SPME

Abstract:

In this context,the sol-gel approach to the preparation of solid-phase microextraction fibers is applied for extracting of benzene and mathanol from enviromental water samples.Therefore,two different substances such as PEG and MWCNTs is added to the coating.PEG/MWCNTs fibers are prepared using sol-gel technology as a process.MWCNTs is immobilized as microspheres in the pores of PEG coating using Scanning Electron Microscope(SEM).At last, the results show that PEG/MWCNTs fibers are higher extraction efficiency than PEG fibers. Several factors also are considered and optimized,such as extraction temperature, extraction time,inoic strength,stirring speed,desorption temperature and desorption time.LOD(S/N=5) and LOQ(S/N=10) for sol-gel PEG/MWCNTs fibers for extraction of benzene and methanol is 1µg/L and 2µg/L, linear range is 2-2800µg/mL and 2-3000µg/L, linear correlation coefficient is 0.9937 and 0.9940, the RSDs (RSD, n = 7) is 5.1%. and 6.7%, respectively.

• Periodical: Advanced Materials Research (Volumes 512-515)
• Pages: 2084-2087
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.512-515.2084
• Online since: May 2012
• Authors: Yong Jie Zheng, Dan Hui Wang, Jing Zhi Tian
• Keywords: Benzene, Methonal, Micro-Sphere, Multi-Walled Carbon Nanotube (MWCNT), PEG, SPME

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