Please use this identifier to cite or link to this item:
https://scholarbank.nus.edu.sg/handle/10635/47542
DC Field | Value | |
---|---|---|
dc.title | DEVELOPMENT AND APPLICATION OF MINIATURIZED SAMPLE PREPARATION TECHNIQUES COMBINED WITH GAS CHROMATOGRAPHY-MASS SPECTROMETRY IN ENVIRONMENTAL ANALYSIS | |
dc.contributor.author | ZHANG HONG | |
dc.date.accessioned | 2013-11-09T18:01:30Z | |
dc.date.available | 2013-11-09T18:01:30Z | |
dc.date.issued | 2011-09-22 | |
dc.identifier.citation | ZHANG HONG (2011-09-22). DEVELOPMENT AND APPLICATION OF MINIATURIZED SAMPLE PREPARATION TECHNIQUES COMBINED WITH GAS CHROMATOGRAPHY-MASS SPECTROMETRY IN ENVIRONMENTAL ANALYSIS. ScholarBank@NUS Repository. | |
dc.identifier.uri | http://scholarbank.nus.edu.sg/handle/10635/47542 | |
dc.description.abstract | This dissertation presents the development and application of miniaturized sample preparation techniques for environmental analysis. For sorbent-based microextraction, the applicability and feasibility of graphene or modified graphene as sorbent was investigated and evaluated. The possibility of graphene serving as sorbent was first explored in micro-solid-phase extraction. To further investigate its extraction capability, well-dispersed graphene was applied in a variation of solid-phase microextraction (SPME), which was assembled with a commercially-available plunger-in-needle microsyringe, in which the plunger was coated with graphene. With this setup, a ready-made SPME device resembling a commercial system, was conveniently devised. A liquid-phase microextraction (LPME) approach was developed: plunger-in-needle LPME, based on similar concept as plunger-in-needle SPME. A hydrofluoric acid-etched stainless steel plunger was used as organic solvent holder and support. The aforementioned miniaturized and environmentally friendly sample preparation methods were demonstrated to be simple, fast and cost-effective for the analysis of organic pollutants from environmental aqueous samples. | |
dc.language.iso | en | |
dc.subject | Gas chromatography-mass spectrometry, Microextraction, Solid-phase, Liquid-phase, Graphene, Plunger-in-needle | |
dc.type | Thesis | |
dc.contributor.department | CHEMISTRY | |
dc.contributor.supervisor | LEE HIAN KEE | |
dc.description.degree | Ph.D | |
dc.description.degreeconferred | DOCTOR OF PHILOSOPHY | |
dc.identifier.isiut | NOT_IN_WOS | |
Appears in Collections: | Ph.D Theses (Open) |
Show simple item record
Files in This Item:
File | Description | Size | Format | Access Settings | Version | |
---|---|---|---|---|---|---|
ZhangH.pdf | 11.94 MB | Adobe PDF | OPEN | None | View/Download |
Google ScholarTM
Check
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.