Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/121772
Title: DEVELOPMENT OF MINIATURIZED EXTRACTION METHODS WITH ADVANCES OF NOVEL SORBENT MATERIALS FOR ENVIRONMENTAL ANALYSIS
Authors: HUANG ZHENZHEN
Keywords: Sample preparation, microextraction, sorbent, endocrine disrupting compounds, environmental analysis
Issue Date: 9-Feb-2015
Citation: HUANG ZHENZHEN (2015-02-09). DEVELOPMENT OF MINIATURIZED EXTRACTION METHODS WITH ADVANCES OF NOVEL SORBENT MATERIALS FOR ENVIRONMENTAL ANALYSIS. ScholarBank@NUS Repository.
Abstract: Sample preparation remains a critical component of the workflow for an analytical protocol. Featuring the reduction or complete elimination of solvents, and using small-scale devices, miniaturized extraction techniques have been considered a key trend in the analytical science field. This research work aimed at exploration of novel materials as the sorbent for the development of fast, simple and sensitive microextraction approaches for the detection of endocrine disrupting compounds, e.g., pesticides and estrogens. Two solid-phase based microextraction methods were reported, making use of one type of metal-organic framework, MIL-101. The first one explored MIL-101 in membrane protected micro-solid-phase extraction. The other one utilized surfactants to improve the extraction performance of MIL-101 toward analytes of moderate polarity. On the other hand, a new solid-phase microextraction device was fabricated with the advantages of bio-inspired polydopamine. Moreover, magnetic nanoparticles with polydopamine and carbonaceous shells were prepared and compared in magnetic solid-phase extraction. These extraction approaches demonstrated good efficiency and sensitivity in analysing environmental samples.
URI: http://scholarbank.nus.edu.sg/handle/10635/121772
Appears in Collections:Ph.D Theses (Open)

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