Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.chroma.2011.09.077
Title: Water stability of zeolite imidazolate framework 8 and application to porous membrane-protected micro-solid-phase extraction of polycyclic aromatic hydrocarbons from environmental water samples
Authors: Ge, D.
Lee, H.K. 
Keywords: Micro-solid-phase extraction
Polycyclic aromatic hydrocarbons
Zeolite imidazolate framework 8
Issue Date: 25-Nov-2011
Source: Ge, D., Lee, H.K. (2011-11-25). Water stability of zeolite imidazolate framework 8 and application to porous membrane-protected micro-solid-phase extraction of polycyclic aromatic hydrocarbons from environmental water samples. Journal of Chromatography A 1218 (47) : 8490-8495. ScholarBank@NUS Repository. https://doi.org/10.1016/j.chroma.2011.09.077
Abstract: Zeolite imidazolate framework 8 (ZIF-8) has permanent porosity, high surface area, hydrophobic property, open metal sites and remarkable water stability. These novel properties characterize the material as being different from other moisture sensitive metal-organic frameworks and endow ZIF-8 with the potential to extract trace analytes from environmental water samples. In the present study, ZIF-8 was synthesized and used as a sorbent for micro-solid-phase extraction of 6 polycyclic aromatic hydrocarbons (PAHs) from environmental water samples for the first time. Parameters influencing the extraction efficiency such as desorption time, extraction time, desorption solvent and salt concentration were investigated. Environmental water samples collected from a local lake were processed using this novel μ-SPE procedure. ZIF-8 proved to be a very efficient extraction sorbent for the extraction of trace analytes from water samples. The limits of detection from gas chromatography-mass spectrometric analysis of PAHs were 0.002-0.012. ng/ml. The linear ranges were 0.1-50 or 0.5-50. ng/ml. The relative standard deviations for five replicates of the extractions were in the range of 2.1-8.5%. © 2011 Elsevier B.V.
Source Title: Journal of Chromatography A
URI: http://scholarbank.nus.edu.sg/handle/10635/77362
ISSN: 00219673
DOI: 10.1016/j.chroma.2011.09.077
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