Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.chroma.2012.09.016
Title: Sonication-assisted emulsification microextraction combined with vortex-assisted porous membrane-protected micro-solid-phase extraction using mixed zeolitic imidazolate frameworks 8 as sorbent
Authors: Ge, D.
Lee, H.K. 
Keywords: Nanometer and micron-sized zeolite imidazolate frameworks 8
Sonication-assisted emulsification microextraction coupled to vortex-assisted porous membrane-protected micro-solid-phase extraction
Water analysis
Issue Date: 9-Nov-2012
Citation: Ge, D., Lee, H.K. (2012-11-09). Sonication-assisted emulsification microextraction combined with vortex-assisted porous membrane-protected micro-solid-phase extraction using mixed zeolitic imidazolate frameworks 8 as sorbent. Journal of Chromatography A 1263 : 1-6. ScholarBank@NUS Repository. https://doi.org/10.1016/j.chroma.2012.09.016
Abstract: Mixed zeolitic imidazolate framework 8 (ZIF-8) (nanometer and micron-sized) material were synthesized and applied as sorbent to sonication-assisted emulsification microextraction coupled to vortex-assisted porous membrane-protected micro-solid-phase extraction (SAE-VA-μ-SPE) of polycyclic aromatic hydrocarbons (PAHs) from water samples. Better extraction results was obtained by using the mixed sorbent for the extraction of PAHs from aqueous samples, than either nanometer or micron-sized ZIF-8 separately. The developed method proved to be a time-saving, highly efficient (total extraction procedure was less than 10. min), accurate and robust method for water sample pretreatment. Parameters influencing the extraction efficiency such as desorption solvent, extraction solvent volume, emulsification time, desorption time and salt concentration were investigated and optimized. The limits of detection from gas chromatography-mass spectrometric analysis of six PAHs after SAE-VA-μ-SPE ranged between 0.004 and 0.011. ng/ml. The linear ranges were from 0.05 to 50. ng/ml, and the correlation coefficient was higher than 0.9943. The proposed method provides an interesting and innovative approach of combining different microscale sample preparation methods to solve analytical problems that are not easily addressed by the individual procedure alone. © 2012 Elsevier B.V.
Source Title: Journal of Chromatography A
URI: http://scholarbank.nus.edu.sg/handle/10635/77029
ISSN: 00219673
DOI: 10.1016/j.chroma.2012.09.016
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

58
checked on Dec 17, 2018

WEB OF SCIENCETM
Citations

57
checked on Dec 17, 2018

Page view(s)

89
checked on Dec 15, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.