Please use this identifier to cite or link to this item:
|Title:||Electroenhanced solid-phase microextraction of methamphetamine with commercial fibers|
Yan Ang, M.J.
Gas chromatography mass spectrometer
|Citation:||Tan, T.Y., Basheer, C., Yan Ang, M.J., Lee, H.K. (2013-07-05). Electroenhanced solid-phase microextraction of methamphetamine with commercial fibers. Journal of Chromatography A 1297 : 12-16. ScholarBank@NUS Repository. https://doi.org/10.1016/j.chroma.2013.04.082|
|Abstract:||Electroenhanced solid-phase microextraction (EE-SPME) method with gas chromatographic mass spectrometric analysis was investigated for the determination of methamphetamine in urine sample with commercial fibers. In this approach, commercial SPME fibers were used in direct immersion mode with an applied potential to extract methamphetamine. EE-SPME was more effective in the extraction compared to conventional SPME (i.e. application of potential). The method was simple to use, and avoided the need for alkalization and derivatization of methamphetamine. Experimental conditions were optimized to achieve better extraction performance. Various conditions including applied potential, sample pH, extraction and desorption time were investigated. Based on the optimized conditions, EE-SPME achieved a higher enrichment factor of 159-fold than conventional SPME. The calibration plot under the best selected parameters was linear in the range of 0.5-15. ng/mL (r=. 0.9948). The feasibility of EE-SPME was demonstrated by applying it to the analysis of human urine samples. The limit of detection of methamphetamine was 0.25. ng/mL with a satisfactory relative standard deviation of 6.12% (n=. 3) in human urine. © 2013 Elsevier B.V.|
|Source Title:||Journal of Chromatography A|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Sep 20, 2018
WEB OF SCIENCETM
checked on Sep 5, 2018
checked on Sep 21, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.