Please use this identifier to cite or link to this item:
|Title:||Determination of organophosphorous pesticides in wastewater samples using binary-solvent liquid-phase microextraction and solid-phase microextraction: A comparative study|
|Authors:||Basheer, C. |
|Citation:||Basheer, C., Alnedhary, A.A., Rao, B.S.M., Lee, H.K. (2007-12-19). Determination of organophosphorous pesticides in wastewater samples using binary-solvent liquid-phase microextraction and solid-phase microextraction: A comparative study. Analytica Chimica Acta 605 (2) : 147-152. ScholarBank@NUS Repository. https://doi.org/10.1016/j.aca.2007.10.006|
|Abstract:||A simple and efficient binary solvent-based two-phase hollow fiber membrane (HFM)-protected liquid-phase microextraction (BN-LPME) technique for moderately polar compounds was developed. Six organophosphorous pesticides (OPPs) (triethylphosphorothioate, thionazin, sulfotep, phorate, disulfoton, methyl parathion and ethyl parathion) were used as model compounds and extracted from 10-mL wastewater with a binary-solvent (toluene:hexane, 1:1) mixture. Some important extraction parameters, such as extraction time, effect of salt, sample pH and solvent ratio composition were optimized. BN-LPME combined with gas chromatography/mass spectrometric (GC/MS) analysis provided repeatability (R.S.D.s ≤ 12%, n = 4), and linearity (r ≤ 0.994) and solid-phase microextraction provides comparable of R.S.D.s ≤ 13%, n = 4 and linearity (r = ≤0.966) for spiked water samples. The limits of detection (LODs) were in the range of 0.3-11.4 ng L-1 for BN-LPME and 3.1-120.5 ng L-1 for SPME at (S/N = 3) under GC/MS selective ion monitoring mode. In addition to high enrichment, BN-LPME also served as a sample cleanup procedure, with the HFM act as a filtering medium to prevent large particles and extraneous materials from being extracted. To investigate and compare their applicability, the BN-LPME and SPME procedures were applied to the detection of OPPs in domestic wastewater samples. © 2007 Elsevier B.V. All rights reserved.|
|Source Title:||Analytica Chimica Acta|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Mar 18, 2019
WEB OF SCIENCETM
checked on Mar 18, 2019
checked on Mar 23, 2019
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.