Validation and optimization of a liquid-phase microextraction method for trace analysis of BTEX in water samples

Faraji, Hakim; Tajbakhsh, Mohamadreza; Helalizadeh, Masoumeh

doi:10.1039/c2ay25336d

Cited by 11 publications

(1 citation statement)

References 38 publications

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“…Gas chromatography and electron-capture detection (GC-ECD) [3] or GC-MS [4] have been used for determination of OCPs and pyrethroid pesticides in samples, because of their high resolution capacity and the availability of selective detectors. Nowadays, the methods of sample preparation for pesticides in vegetables include solid-phase microextraction (SPME) [5], solid phase extraction (SPE) [3], solid phase membrane tip extraction (SPMTE) [6] and dispersive liquid-liquid microextraction (DLLME) [7] in conjunction with GC or HPLC.…”

Section: Introductionmentioning

confidence: 99%

Determination of Organochlorine and Pyrethroid Pesticides Using Membrane-Protected Multiwalled Carbon Nanotubes Solid Phase Membrane Tip Extraction

Gao

Xiao

et al. 2012

AMR

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A microextraction technique of solid phase membrane tip extraction (SPMTE) prior to gas chromatograph was developed to determine fifteen pesticides (organochlorine （OCPs） and pyrethroid). In the SPMTE procedure, multiwalled carbon nanotubes (MWCNTs) were used as the adsorbent enclosed in SPMTE device and then several important parameters influenced extraction efficiency were comprehensively optimized. Under the optimum conditions, the method obtaine good linearity in the range of 1–500.0 and 1.5–750.0 ng mL-1for OCPs and pyrethroid pesticides, low limits of detection in the range of 0.018–1.064 ng mL-1(S/N=3). Seven target analytes are detected in river sample, none of the other samples tested show any pesticide residue. The developed method is a simple, feasible, and inexpensive microextraction technique.

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