Journal Highlight: Application of pneumatic nebulization single-drop microextraction for the determination of organophosphorous pesticides by GC/MS

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  • Published: Sep 19, 2011
  • Channels: Sample Preparation
thumbnail image: Journal Highlight: Application of pneumatic nebulization single-drop microextraction for the determination of organophosphorous pesticides by GC/MS

Application of pneumatic nebulization single-drop microextraction for the determination of organophosphorous pesticides by gas chromatography-mass spectrometry

Journal of Separation Science 2011, 34, 1880-1885
Yeqiang Wang, Ziming Wang, Huihui Zhang, Yuhua Shi, Ruibing Ren, Hanqi Zhang, Yong Yu

Abstract: Organophosphorous pesticides (OPPs) including dichlorvos, diazinon, malathion, phenamiphos and chlorpyrifos, in water samples were extracted by pneumatic nebulization single-drop microextraction (PN-SDME) and then determined by gas chromatography-mass spectrometry (GC-MS). Experimental parameters affecting the performances of PN-SDME, such as flow rate of carrier gas, extraction time and microdrop volume, were examined and optimized. The limits of detection for the analytes were in the range of 0.0014-0.0019 µg/mL. The linear range was 0.0050-0.50 µg/mL, except dichlorvos (0.0070-0.50 µg/mL). Water samples were analyzed and the recoveries of the analytes in the spiked water samples were from 75.2 to 105.3%. The relative standard deviations were lower than 12.7%.

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Organophosphorous pesticides including dichlorvos, diazinon, malathion, phenamiphos and chlorpyrifos, were extracted from water samples by pneumatic nebulization single-drop microextraction for GC/MS analysis, with recoveries of 75.2 to 105.3% 

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