Use of Solid Phase Extraction with Hydrophilic-Lipophilic Balance (HLB)Cartridge as the Appropriate Option for Metribuzin Extraction from ContaminatedSoils

Journal of the Brazilian Chemical Society

Mohammad R. Rigi¹  Mohsen Farahbakhsh¹  Karamatollah Rezaei¹ 

关键词: metribuzin;    multi-walled carbon nanotubes;    hydrophilic-lipophilic balance;    QuECheRS;    ultrasonic;   

DOI  :  10.5935/0103-5053.20140232

来源: SciELO

【 摘 要 】

With a view to analyze metribuzin residues in soil samples, we need to use specialand suitable extraction methods with high efficiency. Five simple and rapidextraction methods (solid phase extraction (SPE) with hydrophilic-lipophilic balance(HLB), SPE with multi-walled carbon nanotubes (MWCNTs), ultrasonic, quick, easy,cheap, effective, rugged and safe (QuECheRS) method, and liquid-solid extraction)coupled to gas chromatography were used for the analysis of metribuzin herbicideresidues in soils. Mean recovery values of analyte were > 80%. Extracts wereanalyzed by a gas chromatographic (GC) system equipped with an electron capturedetector (ECD). The order of mean recovery values of metribuzin for the fiveextraction methods is: SPE with HLB > SPE with MWCNTs > ultrasonic >QuECheRS > liquid-solid extraction. Mean recovery of analyte depends on the typeof soil. The results of this study show that SPE with HLB extraction method is thebest option for extracting metribuzin in selected soils.

【 授权许可】

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