Microextraction procedures combined with large volume injection in capillary gas chromatography for the determination of pesticide residues in environmental aqueous samples

Spectrofluorimetric Method for Quantification of Triazine Herbicides in Agricultural Matrices

“…2 A large number of methods have been reported in the literature for determination of triazine herbicides. These include LCelectrospray ionization mass spectrometry, 4,5 capillary electrophoresis, 6,7 gas chromatography (GC), [8][9][10] GC after liquid-liquid extraction, 11 GC with SPE, 12,13 separation by solid phase extraction-liquid chromatography-UV (SPE-LC-UV), 14,15 molecularly imprinted polymer, 16 dispersive liquid-liquid microextraction method based on solidification of floating organic droplet (DLLME-SFO), 17 HPLC 18 and immunoaffinity chromatography. 19 Most of the methods cited above involve time-consuming sample preparation, complex derivatization and need sophisticated instruments and trained personnel for operation.…”

Quantification of triazine herbicides in soil by microwave-assisted extraction and high-performance liquid chromatography

“…Most of the reported methods for triazine determination include separation by solid phase extraction-liquid chromatography-UV (SPE-LC-UV; Beilstein et al 1981;Lintelmann et al 1993;Gennaro and Giacosa 1996;Pinto and Jardim 2000;Dopico et al 2003;Zhou et al 2006;Katsumata et al 2006), LCelectrospray ionization tandem mass spectrometry (Pozzebon et al 2003;Bichon et al 2006), gas chromatography (GC; Beltran et al 1997;Rodríguez-Plasencia et al 1997;Dagnac et al 2005), GC after liquid-liquid extraction (Nagaraju and Huang 2007) and GC with SPE (Shen and Lee 2003;Rocha et al 2008), capillary electrophoresis (Carabias-Martínez et al 2000;Khrolenko et al 2002), immunoaffinity chromatography (Carrasco et al 2001), and molecularly imprinted polymer (Sambe et al 2007).…”

Extractive spectrophotometric method for determination of metribuzin herbicide and application of factorial design in optimization of various factors

“…Analysis of metribuzin has mainly been accomplished by different chromatographic methods such as liquid chromatography [5][6][7], micellar electrokinetic chromatography [8], solid-phase extraction and sample stacking-micellar electrokinetic capillary chromatography [9], capillary gas chromatography [10], capillary zone electrophoresis [11] and molecularly imprinted polymer [12]. All these methods are expensive, require long separation times and sometimes need the development of extremely complex gradient for the separation.…”