Dispersive solid-phase extraction followed by dispersive liquid–liquid microextraction for the determination of some sulfonylurea herbicides in soil by high-performance liquid chromatography

One-Step QuEChERS-Based Approach to Extraction and Cleanup in Multiresidue Analysis of Sulfonylurea Herbicides in Cereals by Liquid Chromatography–Tandem Mass Spectrometry

“…Applications of different extraction solvents, additions of buffers, optimization of the amount of solvents and salt or sample weight have been published (Wu et al 2009;Oshita and Jardim 2014;Walorczyk et al 2015b;Walorczyk 2014;Arias et al 2014;Min et al 2012;Anagnostopoulos et al 2012). The effective cleanup step in complex matrices reduces co-extracted interferences, and many studies considered the use of different d-SPE sorbents (Oshita and Jardim 2014;Walorczyk 2014;Kwon et al 2012;Lehotay 2011;Łozowicka et al 2012b;He et al 2015).…”

“…Several techniques of sample preparation, enrichment, and purification, up to isolation of sulfonylureas have been described. Many of them are based on solid-phase extraction (SPE) (Carabias-Martinez et al 2004;Seccia et al 2011), dispersive solid-phase extraction (DSPE) combined with dispersive liquid-liquid microextraction (DLLME) (Wu et al 2009), molecularly imprinted SPE (She et al 2010), or matrix soil-phase dispersion (MSPD) (Liang et al 2014;Łozowicka et al 2009). Most published methods involve liquid-soil extraction (LLE) Noche et al 2011) or salting-out liquid-liquid extraction (SALLE) (Nanita and Padivitage 2013).…”

Rapid determination of tetrabromobisphenol A and its main derivatives in aqueous samples by ultrasound-dispersive liquid–liquid microextraction combined with high-performance liquid chromatography

“…After centrifuging, the analytes in the sedimentary organic phase can be measured by conventional chromatographic techniques. DLLME is simple, rapid and environmentally friendly, and has been successfully measured trace organic pollutants in environment samples [15][16][17][18][19][20]. The present work was undertaken to determine TBBPA and its five derivatives by using ultrasound-dispersive liquidliquid microextraction (US-DLLME) coupled with HPLC.…”

A simple voltammetric determination of metsulfuron-methyl in water samples using differential pulse cathodic stripping voltammetry

“…11) MSM can be easily degraded in acidic media, as well as in soils with high moisture content and high temperature. 12) The available literature reports that numerous methods, such as chromatography, 7,[13][14][15][16] capillary electrophoresis, 10,17) and spectrophotometry, 18) have been used for the determination of MSM. However, these methods are usually costly, time-consuming, and tedious, and they consist of a sample pretreatment step.…”