In-syringe-stirring: A novel approach for magnetic stirring-assisted dispersive liquid–liquid microextraction

An automatic, vigorous-injection assisted dispersive liquid–liquid microextraction technique for stopped-flow spectrophotometric detection of boron

“…The modifications enable (1) the automatic vigorous-injection of solvent into the aqueous phase to ensure efficient mixing of the phases; (2) contact between the organic and aqueous phases within a single tubing system to be eliminated; (3) easy direct-forwarding of the extraction phase for the detection step without the use of a holding coil; (4) simple cleaning of the whole system. In comparison with previously reported works, no additional instruments or homemade devices are required, and no special conditions or additional steps, such as magnetic stirring [28,29], heating/cooling [30,31], mixing by air bubbling [22,24] or microcolumn retention/elution [32][33][34][35][36][37] are needed. The suggested approach also satisfies the requirements of environmentally and user-friendly chemistry, since it employs low amounts of organic solvents and all parts of the manifold are commercially available.…”

“…Therefore, the alternative DLLME approaches, which employ the kinetic energy to ensure a mass transfer of analyte into extraction phase have been recently developed [25][26][27]. To the best of our knowledge, there are only few flow-based DLLME protocols, in which disperser was replaced by kinetic energy, namely air-bubbling [22,24] and magnetic-stirring [28,29].…”

“…2. No additional instruments or homemade devices are required and no special conditions or additional steps, such as magnetic stirring [28,29], heating/cooling [30,31] or microcolumn retention/elution [32][33][34][35][36][37] are needed. 3.…”

Temperature-assisted ionic liquid-based dispersive liquid–liquid microextraction with following back-extraction for HPLC/UV–Vis determination of 3-indole acetic acid in pea plants

“…Auxins are a group of plant hormones that have an essential role in the coordination of many growth processes in the 1 3 Table 1 A comparison table for temperature-assisted IL- Karst [15] 1 3 assistance [22], ultrasound assistance [23], and magnetic stirring assistance [24,25]. It is remarkable that in these methods an organic solvent is used as an extractant.…”

Automatic In-Syringe Dispersive Microsolid Phase Extraction Using Magnetic Metal–Organic Frameworks

“…To date, just one approach for automatic magnetic D-µ-SPE has been described, which is based on the use of dissolvable Fe 3 O 4 -layered double hydroxide core-shell microspheres as sorbent, and a dedicated autosampler as automation tool. 21 We report, in the present work, a novel approach for the automation of D-µ-SPE using magnetic materials based on the recently described lab-in-syringe concept, [22][23][24][25] which allows to fully benefit of the properties of the sorbent. Using this approach, the implementation of magnetic MOFs for automatic SPE has been carried out for the first time.…”