Assessment of toxic metal ions in tea samples using new microextraction technique based on the solidified deep eutectic solvent followed by GFAAS

Atomic spectrometry update: review of advances in the analysis of clinical and biological materials, foods and beverages

“…A procedure based on a Vortex assisted LPME was used to investigate the levels of potentially toxic elements (As, Cd, Cu, Hg and Pb) in a range of teas by ETAAS. Ahmadi-Jouibari et al 177 developed a method for a 'close to room temperature' extraction using 1decyl-3-methylimidazolium chloride-n-butanoic acid as the extraction mixture. The sample was digested with HNO 3 -H 2 O 2 in a microwave oven and an aliquot of the ltered digestate underwent vortex assisted LPME with diethyl dithiophosphoric acid, as a complexing agent, and the extraction mixture, at 50 C. The mixture was cooled on ice to solidify the enriched extraction mixture, which was then removed, melted and dissolved in ACN for analysis.…”

Deep Eutectic Solvents as Promising Green Solvents in Dispersive Liquid–Liquid Microextraction Based on Solidification of Floating Organic Droplet: Recent Applications, Challenges and Future Perspectives

“…Lead is the only metal from column 14 in the Periodic Table of Elements that has been studied [ 17 , 74 , 75 ]. Arsenic and selenium are metalloids that have been extracted using DLLME-SFOD [ 76 , 77 , 78 , 79 ].…”

“…Arsenic and selenium are metalloids that have been extracted using DLLME-SFOD [ 76 , 77 , 78 , 79 ]. In regard to the transition metals, zinc [ 80 ], cobalt [ 55 ], copper [ 17 , 74 ], mercury [ 74 , 75 , 77 ], nickel [ 55 ], cadmium [ 17 , 74 , 75 , 80 ], and chromium [ 81 ] have all been quantified using DES in DLLME-SFOD. Most of the reported methods have been established to determine the total metal concentration; however, only a handful of them involve speciation investigations [ 56 , 57 , 58 ].…”

The combination of two microextraction methods coupled with gas chromatography for the determination of pyrethroid insecticides in multimedia environmental samples: air, water, soil, urine and blood

“…DESs have the advantages of lower melting point than their individual components, low vapour pressure, low volatility, high thermal stability and ability to extract target compounds; moreover, they have low cost and easy preparation of non‐toxic compounds compared to other common organic solvents. The Fattahi group has reported the researches about DESs DLLME‐SFO for organic compounds and metals extraction in various samples (Akramipour et al , 2018; Pirsaheb and Fattahi, 2018; Ahmadi‐Jouibari et al , 2019; Akramipour et al , 2019; Habibollahi et al , 2019).…”