In-drop derivatisation liquid-phase microextraction assisted by ion-pairing transfer for the gas chromatographic determination of phenolic endocrine disruptors

Liquid-phase and dispersive liquid–liquid microextraction techniques with derivatization: Recent applications in bioanalysis

“…Among the group of anti-homeostatic compounds collectively named as endocrine disrupting chemicals (EDCs), 10 phenolic types in the urine have been successfully determined by ionpairing assisted in-drop LPME [34]. The analytical procedure was performed in a 5-mL vial fitted with screw cap having a polytrifluoroethylene (PTFE)-lined silicon septum.…”

In situ solvent formation microextraction based on ionic liquids: A novel sample preparation technique for determination of inorganic species in saline solutions

“…Melting point, density and water solubility of some imidazolium-ILs containing PF 6 − and BF 4 − [48,53] are listed in Table 1. According to the above-mentioned considerations, 1-hexyl-3-methylimidazolium tetrafluoroborate and sodium hexafluorophosphate were selected as hydrophilic IL and ion-pairing agent, respectively.…”

“…E-mail address: shemiran@khayam.ut.ac.ir (F. Shemirani). happens due to increase in the bulk solution viscosity [1][2][3][4][5] and change in physical properties of the Nernst diffusion film [6][7][8][9][10][11]. In SBSE, some pores of monoliths are blocked by crystals of salt during desorption step which leads to incomplete analyte desorption [12].…”

Determination of Trace Amounts of Organophosphorous Pesticides in Water Using Hollow Fiber Liquid Phase Microextraction Combined with High Performance Liquid Chromatography

“…Liquid phase microextracion have been proposed and utilized to determine phenolic compounds in water, soil and milk samples [4][5][6][7][8][9] , PAHs [10][11][12] , aniline and its derivatives [13,14] , organic compounds in pesticides [15][16][17][18][19][20][21][22][23][24] and drugs [25][26][27][28][29][30] coupled with HPLC, CE, GC, LC/MS, GC/MS and MS. The organic solvent (such as 1-octanol, toluene, etc.)…”