title: Solid-phase extraction of matrine and oxymatrine from Sophora Flavescens Ait using amino-imidazolium polymer.
abstract: A new, polymer-confined, ionic liquid sorbent was developed by a process involving polymerization and modification. The obtained particles were successfully used as a special sorbent in SPE process to isolate matrine and oxymatrine from Sophora Flavescens Ait. Different washing and elution solvents, such as ethanol, methanol, acetonitrile and methanol/triethylamine (90:10, v/v), were evaluated. Compared with the C(18) and NH(2) sorbents, the amino-imidazolium polymer sorbent exhibited higher selectivity. Quantitative analysis was carried out by using a C(18) column. The two compounds exhibited good linearity from 5x10(-3) to 0.50 mg/mL (r(2)>0.99). The bound amounts between target compounds and proteins were obtained by this sorbent. After three recycles of amino-imidazolium polymer, the extract amounts of the target compounds were not significantly decreased.
authors.affiliation: Department of Chemical Engineering, Inha University, Incheon, Korea.
authors.forename: Wentao
authors.initials: W
authors.lastname: Bi
authors.forename: Minglei
authors.initials: M
authors.lastname: Tian
authors.forename: Kyung Ho
authors.initials: KH
authors.lastname: Row
mesh_terms: D000470:Alkaloids / Q000302:isolation & purification*; D002851:Chromatography, High Pressure Liquid; D007093:Imidazoles / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D010316:Particle Size; D011108:Polymers / Q000737:chemistry*; D011807:Quinolizines / Q000302:isolation & purification*; D029909:Sophora / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D000093842:Matrines
chemical_list: D000470:Alkaloids; D007093:Imidazoles; D011108:Polymers; D011807:Quinolizines; C037573:oxymatrine; D000093842:Matrines