500996-04-3Relevant articles and documents
Ultrasound-assisted surfactant/ionic liquid aqueous two-phase system extraction prior to high performance liquid chromatography for the determination of tetracyclines in milk and honey samples
Antep, Hayriye Mine,Mumcu, Ta?k?n,Bostanci, Kamil,Seyhan Bozkurt, Serap,Merdivan, Melek
, p. 955 - 966 (2018/01/12)
In this work, an ultrasonic-assisted surfactant/ionic liquid aqueous two-phase system (ATPS) extraction method was developed to extract six tetracycline antibiotics from food samples before their chromatographic determination using high performance liquid chromatography. The ATPS was formed with 1-allyl-3-methyl-imidazolium bromide, Triton X-100, and dipotassium hydrogen phosphate. The parameters including type and amount of surfactant, ionic liquid and salt, pH of sample solution, and sonication time were optimized. Under the optimized conditions, linear calibration curves of the six tetracyclines were obtained in the range of 10–500 μg L?1 with > r2 = 0.990 (n = 9). The proposed green analytical extraction method was applied to the analysis of tetracycline antibiotics in milk and honey samples with recovery of 50%–110% and 68%–117%, respectively.
A general and direct synthesis of imidazolium ionic liquids using orthoesters
Kim, Do Joong,Oh, Kyung Hwan,Park, Jin Kyoon
supporting information, p. 4098 - 4101 (2014/11/07)
A general method to synthesize halide and halide-free ionic liquids was developed. Direct alkylation of imidazole and pyridine derivatives was performed in the presence of an acid using an orthoester as the alkyl donor yielding ionic liquid products. Residual Cl and water contents of the ionic liquids were determined by ion chromatography and a Karl-Fisher test. the Partner Organisations 2014.
Influence of different branched alkyl side chains on the properties of imidazolium-based ionic liquids
Erdmenger, Tina,Vitz, Juergen,Wiesbrock, Frank,Schubert, Ulrich S.
supporting information; experimental part, p. 5267 - 5273 (2010/03/24)
Several new branched ionic liquids were synthesized under microwave irradiation applying two different synthetic approaches. Different already known ionic liquids, both linear and branched, were added to this set of new ionic liquids to investigate the influence of the branching on the thermophysical properties to elucidate first structure-property relationships. Thermogravimetric analysis was utilized to investigate the decomposition behavior and differential scanning calorimetry was used to study the influence of the branching on the thermal behavior, e.g. the melting point, the glass transition temperature, the freezing point and the cold crystallization temperature. Moreover, the water uptake of selected ionic liquids was analyzed. The Royal Society of Chemistry 2008.