On July 5, 2021, Sulc, Jakub; Pacheco-Fernandez, Idaira; Ayala, Juan H.; Bajerova, Petra; Pino, Veronica published an article.COA of Formula: C24H27NO2 The title of the article was A green miniaturized aqueous biphasic system prepared with cholinium chloride and a phosphate salt to extract and preconcentrate personal care products in wastewater samples. And the article contained the following:
A miniaturized extraction/preconcentration method based on an aqueous biphasic system (μ-ABS) was developed with reagents commonly used as food additives: cholinium chloride (ChCl) as main extraction phase, K2HPO4 as salting-out agent, and water as the main component (being the sample for analyses). With the aim of obtaining high enrichment factors, miniaturization, and adequate anal. performance, a point in the biphasic region with the lowest amount of ChCl was selected, corresponding to 1.55% (weight/weight) of ChCl, 59.5% (weight/weight) of K2HPO4, and 38.95% (weight/weight) of water. The green μ-ABS (attending to its main elements and performance mode) was used in combination with high-performance liquid chromatog. with diode-array detection (HPLC-DAD) for the determination of 9 personal care products in wastewater samples. The μ-ABS-HPLC-DAD method showed high enrichment factors (up to 100), and quant. extraction efficiencies for those compounds containing OH groups in their structure, which can undergo hydrogen bonding with ChCl. Thus, limits of quantification down to 0.8μg·L-1 and extraction efficiencies between 66.4 and 108% (concentration levels of 1.3 and 13μg·L-1) were reached for the group of parabens and the UV-filter benzophenone-3. The method is characterized by the use of non-harmful reagents and the absence of organic solvents in the entire sample preparation procedure, while being simple, low-cost, easily compatible with HPLC, and highly efficient. The experimental process involved the reaction of 2-Ethylhexyl 2-cyano-3,3-diphenylacrylate(cas: 6197-30-4).COA of Formula: C24H27NO2
The Article related to miniaturized aqueous biphasic system cholinium chloride phosphate salt, green chem personal care product wastewater, aqueous biphasic system, cholinium chloride, extraction, high-performance liquid chromatography, personal care products, wastewater and other aspects.COA of Formula: C24H27NO2
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