Extraction of phthalic acid esters from soft drinks and infusions by dispersive liquid-liquid microextraction based on the solidification of the floating organic drop using a menthol-based natural deep eutectic solvent was written by Ortega-Zamora, Cecilia;Jimenez-Skrzypek, Gabriel;Gonzalez-Salamo, Javier;Hernandez-Borges, Javier. And the article was included in Journal of Chromatography A in 2021.Application of 84-61-7 This article mentions the following:
In this work, a natural deep eutectic solvent (NADES) consisting of L-menthol and acetic acid in a 1:1 molar ratio has been applied as extraction solvent for the dispersive liquid-liquid microextraction based on the solidification of the floating organic drop (DLLME-SFO) of a group of nine phthalic acid esters (di-Pr phthalate, DPP; Bu benzyl phthalate, BBP; di-Bu phthalate, DBP; dicyclohexyl phthalate, DCHP; diisopentyl phthalate, DIPP; di-n-pentyl phthalate, DNPP; di(2-ethylhexyl) phthalate, DEHP; diisononyl phthalate, DINP; and diisodecyl phthalate, DIDP) from three common infusions (chamomile, pennyroyal mint, and linden teas) and three soft drinks (green tea, tonic, and lime and lemon drink), using dihexyl phthalate (DHP) and di-n-octyl phthalate (DNOP) as internal standards After the DLLME-SFO procedure, analyses were carried out by high-performance liquid chromatog. with UV detection. Method calibration showed good linearity for all the analytes and matrixes, with determination coefficients (R2) higher than 0.9910. Relative recovery values were between 71 and 125%, with relative standard deviation values in the range 1-22% for the six types of samples, while the limits of quantification of the method were in the range 4.3-51.1娓璯/L for infusions and in the range 3.5-33.3娓璯/L for soft drinks. Several samples purchased in different local supermarkets were analyzed, finding DPP, DBP, DIPP, DEHP and DINP, although only DPP, DBP and DEHP could be quantified in some of them. In the experiment, the researchers used many compounds, for example, Dicyclohexyl phthalate (cas: 84-61-7Application of 84-61-7).
Dicyclohexyl phthalate (cas: 84-61-7) belongs to esters. Esters are also usually derived from carboxylic acids. It may also be obtained by reaction of acid anhydride or acid halides with alcohols or by the reaction of salts of carboxylic acids with alkyl halides. Esters contain a carbonyl center, which gives rise to 120鎺?C閳ユ弲閳ユ彊 and O閳ユ弲閳ユ彊 angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C閳ユ彊閳ユ弲 bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Application of 84-61-7
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics