Determination of phenol in polymeric materials by supercritical fluid extraction combined with gas chromatography–mass spectrometry

Marín, María; Jiménez, Alfonso; Vilaplana, J.; López, J.; Berenguer, V.

doi:10.1016/s0021-9673(98)00349-5

Cited by 10 publications

(7 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[ 35 ] This method has been used especially in plant extraction experiments to find the optimum response between the different factor levels. [ 36 37 ]…”

Section: Introductionmentioning

confidence: 99%

Comparison of ultrasound-assisted extraction and dynamic maceration over content of tagitinin C obtained from Tithonia diversifolia (Hemsl.) A. gray leaves using factorial design

et al. 2017

View full text Add to dashboard Cite

Background:Tithonia diversifolia belongs to the Asteraceae family. The leaves of T. diversifolia have been studied lately because of the presence of tagitinin C.Objective:Looking for an easy and inexpensive method to extract tagitinin C from T. diversifolia leaves, this work aims to conduct a screening to evaluate the influence of different experimental factors using the dynamic maceration and ultrasound-assisted extraction methods with 23 factorial design based on response surface methodology in enhancing this chemical marker extraction.Materials and Methods:The experimental factors were: extraction time (ET) of 30 and 60 minutes, solid: liquid ratio (SLR) of 5 and 10 grams/grams and ethanolic strength (ES) 48 and 96% (w/w). The experiments were done tripled. The content of tagitinin C in each produced extract was quantified by HPLC method.Results:The highest concentrations of tagitinin C obtained under the experimental design were 0.53 mg/mL and 0.71 mg/mL, respectively for dynamic maceration (DM) and ultrasound-assisted extraction (UAE) from Tithonia diversifolia powdered leaves. For the UAE method, the main parameter for higher contents of tagitinin C was the solid: liquid ratio, followed by the ethanolic strength, and the extraction time was not significant for this method. As for the DM method, all the parameters (SLR, ES, and ET) were significant for a higher content of tagitinin C.Conclusion:Based on the obtained results, it was revealed that the ultrasound-assisted extraction was more effective than dynamic maceration for tagitinin C extraction from T. diversifolia powdered leaves.Summary Tithonia diversifolia leaves possess tagitinin C, a sesquiterpene lactone, as an important secondary metabolite with several biological activities, such as antimalarial, gastroprotective, chemotherapeutic adjuvants, and toxic activities.Ultrasound-assisted extraction was more effective to obtain higher levels of tagitinin C when compared with dynamic maceration extraction.Factorial design can be employed as a screening tool to find the effects of factors investigated in the extraction processes. Abbreviation used: DME: dynamic maceration extraction, UAE: ultrasound-assisted extraction, ET: extraction time, ES: ethanolic strength, SLR: solid:liquid ratio, Tag C: tagitinin C, HPLC: high-performance liquid chromatography.

show abstract

“…[ 35 ] This method has been used especially in plant extraction experiments to find the optimum response between the different factor levels. [ 36 37 ]…”

Section: Introductionmentioning

confidence: 99%

Comparison of ultrasound-assisted extraction and dynamic maceration over content of tagitinin C obtained from Tithonia diversifolia (Hemsl.) A. gray leaves using factorial design

et al. 2017

View full text Add to dashboard Cite

show abstract

“…Numerous papers have described the estimation of various types of antioxidants used in polymer manufacturing [1][2][3][4][5][6][7][8][9][10][11]. The need for their analysis is very important, particularly in connection with medical plastics and food packaging where the levels of such potentially toxic substances must be accurately known.…”

Section: Introductionmentioning

confidence: 99%

“…Many sophisticated techniques have been proposed for the analysis of these antioxidants, including laser desorption/Fourier transform ion cyclotron resonance mass spectrometry [1], supercritical fluid extraction combined with GC-MS [2], pyrolysis-gas chromatography [3][4] and HPLC [5]. However, these techniques still do not satisfy all *Corresponding author.…”

Section: Introductionmentioning

confidence: 99%

Study on fluorimetric properties of 1,2-dihydro-2,2,4-trimethylquinoline

Moldovan

Alexandrescu

Vasilescu

et al. 2006

JICS

View full text Add to dashboard Cite

The title compound, 1,2-dihydro-2,2,4-trimethylquinoline (TMQ), is a quinoline family member and is among others used to prevent the oxidative degradation of polymers. TMQ has been characterized by its fluorescence emission. In this work the effects of solvent, acidity, continuous irradiation and the influence of some interferents upon the fluorescence intensity of TMQ were investigated. Under the selected conditions (in propan-1-ol solution at λ excitation /λ emission = 334 nm/412 nm), the fluorescence intensity is proportional to the concentration of TMQ over the range 0.05-5 μg ml -1 with a correlation coefficient of 0.9963. The proposed method was applied to the determination of TMQ in synthetic mixtures of polymer additives and specific rubber samples.

show abstract

“…Historically, Soxhlet extractions using organic-aqueous solvents at the boiling point were mostly used in the collection of residues in solid matrices, although this method consumes time and organic solvents. Nowadays, microwave-assisted extraction (MAE) [11], accelerated solvent extraction (ASE) [12] and supercritical-fluid extraction (SFE) [13][14][15][16][17][18] are developed to get better recoveries and reduce the drawbacks 0003-2670/$ -see front matter © 2004 Elsevier B.V. All rights reserved. doi:10.1016/j.aca.2004.08.064 mentioned above.…”

Section: Introductionmentioning

confidence: 99%

“…Since many variables have to be considered simultaneously in SFE, factorial designs [13,17,18] and multilinear regression [21] both are formal optimization methods, excluding trial-and-error (univariate) procedure. In this study, we present a 4 5 factorial design for optimizing SFE of styrenedivinylbenzene copolymer, XAD-4 sorbents, which are energetic and capable of the simultaneous preconcentration of 15 phenols in the diluted aqueous samples.…”

Section: Introductionmentioning

confidence: 99%

Optimization of preconcentration and isolation for the determination of 15 phenols by supercritical-fluid extraction and gas chromatography with metallomesogenic stationary phase

Chen

Liu

2005

Analytica Chimica Acta

View full text Add to dashboard Cite

Determination of phenol in polymeric materials by supercritical fluid extraction combined with gas chromatography–mass spectrometry

Cited by 10 publications

References 19 publications

Comparison of ultrasound-assisted extraction and dynamic maceration over content of tagitinin C obtained from Tithonia diversifolia (Hemsl.) A. gray leaves using factorial design

Comparison of ultrasound-assisted extraction and dynamic maceration over content of tagitinin C obtained from Tithonia diversifolia (Hemsl.) A. gray leaves using factorial design

Study on fluorimetric properties of 1,2-dihydro-2,2,4-trimethylquinoline

Optimization of preconcentration and isolation for the determination of 15 phenols by supercritical-fluid extraction and gas chromatography with metallomesogenic stationary phase

Contact Info

Product

Resources

About