Separation of Anthocyaninic and Nonanthocyaninic Flavonoids by Liquid–Liquid Extraction Based on Their Acid–Base Properties: A Green Chemistry Approach

2020 ◽  
Vol 97 (12) ◽  
pp. 4533-4539
Author(s):  
Cátia I. Sampaio ◽  
Luís F. Sousa ◽  
Alice M. Dias
Keyword(s):  
Green Chemistry ◽  
Liquid Extraction ◽  
Acid Base ◽  
Liquid Liquid Extraction ◽  
Base Properties

Development of a new version of homogenous liquid–liquid extraction based on an acid–base reaction: application for extraction and preconcentration of aryloxyphenoxy-propionate pesticides from fruit juice and vegetable samples

RSC Advances ◽  
2016 ◽  
Vol 6 (18) ◽  
pp. 14927-14936 ◽  
Author(s):  
Mir Ali Farajzadeh ◽  
Behruz Feriduni ◽  
Mohammad Reza Afshar Mogaddam
Keyword(s):  
Fruit Juice ◽  
Liquid Extraction ◽  
Acid Base ◽  
Vegetable Samples ◽  
Liquid Liquid Extraction

In this paper, a new version of HLLE based on an acid–base reaction combined with DLLME followed by GC-FID has been developed for the extraction and determination of aryloxyphenoxy-propionate pesticides in fruit juice and vegetable samples.

Anti-cholinesterase potential of diverse botanical families from Malaysia: Evaluation of crude extracts and fractions from liquid-liquid extraction and acid-base fractionation

2019 ◽  
Vol 245 ◽  
pp. 112160
Author(s):  
Mira Syahfriena Amir Rawa ◽  
Zurina Hassan ◽  
Vikneswaran Murugaiyah ◽  
Toshihiko Nogawa ◽  
Habibah A. Wahab
Keyword(s):  
Liquid Extraction ◽  
Acid Base ◽  
Liquid Liquid Extraction ◽  
Crude Extracts

Comparison of Sorption and Extraction Methods for Recovery of Trace Organics from Water

1983 ◽  
Vol 15 (6-7) ◽  
pp. 149-159 ◽  
Author(s):  
V C Blok ◽  
G P Slater ◽  
E M Giblin
Keyword(s):  
Solvent Extraction ◽  
Methylene Chloride ◽  
Extraction Methods ◽  
Liquid Extraction ◽  
Standard Mixture ◽  
Liquid Liquid Extraction ◽  
Trace Organics ◽  
Tenax Gc

Several commercially available adsorbents were compared with solvent extraction methods for their utility in recovering trace organics from water. The adsorbents examined included Amberlite XAD-2, XAD-4 and XAD-8, Ambersorb XE340 and XE348 and Tenax-GC. All were found to produce high artifact levels, even after extensive clean-up, making them unsuitable for the analysis of trace organics in water. Quantitatively, Likens-Nickerson or continuous liquid-liquid extraction with méthylene chloride gave better recoveries than the adsorbents. Qualitatively, extractive methods were preferred as they yielded much lower levels of impurities than the adsorbents. These methods of recovering trace organics were evaluated using a standard mixture of compounds added to the water at a level of 55 µg/l. Likens-Nickerson extraction gave comparable recoveries of this mixture at 55 µg/l and 11 µg/l.

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