Sensitivity and linearity of headspace and liquid—liquid extraction techniques for gas chromatographic analysis of halocarbons in water

1986 ◽  
Vol 351 ◽  
pp. 165-175 ◽  
Author(s):  
Gianrico Castello ◽  
Tomaso C. Gerbino ◽  
Sterano Kanitz
Keyword(s):  
Chromatographic Analysis ◽  
Liquid Extraction ◽  
Extraction Techniques ◽  
Gas Chromatographic Analysis ◽  
Liquid Liquid Extraction

Complexing properties of α-isosaccharinate: thorium

2006 ◽  
Vol 94 (9-11) ◽  
Author(s):  
Stefan Allard ◽  
Christian Ekberg
Keyword(s):  
Organic Phase ◽  
Liquid Extraction ◽  
Extraction Techniques ◽  
Liquid Liquid Extraction ◽  
Complexing Properties

The complexation of Th with α-isosaccharinate has been studied using liquid–liquid-extraction techniques. An organic phase consisting of 0.025 M acetylacetone in toluene was used with a 1.0 M NaClO

Liquid-Liquid Extraction Based on Digital Microfluidics

2009 ◽  
Author(s):  
Hyejin Moon ◽  
Praveen Kunchala ◽  
Yasith Nanayakkara ◽  
Daniel W. Armstrong
Keyword(s):  
Room Temperature ◽  
Chemical Engineering ◽  
Digital Microfluidics ◽  
Liquid Extraction ◽  
Extraction Techniques ◽  
Immiscible Liquids ◽  
Liquid Liquid Extraction ◽  
Liquid Phases ◽  
On Chip ◽  
Digital Microfluidic

Liquid-liquid extraction techniques are one of the major tools in chemical engineering, analytical chemistry, and biology, especially in a system where two immiscible liquids have an interface solutes exchange between the two liquid phases along the interface up to a point where the concentration ratios in the two liquids reach their equilibrium values [1]. In this paper, we propose to use room temperature ionic liquid (RTIL) as a second liquid phase for extraction, which forms immiscible interface with aqueous solutions. We demonstrate liquid-liquid extraction with the EWOD digital microfluidic device, two model extraction systems were tested. One is organic dye extracted from RTIL(1-butyl-3-methylimidazolium bis(trifluoromethanesulfonylimide or BMIMNTf2) to water and the other is iodine (I2) extracted from water to BMIMNTf2. Droplets of aqueous solution and BMIMNTf2 solution were generated on chip reservoir then transported for extraction and separated by EWOD actuation successfully.

scholarly journals Comprehensive two-dimensional gas chromatographic analysis of volatile organic compounds in distillate of fermented Sorbus domestica fruit

2015 ◽  
Vol 13 (1) ◽  
Author(s):  
Olga Vyviurska ◽  
Solomiya Pysarevska ◽  
Nikoleta Jánošková ◽  
Ivan Špánik
Keyword(s):  
Chromatographic Analysis ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Liquid Extraction ◽  
Elution Order ◽  
Polar Medium ◽  
Nonpolar Medium ◽  
Liquid Liquid Extraction ◽  
Volatile Organic ◽  
Benzyl Esters

AbstractThe Slovak-Czech spirit distilled from Sorbus domestica was analyzed by GCxGC with headspace solid phase microextraction and liquid-liquid extraction. Two column combinations, nonpolar × medium-polar and polar × medium-polar were tested. The second column setup provided more exploited 2D separation space with better distribution of peaks in chromatogram. Effects of the first column on the elution order of γ-lactones, benzyl esters, and unsaturated aldehydes in the second separation were observed. More than 500 compounds were detected; nearly 100 were confirmed with standards.

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