Mechanism of Photoreductive Extraction of Vanadium in a Liquid−Liquid Extraction System Using Bis(2-ethylhexyl)phosphoric Acid

2000 ◽  
Vol 39 (8) ◽  
pp. 3018-3023 ◽  
Author(s):  
Syouhei Nishihama ◽  
Takayuki Hirai ◽  
Isao Komasawa
Keyword(s):  
Phosphoric Acid ◽  
Liquid Extraction ◽  
Extraction System ◽  
Liquid Liquid Extraction

scholarly journals Comparison of two sample preparation procedures for HPLC determination of ochratoxin A

2009 ◽  
Vol 61 (4) ◽  
pp. 639-644 ◽  
Author(s):  
Gorica Vukovic ◽  
Snezana Pavlovic ◽  
M.S. Ristic
Keyword(s):  
Sample Preparation ◽  
Phosphoric Acid ◽  
Ochratoxin A ◽  
Chromatographic Determination ◽  
Liquid Extraction ◽  
Immunoaffinity Column ◽  
Maize Flour ◽  
Liquid Liquid Extraction ◽  
Immunoaffinity Columns

In preparation of samples for chromatographic determination of ochratoxin A, two types of columns were used for sample cleanup (SPE and immunoaffinity columns). The first method consisted of liquid-liquid extraction with a mixture of chloroform and phosphoric acid, followed by ion-exchange cleanup on Waters Oasis MAX columns. The sec?ond method consisted of extraction with a mixture of water and methanol, followed by LCTech OtaCLEAN immunoaf?finity column cleanup. Recoveries of the methods were determined at three levels in three repetitions for maize flour, and they were 84% (%RSD = 19.2) for the first method of sample preparation and 101% (%RSD = 2.2) for the second method. Values of LOQ for OTA were 0.25 and 1.00 ?g/kg for the IAC and SPE clean-up procedures, respectively. Both methods comply with present regulations, but the MAX sample clean-up procedure should be used as an alternative, since the immunoaffinity column clean-up procedure is characterized by better reproducibility, accuracy, and efficiency.

Photoreductive Stripping of Cobalt Loaded on Hydroxyoxime Extractant in a Liquid−Liquid Extraction System

2000 ◽  
Vol 39 (12) ◽  
pp. 4986-4990 ◽  
Author(s):  
Syouhei Nishihama ◽  
Nobuya Sakaguchi ◽  
Takayuki Hirai ◽  
Isao Komasawa
Keyword(s):  
Liquid Extraction ◽  
Extraction System ◽  
Liquid Liquid Extraction

Effective and simple recovery of 1,3-propanediol from a fermented medium by liquid–liquid extraction system with ethanol and K 3 PO 4

2018 ◽  
Vol 26 (1) ◽  
pp. 104-108 ◽  
Author(s):  
Daiana Wischral ◽  
Hongxin Fu ◽  
Fernando L. Pellegrini Pessoa ◽  
Nei Pereira ◽  
Shang-Tian Yang
Keyword(s):  
Liquid Extraction ◽  
Extraction System ◽  
Liquid Liquid Extraction

Use of combined solvent extraction-electrodeposition techniques to uranium and thorium isotopes analysis in industrial phosphoric acid, phosphate and phosphogypsum by alpha-particle spectrometry

2003 ◽  
Vol 91 (1) ◽  
Author(s):  
R. Zarki ◽  
A. Elyahyaoui ◽  
A. Chiadli
Keyword(s):  
Solvent Extraction ◽  
Phosphoric Acid ◽  
Isotopic Composition ◽  
Alpha Particle ◽  
Phosphate Rock ◽  
Liquid Extraction ◽  
Acid Phosphate ◽  
Liquid Liquid Extraction ◽  
Thorium Isotopes

SummaryA method combining liquid-liquid extraction and electrodeposition procedures is carried out to determine isotopic composition of uranium and thorium in technical wet phosphoric acid, phosphate rock and phosphogypsum leachates, by

Liquid–liquid extraction system with microstructured coiled flow inverter and other capillary setups for single-stage extraction applications

2016 ◽  
Vol 284 ◽  
pp. 764-777 ◽  
Author(s):  
Safa Kutup Kurt ◽  
Iris Vural Gürsel ◽  
Volker Hessel ◽  
Krishna D.P. Nigam ◽  
Norbert Kockmann
Keyword(s):  
Liquid Extraction ◽  
Single Stage ◽  
Extraction System ◽  
Liquid Liquid Extraction

scholarly journals A fully automated liquid–liquid extraction system utilizing interface detection

2000 ◽  
Vol 22 (6) ◽  
pp. 187-194 ◽  
Author(s):  
Eugene Maslana ◽  
Robert Schmitt ◽  
Jeffrey Pan
Keyword(s):  
High Speed ◽  
Methylene Chloride ◽  
Phase Interface ◽  
Liquid Extraction ◽  
Automated System ◽  
Extraction System ◽  
Wash Cycle ◽  
Large Sets ◽  
Liquid Liquid Extraction

The development of the Abbott Liquid-Liquid Extraction Station was a result of the need for an automated system to perform aqueous extraction on large sets of newly synthesized organic compounds used for drug discovery. The system utilizes a cylindrical laboratory robot to shuttle sample vials between two loading racks, two identical extraction stations, and a centrifuge. Extraction is performed by detecting the phase interface (by difference in refractive index) of the moving column of fluid drawn from the bottom of each vial containing a biphasic mixture. The integration of interface detection with fluid extraction maximizes sample throughput. Abbott-developed electronics process the detector signals. Sample mixing is performed by high-speed solvent injection. Centrifuging of the samples reduces interface emulsions. Operating software permits the user to program wash protocols with any one of six solvents per wash cycle with as many cycle repeats as necessary. Station capacity is eighty, 15 ml vials. This system has proven successful with a broad spectrum of both ethyl acetate and methylene chloride based chemistries. The development and characterization of this automated extraction system will be presented.

scholarly journals Liquid-liquid extraction technique for purification of Egyptian WET process phosphoric acid

2010 ◽  
Vol 54 (2) ◽  
pp. 57 ◽  
Author(s):  
Ali Akl Magda ◽  
Mohammed Youssef Abdul Fatah ◽  
Mohammed Ali Mohsen ◽  
Ibraheim Amin Mostafa
Keyword(s):  
Phosphoric Acid ◽  
Liquid Extraction ◽  
Extraction Technique ◽  
Wet Process ◽  
Liquid Liquid Extraction
Sign in / Sign up

Export Citation Format

Share Document