Selectivity in the coextraction of cation and anion by electrochemically modulated liquid-liquid extraction

Analytical Chemistry
Alfonso Berduque, Damien W M Arrigan

Abstract

Electrochemistry at the interface between two immiscible electrolyte solutions has been presented as a method of electrochemically modulated liquid-liquid extraction, where ions in a mixture can be selectively partitioned as a function of the applied interfacial potential difference. In this study, a mixture comprising 4-octylbenzenesulfonate (4-OBSA-) and tetraethylammonium (TEA+) ions was evaluated. The application of negative potential differences enabled the selective extraction of 4-OBSA- into the organic phase, and more positive potential differences enabled the selective extraction of TEA+. However, intermediate potentials lead to the coextraction of both ions into the organic phase, with apparent selectivity for TEA+ over 4-OBSA-. An increased concentration of either ion in the mixture inhibited the extraction response of the other ion, but the order of the extraction at these intermediate potentials was always TEA+ followed by 4-OBSA-. The reasons for the selectivity for the cation over the anion are discussed.

References

Aug 22, 2000·Analytical Chemistry·S SantessonS Nilsson
Mar 15, 2001·Journal of Pharmaceutical and Biomedical Analysis·E Terjéki, M Kapás
Apr 2, 2002·Analytical Chemistry·Shigeo SawadaToshiyuki Osakai
Jan 15, 2004·Analytical Chemistry·Sabina SantessonStaffan Nilsson
Nov 30, 2004·Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry·Hirosuke Tatsumi, Hajime Katano
Nov 16, 2005·Analytical Chemistry·Alfonso BerduqueDamien W M Arrigan

❮ Previous
Next ❯

Citations

Sep 19, 2008·Analytical and Bioanalytical Chemistry·Courtney J Collins, Damien W M Arrigan
Oct 12, 2011·Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry·Nickolaj Jacob PetersenAstrid Gjelstad
Apr 2, 2011·Bioanalysis·Astrid Gjelstad, Stig Pedersen-Bjergaard
Sep 11, 2010·Physical Chemistry Chemical Physics : PCCP·Angela MolinaEncarnación Torralba
Mar 24, 2016·Bioanalysis·Maryam RezazadehShahram Seidi
Feb 12, 2015·Journal of Pharmaceutical and Biomedical Analysis·Chuixiu HuangStig Pedersen-Bjergaard
Nov 8, 2016·Physical Chemistry Chemical Physics : PCCP·Ross J EllisMark R Antonio
Sep 4, 2009·Electrophoresis·Garry D SiskDamien W M Arrigan
Oct 10, 2008·Analytical Chemistry·Courtney J CollinsDamien W M Arrigan
May 6, 2019·Analytical Chemistry·Maizatul Najwa JajuliGrégoire Herzog
Jun 3, 2008·Journal of Agricultural and Food Chemistry·Grégoire HerzogDamien W M Arrigan

❮ Previous
Next ❯

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.