J 2017

Application of a macrocyclic compound, bambus[6]uril, in tailor-made liquid membranes for highly selective electromembrane extractions of inorganic anions

SLAMPOVA, Andrea, Vladimír ŠINDELÁŘ and Pavel KUBÁŇ

Basic information

Original name

Application of a macrocyclic compound, bambus[6]uril, in tailor-made liquid membranes for highly selective electromembrane extractions of inorganic anions

Authors

SLAMPOVA, Andrea (203 Czech Republic), Vladimír ŠINDELÁŘ (203 Czech Republic, guarantor, belonging to the institution) and Pavel KUBÁŇ (203 Czech Republic)

Edition

Analytica Chimica Acta, Amsterdam, Elsevier Science publishers, 2017, 0003-2670

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10406 Analytical chemistry

Country of publisher

Netherlands

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 5.123

RIV identification code

RIV/00216224:14310/17:00098936

Organization unit

Faculty of Science

DOI

UT WoS

000390629500005

Keywords in English

Extraction selectivity; Electromembrane extractions; Host-guest interactions; Inorganic anions; Liquid membranes; Macrocyclic compounds

Tags

Tags

International impact, Reviewed
Změněno: 28/3/2018 15:57, Ing. Nicole Zrilić

Abstract

V originále

A tailor-made liquid membrane consisting of a resistive organic solvent (nitrobenzene, NB) and a highly selective non-ionic macrocyclic compound (bambus[6]uril, BU6) was employed for electromembrane extraction (EME) of inorganic anions. BU6 facilitates strong host-guest interactions of its internal cavity with selected inorganic anions only and its presence in the liquid membrane ensured excellent selectivity of the EME process. EME transfers were directly related to association constants between BU6 and inorganic anions and nearly absolute selectivity was achieved for EMEs of iodide, bromide and perchlorate. Major inorganic anions (chloride, nitrate, sulphate and carbonate), which exhibit low interactions with BU6 cavity, were efficiently eliminated from the EME transfer. No interferences were observed for EMEs of target analytes from samples containing up to 100.000-fold higher concentrations of the major anions. Addition of species-specific macrocyclic modifiers to free and supported liquid membranes might thus open new directions in fine-tuning of EME selectivity. At optimized EME conditions (polypropylene hollow fiber impregnated with NB + 3% (w/w) BU6, extraction voltage 25 V, extraction time 15 min, deionized water as acceptor solution) perchlorate was selectively extracted from tap water at concentrations below the guideline value recommended by United States Environmental Protection Agency. Excellent selectivity of the tailor-made liquid membrane was further demonstrated by EME of bromide from sea water.