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 a Pavel KUBÁŇZákladní údaje
Originální název
Application of a macrocyclic compound, bambus[6]uril, in tailor-made liquid membranes for highly selective electromembrane extractions of inorganic anions
Autoři
SLAMPOVA, Andrea (203 Česká republika), Vladimír ŠINDELÁŘ (203 Česká republika, garant, domácí) a Pavel KUBÁŇ (203 Česká republika)
Vydání
Analytica Chimica Acta, Amsterdam, Elsevier Science publishers, 2017, 0003-2670
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10406 Analytical chemistry
Stát vydavatele
Nizozemské království
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 5.123
Kód RIV
RIV/00216224:14310/17:00098936
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000390629500005
Klíčová slova anglicky
Extraction selectivity; Electromembrane extractions; Host-guest interactions; Inorganic anions; Liquid membranes; Macrocyclic compounds
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 28. 3. 2018 15:57, Ing. Nicole Zrilić
Anotace
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.