Insights into Tripodal Tris(pyrazolyl) Compounds as Ionophores for Potentiometric Ammonium Ion Sensing

Colozza, NoemiKTH,Kemi,Univ Roma Tor Vergata, Dept Chem Sci & Technol, Via Ric Sci, I-00133 Rome, Italy. (författare)

QC 20221024
The decentralisation of accurate determination of the ammonium ion (NH4+) is relevant for environmental monitoring (i. e., nitrogen cycle) and certain clinical applications (e. g., kidney and liver diseases). Potentiometric ionophore-based sensors are one alternative for these purposes in terms of versatile implementation, though the potassium ion (K+) is known to be a major source of interference. We herein investigate the use of three different tripodal tris(pyrazolyl) compounds derived from 1,3,5-triethylbenzene as NH4+ ionophores. A complete set of potentiometric experiments together with theoretical simulations reveals suitable analytical performance while demonstrating a suppression of the K+ interference given the formation of an adequate cavity in the ionophore to host NH4+ over K+ in the membrane environment. The results support the use of these electrodes in the analytical detection of NH4+ in a wide range of samples with variable contents.

NATURVETENSKAP Geovetenskap och miljövetenskap Naturgeografi hsv//swe
NATURAL SCIENCES Earth and Related Environmental Sciences Physical Geography hsv//eng
ammonium ion detection
ammonium ionophores
ion-ionophore complex characterisation
potassium interference
tripodal tris(pyrazolyl) compounds

Casanova, AnaKTH,Kemi(Swepub:kth)u1d3t8l9 (författare)
Fernandez-Perez, Bibiana M.KTH,Kemi(Swepub:kth)u19wknka (författare)
Crespo, Gaston A.,1980-KTH,Tillämpad fysikalisk kemi(Swepub:kth)u185cj5g (författare)
Flores, Gabriel A.Florida Int Univ, Dept Chem & Biochem, 11200 SW 8th St, Miami, FL 33199 USA.;Florida Int Univ, Biomol Sci Inst, 11200 SW 8th St, Miami, FL 33199 USA. (författare)
Kavallieratos, KonstantinosFlorida Int Univ, Dept Chem & Biochem, 11200 SW 8th St, Miami, FL 33199 USA.;Florida Int Univ, Biomol Sci Inst, 11200 SW 8th St, Miami, FL 33199 USA. (författare)
Juan Angel, de Gracia Triviño,1989-KTH,Teoretisk kemi och biologi(Swepub:kth)u12qv2s2 (författare)
Ahlquist, Mårten S. G.,1979-KTH,Kemi(Swepub:kth)u1agoeae (författare)
Cuartero, Maria,PhD,1984-KTH,Tillämpad fysikalisk kemi(Swepub:kth)u1lfp38j (författare)
KTHKemi (creator_code:org_t)

Av författaren/redakt...: Colozza, Noemi; Casanova, Ana; Fernandez-Perez, ...; Crespo, Gaston A ...; Flores, Gabriel ...; Kavallieratos, K ...; visa fler...; Juan Angel, de G ...; Ahlquist, Mårten ...; Cuartero, Maria, ...; visa färre...

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