Selective fluoride recognition and potentiometric properties of ion-selective electrodes based on bis(halodiphenylstannyl)alkanes

Polymeric membrane electrodes with improved fluoride selectivity and lifetime based on Zr(IV)- and Al(III)-tetraphenylporphyrin derivatives

“…Similarly, thus far, relatively few useful fluoride-selective polymeric membrane electrodes have been reported [8][9][10][11][12][13][14][15]. Most suffer from practical problems such as high level of interference by lipophilic anions [11,12,15], super-nernstian response slopes, sluggish and not fully reversible response properties [8,9,10,14] and short use lifetimes of the electrodes [14].…”

“…Most suffer from practical problems such as high level of interference by lipophilic anions [11,12,15], super-nernstian response slopes, sluggish and not fully reversible response properties [8,9,10,14] and short use lifetimes of the electrodes [14]. Recent research has suggested that membranes formulated with Al(III) octaethylporhyrin (Al [OEP]) and Al(III) tetraphenylporphyrin (Al[TPP]) [14] exhibit very high potentiometric selectivity towards fluoride anions, and this has led also to the design of highly selective optical fluoride sensors with sub-micromolar fluoride ion detection limit [16,17].…”

Novel DGT method with tri-metal oxide adsorbent for in situ spatiotemporal flux measurement of fluoride in waters and sediments

“…Numerous methodologies have been applied to the measurement of F -in waters 64 and sediments, including F -selective electrodes (Perdikaki et al, 2002), ion 65 chromatography (Hoop et al, 1996;Severi et al, 2014), fluorescence capillary 66 electrophoresis (Hoop et al, 1996), 19 F nuclear magnetic resonance spectra (Zeng and 67 Stebbins, 2000) and colorimetric determination (Zhu et al, 2005). Although some of 68 these methods are sensitive, they have rarely been used in field analysis owing to their 69 non-portability (Sun et al, 2014 (Perdikaki et al, 2002), and above all a low accuracy,…”

“…Although some of 68 these methods are sensitive, they have rarely been used in field analysis owing to their 69 non-portability (Sun et al, 2014 (Perdikaki et al, 2002), and above all a low accuracy,…”

Bis[di‐n‐alkyl(fluoro)stannyl]methanes, (R2FSn)2CH2 (R = n‐octyl, n‐dodecyl): Stable Fluoride‐Selective Carriers

“…Moreover 2 , when incorporated into polymeric-membrane ion-selective electrodes, are highly selective carriers for fluoride [8] and phosphate ions, [9] respectively. When these carriers are used to develop chemical sensors, the observed signal is unstable over prolonged periods, while re- peated use influences both the sensitivity (the slope of the calibration curve expressed in mV per Ϫlog[anion] units) and detection limit of the sensor.…”