PPb Level Monitoring of Dy(III) Ions by a Highly Sensitive and Selective Dy(III) Sensor Based on a New Asymmetrical Schiff's Base

Lanthanide Recognition: Development of an Asymetric Gadolinium Microsensor Based on N-(2-pyridyl)-N′-(4-nitrophenyl)thiourea

“…Because some neutral ion carriers containing nitrogen, sulfur, or both nitrogen and sulfur donor atoms have been reported to be used in construction of selective and sensitive transition and heavy-metal ion membrane sensors lately (Akhond, Najafi, and Tashkhourian 2004;Chowdhury et al 1996;Gaber 2003;Ganjali et al 2003;Ganjali, Rezapour et al 2004;Ganjali, Rahimi et al 2004; Ganjali, Ravanshad Ganjali, Matloobi et al 2005;Ganjali, Ghesmi et al 2005;Ganjali, Norouzi, Yousefian et al 2006, Ganjali, Mirnaghi et al 2006Ganjali, Dodangeh et al 2006;Ganjali, Norouzi, Alizadeh et al 2006;Ganjali, Daftari et al 2007;Gupta, Jain, and Chandra 2003;Ito and Goto 2001;Karami et al 2003;Khalil 2003;Saleh, Gaber, and Khalaf 2006;Shamsipur 2001Zamani et al 2006a,b;Zamani, Ganjali, and Adib 2007) and considering the existence of three donating nitrogen atoms in its structure, PyTu 4 NO 2 was expected to act as a suitable neutral ion carrier in the PVC membranes. This ionophore previously used in construction of a conventional ion selective sensor (Ganjali, Norouzi, & Alizadeh 2007).…”

One decade of research on ion-selective electrodes in Iran (1996–2006)

“…Other sensors include Eu 3+ [171,172], Gd 3+ [173][174][175][176], Tb 3+ [177,178], Dy 3+ [179,180], Ho 3+ [181,182], Er 3+ [183], Tm 3+ [184,185], Yb 3+ [186][187][188] PMEs, in addition to one Lu 3+ PME [189] and two uranyl PMEs and GCE [190,191]. The minimum detection limit among all of these sensors is reported to be 7.0 × 10 -8 for uranyl ion [191], which is a 2,2'- …”

Thulium(III) Ions Monitoring by a Novel Thulium(III) Microelectrode Based on a S‐N Schiff Base

“…Although the neutral carrier-type ISEs have been successful for the determination of a wide variety of metal ions [5], including the alkali, alkaline-earth, transition and some other heavy metal ions, there are only a limited number of reports on the development of highly selective electrodes for eleven lanthanide ions based on different noncyclic and macrocyclic ionophores such as (2-mercaptoanil)diacetyl [6], aza-crown [7], dicyclohexano-18-crown-6 [8], 1,3,5-trithiacyclohexane [9], N-N Schiffs base [10], bis(thiophenal)phenylen-1,3-diamine [11], 1-phenyl-3-methyl-4-octadecanoyl-5-pyrazolone [12], 4-methyl-2-hydrazinobenzo-thiazole [13], 5,14-N,N'-hydroxyphenyl-4,15-dioxo-1,5,14,18-tetraaza hexacosane [14], on N-(2-pyridyl)-N'-(2-methoxyphenyl)-thiourea [15], gliclazide [16] and bis(5-nitro-2-furaldehyde)butane-2,3-dihydrazone [17] for lanthanum, 1,3,5-trithiane [18,19], azomethine [20] and N'-[(2-Hydroxyphenyl) methylidene]-2-furohydrazide [21] for cerium, bis(thiaalkylxanthato)alkanes [22], glipizide [23,24] for samarium, omeprazole [25] S-N Schiffs base [26] and N-(2-pyridyl)-N'-(4-nitrophenyl)thiourea [27] for gadolinium, N-(2-pyridyl)-N'-(2-methoxyphenyl)-thiourea [28], (3-hydroxy-N'-[(2-hydrox yphenyl) methylene]-2-naphthohydrazide [29], and cefixime [30] for ytterbium, N,N-diethyl-N-(4-hydroxy-6-methylpyridin-2-yl)guanidine [31] and S-N hexadentates Schiffs base [32] for europium, bispyrrolidene Schiffs base [33] for terbium, bis-pyrrolidene Schiffs base [34] and asymmetrical Schiffs base [35] for dysprosium, N'-(2-hydroxy-1,2-diphenylethylidene) benzohydrazide [36] for erbium, N-(1-thien-2-ylmethylene)-1,3-benzothiazol-2-amine [37] and N,N'-bis(2-quinolinecar...…”