Ytterbium(III)-selective membrane electrode based on cefixime

Ganjali, Mohammad Reza; Naji, Leila; Poursaberi, Tahereh; Shamsipur, Mojtaba; Haghgoo, Soheila

doi:10.1016/s0003-2670(02)01226-6

Cited by 79 publications

(44 citation statements)

References 31 publications

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“…21,22,[29][30][31][32]38,39 Thus, the influences of the membrane composition and the nature and amount of the plasticizer and additive on the potential response of the Al 3+ sensor were investigated. The results are summarized in Table 2.…”

Section: Resultsmentioning

confidence: 99%

“…32 In this work we found that the recently synthesized thioxanthone derivatives 1-hydroxythioxanthone (TX1), 1,3-dihydroxy-thioxanthone (TX2), 1,4-dihydroxy-thioxanthone (TX3), 1,4-dihydroxy-3-methylthioxanthone (TX4) and 1-hydroxy-3-methyl-thioxanthone (TX5) (Fig. 1) can form highly selective 2:1 (TX: metal ion) complexes with Al 3+ ion in a methanol solution.…”

Section: +mentioning

confidence: 99%

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Hydroxy-Thioxanthones as Suitable Neutral Ionophores for the Preparation of PVC-Membrane Potentiometric Sensors for Al(III) Ion

et al. 2004

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Experimental ReagentsReagent-grade nitrophenyl octyl ether (NPOE), dibutyl phthalate (DBP), acetophenone (AP), oleic acid (OA), sodium tetraphenylborate (STPB), high relative molecular weight PVC The complexation of five recently synthesized hydroxy-thioxanthone derivatives with Al 3+ ion was studied in a methanol solution spectrophotometrically, and the stepwise formation constants of the resulting 1:1 and 2:1 (ligand-to-metal) complexes were evaluated. The suitability of the thioxanthone derivatives as neutral ionophores for the preparation of a new Al 3+ ion-selective PVC-membrane electrode was investigated, and 1-hydroxy-3-methyl-thiocanthone was selected as the best compound for this purpose. The prepared electrode exhibits a Nernstian response for Al 3+ ions over a wide concentration range (2.0 × 10 -2 to 2.0 × 10 -6 M), with a limit of detection of 1.0 × 10 -6 M. It has a very fast response time of about 5 s and can be used for at least 3 months without any considerable divergence in the potentials. The proposed membrane sensor revealed very good selectivities for Al 3+ over a wide variety of other metal ions, and could be used at a working pH range of 3.4 -5.0. It was used as an indicator electrode in potentiometric titration of aluminum ions with EDTA, and in the determination of Al 3+ in different real samples.

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Section: Resultsmentioning

confidence: 99%

Section: +mentioning

confidence: 99%

Hydroxy-Thioxanthones as Suitable Neutral Ionophores for the Preparation of PVC-Membrane Potentiometric Sensors for Al(III) Ion

et al. 2004

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“…Color 8,11 .1 13,16 .1 23,26 ] tetratriaconta-1(30), 2,6,8,10,13,15,17, 21,23,25,28- 12,12,27,27-tetramethyl-31,32,33,34-tetrathia-3,6,18,21-tetraazapentacyclo [26.2.1.1 8,11 .1 13,16 .1 23,26 ] tetratriaconta-1 (30), 2,6,8,10,13,15,17,21,23,25,28-…”

Section: Synthesis Of Bis(5-formyl-2-thienyl)methane S Amentioning

confidence: 99%

“…These methods either are time-consuming, involve multiple sample manipulations, or are too expensive for most analytical laboratories; ion-selective electrodes (ISE) provide analytical procedures for such situations as they are fast, convenient, having minimum sample pre-treatment requirement and may also be suitable for online analysis. In view of such advantages, a number of lanthanide ion selective sensors based on poly(vinyl) chloride have been developed such as La 3+ [9,10], Yb 3+ [11], Gd 3+ [12], Sm 3+ [13], Er 3+ [14], Tb 3+ [15] and also on Dy 3+ [2,16,[17][18][19]. Although lot of work has been done on Dy 3+ selective membrane electrodes with good selective ranges, no one did comparative evaluation of Dy 3+ selective membrane electrodes; therefore authors have been synthesized three different derivatives of macrocyclic tetraimine Schiff's base for comparative evaluation of Dy 3+ selective membrane electrodes and improved the detection limit compared to reported work.…”

Section: Introductionmentioning

confidence: 99%

Comparative evaluation of Dy(III) selective poly(vinyl) chloride based membrane electrodes of macrocyclic tetraimine Schiff's bases

Gupta

Pal

Singh

2009

Talanta

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a b s t r a c tThree different derivatives of macrocyclic tetraimine Schiff's base have been synthesized and explored as a neutral ionophores for preparing poly(vinyl chloride) based membrane sensors selective to Dy 3+ . The addition of sodium tetraphenyl borate and various plasticizers, viz., o-NPOE, DBP, DBBP, DOP and CN has been found to substantially improve the performance of the sensors. The best performance was obtained with the sensor no. 1 having membrane of Schiff's base (SL-1) with composition (w/w) SL-1 (4.5%): PVC (30.5%): o-NPOE (59.5%): NaTPB (5.5%). This sensor exhibits Nernstian response with slope 19.4 mV/decade of activity in the concentration range of 10 −8 to 1.0 × 10 −2 M Dy 3+ , performs satisfactorily over wide pH range of (2.8-7.2) with a fast response time (10 s). The sensor was also found to work satisfactorily in partially non-aqueous media up to 20% (v/v) content of acetonitrile, methanol or ethanol. The proposed sensor can be used over a period of 1.5 months without significant drift in potentials. The sensor has been also utilized for the determination of Dy 3+ level in different soil samples.

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“…The recent introduction of a number of lanthanide selective membrane sensors for La(III), [9][10][11][12][13][14] Ce(III), [15][16][17] Nd(III), 18 Eu(III), 19 Sm(III), 20,21 Gd(III), 22 Tb(III), 23 Dy(III), 24 and Yb(III), 25 ions based on different noncyclic and macrocyclic ionophores, by our own and other groups, inspired us to try the construction of an Er(III)-selective electrode based on a PCMHT as an ion carrier. The resulting electrode shows to be suitable for the determination of Er(III) concentration in the range of…”

Section: Introductionmentioning

confidence: 99%

Application of pyridine-2-carbaldehyde-2-(4-methyl-1,3-benzo thiazol-2-yl)hydrazone as a neutral ionophore in the construction of a novel Er(III) sensor

Ganjali¹,

Rezapour²,

Rasoolipour³

et al. 2007

J. Braz. Chem. Soc.

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A piridina-2-carbaldeído-2-(4-metil-1,3-benzotiazol-2-il) hidrazona (PCMHT) pode ser usada como um ionóforo neutro apropriado à preparação de uma membrana sensora a Er(III), com alta seletividade. A composição ótima encontrada foi PCMHT-PVC-KTpClPB-BA com as razões de 6,0:30,0:5,0:59,0 . A excelente seletividade a Er(III) do sensor proposto, frente aos íons metálicos mais comuns e, especialmente íons lantanídeos, é uma outra vantagem. O sensor foi usado com sucesso como eletrodo indicador na titulação de 25 mL de 1,0 × 10 -4 mol L -1 de íons Er(III) com 1,0 × 10 -2 mol L -1 de EDTA. O sensor proposto foi usado na monitoração direta de Er(III) em misturas binárias e na determinação indireta de íons fluoreto em duas preparações de enxágüe bucal.We found that pyridine-2-carbaldehyde-2-(4-methyl-1,3-benzothiazol-2-yl) hydrazone (PCMHT) can be used as a suitable neutral ionophore for preparing an Er(III) membrane sensor with high selectivity. The optimum composition was found to be PCMHT-PVC-KTpClPB-BA with the ratios of 6.0:30.0:5.0:59.0, respectively. The Nernstian response was of 21.8 ± 0.5 mV decade -1 of Er(III) activity, the linear range of the sensor was found to be relatively wide (from 1.0×10 -5 to 1.0 ×10 -2 mol L -1). Its applicability pH range of 2.5-12.0 seems to make it suitable for analytical applications. EDTA. The proposed sensor was used for direct monitoring of Er(III) in binary mixtures and indirect determination of fluoride ions in two mouth wash preparations.

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Ytterbium(III)-selective membrane electrode based on cefixime

Cited by 79 publications

References 31 publications

Hydroxy-Thioxanthones as Suitable Neutral Ionophores for the Preparation of PVC-Membrane Potentiometric Sensors for Al(III) Ion

Hydroxy-Thioxanthones as Suitable Neutral Ionophores for the Preparation of PVC-Membrane Potentiometric Sensors for Al(III) Ion

Comparative evaluation of Dy(III) selective poly(vinyl) chloride based membrane electrodes of macrocyclic tetraimine Schiff's bases

Application of pyridine-2-carbaldehyde-2-(4-methyl-1,3-benzo thiazol-2-yl)hydrazone as a neutral ionophore in the construction of a novel Er(III) sensor

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