Novel Liquid Membrane Electrode for Selective Determination of Monohydrogenphosphate

Ganjali, Mohammad Reza; Mizani, Farhang; Emami, Mehdi; Niasari, M Salavati; Shamsipur, Mojtaba; Yousefi, Mohammad; Javanbakht, Mehran

doi:10.1002/elan.200390015

Cited by 44 publications

(17 citation statements)

References 24 publications

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“…Nernstian responses and the best durability were obtained for hydrogen-phosphate sensitive electrodes based on macrocylic polyamines [12,13] and macrocylic dithioxamide [2]. More recent examples show that uranyl salophene [14 -16], vanadyl salophene [17], vanadyl salen complex [18], oxo-molybdenum methyl-salen [19], well designed guanidinium [20], thiourea compounds [21], calixarene [22] or molybdenum acetylacetonate [23] are also effective for phosphate sensing based on ISEs.…”

Section: Introductionmentioning

confidence: 97%

Amide and Acyl‐Hydrazine Functionalized Calix[4]arenes as Carriers for Hydrogen Phosphate Selective Electrodes

Yan

et al. 2007

Electroanalysis

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Anion-selective solvent polymeric membrane based on hydrogen bond-forming, neutral ionophores with amide or acyl-hydrazine groups are described. The use of the two calix [4]arenes results in anion-selective electrodes with a selectivity for phosphate. The electrodes of the optimum characteristic have the composition of 1 wt% ionophore, 66 wt% o-NPOE, 33 wt% poly (vinyl chloride) (PVC) and TDMACl (15 or 30 mol% relative to the ionophore 1 and 2, respectively). The optimized membrane electrodes show Nernstian responses towards monohydrogen phosphate (À 29.1 and À 29.3 mV/decade) based on ionophore 1 and 2, respectively, in a wide concentration range (1.0 Â 10 À5 to 1.0 Â 10 À2 or 1.0 Â 10 À5 to 1.0 Â 10 À1 M). The selectivity coefficients are determined with the fixed interference method and the activity ratio method. The electrodes display an anti-Hofmeister series selectivity pattern and highly selective for HPO 4 2À over Cl . The lifetime of the electrodes is at least 1 month and their response time is found to be 25 s. The proposed sensors could be put to analytical use both by direct potentiometry as well as potentiometric titration.

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Section: Introductionmentioning

confidence: 97%

Amide and Acyl‐Hydrazine Functionalized Calix[4]arenes as Carriers for Hydrogen Phosphate Selective Electrodes

Yan

et al. 2007

Electroanalysis

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“…Organic tin compounds have traditionally been used as phosphate selective ionophores [9 -13], together with cobalt phthalocyanine [14] or polyamine [15] while uranyl salophene [16,17], vanadyl salene complex [18], well-designed guanidinium [19] oxo-molybdenum methyl-salen [20] and thiourea compounds [21] are some recent examples. In order to prepare ISEs for these ions, the membranes should contain ionophore molecules, which are able to bind specific ions.…”

Section: Introductionmentioning

confidence: 99%

Tripodal Cadmium Complex and Macrocyclic Ligand Based Sensors for Phosphate Ion Determination in Environmental Samples

et al. 2008

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Tripodal cadmium complex of hydrotris(3-phenyl-5-methylpyrazolyl)borate (I 1 ) and macrocyclic ligand 5,7 : 12,14 : 19,21 : 26,13,19,11,22,4,15, (I 2 ), have been synthesized and characterized by IR, 1 H NMR, Mass and elemental analysis. Spectroscopic investigations indicate high affinity of these receptors for dihydrogen phosphate ion. Polyvinyl chloride (PVC) based membranes of (I 1 ) and (I 2 ) using hexadecyl trimethylammonium bromide (HTAB) as cation discriminator and dibutylpthalate (DBP), tributyl phosphate (TBP), dioctylsebacate (DOS), and o-nitrophenyloctyl ether (o-NPOE), as plasticizing solvent mediators were prepared and investigated as H 2 PO À 4 selective sensors. The best performance was shown by the membrane of composition (w/w) (I 2 ) (5%):PVC (31%) : DBP (61.5%):HTAB (2.5%). This sensor works well over a wide concentration range 2.1 Â 10 À7 to 1.0 Â 10 À2 M with Nernstian compliance (59.0 mV decade À1 of activity) with a fast response time of 14 s and showed good selectivity for dihydrogen phosphate ion over a number of anions. The sensor exhibits good reproducibility (SD AE 0.3 mV) and could be used successfully for the determination of phosphate in soil water samples.

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“…Recently, a number of hydrogen phosphate membrane sensors based on different ion carriers such as dialkyl and diaryltin derivatives, uranyl salophen, vanadyl salen, vanadyl salophen, bis-thiourea and modified calix arene have been reported. [3][4][5][6][7][8][9][10][11][12][13][14][15][16] In recent years, we have introduced a number of selective membrane sensor for different anions such as Cl -, Br -, I -, SO 4 2-, NO 2 -, SCN -, HPO 4 2-, and I 3 -. 12,[16][17][18][19][20][21][22][23][24][25][26] In this report we introduce the synthesis of a oxomolybdenum methyl-salen and its application in fabrication of a highly selective and sensitive MHP membrane sensors for fast monitoring of MHP in various granular fertilizers as well as waste water of fertilizer industry.…”

Section: Introductionmentioning

confidence: 99%

“…As it is seen, the sensor in the case of the response time and detection limit is superior to the best previously reported MHP ion selective membrane electrodes. 12,16 …”

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confidence: 99%

Anion recognition: fabrication of a highly selective and sensitive HPO4(2-) PVC sensor based on a oxo-molybdenum methyl-salen

Ganjali¹,

Norouzi²,

Hatambeygi³

et al. 2006

J. Braz. Chem. Soc.

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Um sensor de monohidrogenofosfato (MHP) altamente seletivo e sensível foi obtido, através da preparação de uma membrana de PVC, contendo oxo-molibdênio com ligantes derivados do salen (MS) como carregador neutro, brometo de hexadeciltrimetil amônio (HTAB) como aditivo catiônico e benzilacetato (BA) como solvente plastificante mediador. A membrana sensora exibe uma resposta linear no intervalo de concentração de 1,0 × 10 -1 a 4,0 × 10 -7 mol L -1 de MHP. O eletrodo mostra uma inclinação Nernstiana de -28,6±0,3 mV década -1 em pH 8,5. O sensor proposto também exibe um tempo de resposta menor que 15s. O limite de detecção do sensor é 2,0 × 10 -7 mol L -1 (~20 ng mL -1 ), e pode ser usado por um período superior a oito semanas, sem alterações significantes na resposta. A seletividade do sensor, com relação a outros ânions comuns, orgânicos e inorgânicos (por exemplo, cloreto, brometo, iodeto, nitrato, sulfito, sulfato, carbonato, perclorato, cianeto, tiocianato, diidrogenofosfato, pirofosfato de tetrasódio e íons tripolifosfato de sódio) é excelente. A utilidade prática do sensor foi demonstrada pelo uso como eletrodo indicador na titulação potenciométrica de MHP com íons Ba 2+ e pela determinação direta de MHP em amostras de fertilizantes granular e líquido e em amostras de água de descarte.A highly selective and sensitive monohydrogen phosphate (MHP) sensor has been fabricated by constructing a poly vinyl chloride (PVC) matrix membrane containing a new oxo-molybdenum methyl-salen (MS) as a neutral carrier, hexadecyltrimethyl ammonium bromide (HTAB) as a cationic additive, benzylacetate (BA) as a plasticizing solvent mediator. The membrane sensor exhibits linear potential response in the concentration range of 1.0 ×10 -1 -4.0 × 10 -7 mol L -1 of MHP. The electrode displays a Nernstian slope of -28.6 ± 0.3 mV decade -1 in the pH of 8.5. The proposed sensor also exhibits a fast response time of

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Novel Liquid Membrane Electrode for Selective Determination of Monohydrogenphosphate

Cited by 44 publications

References 24 publications

Amide and Acyl‐Hydrazine Functionalized Calix[4]arenes as Carriers for Hydrogen Phosphate Selective Electrodes

Amide and Acyl‐Hydrazine Functionalized Calix[4]arenes as Carriers for Hydrogen Phosphate Selective Electrodes

Tripodal Cadmium Complex and Macrocyclic Ligand Based Sensors for Phosphate Ion Determination in Environmental Samples

Anion recognition: fabrication of a highly selective and sensitive HPO4(2-) PVC sensor based on a oxo-molybdenum methyl-salen

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