Selective fluorometric determination of indium(III) by high-performance liquid chromatography with 2-methyl-8-quinolinol based on a ligand-exchange reaction of silanol groups

Uehara, Nobuo; Jinno, Ken'ichi; Hashimoto, Michiru; Shijo, Yoshio

doi:10.1016/s0021-9673(97)00823-6

Cited by 17 publications

(18 citation statements)

References 23 publications

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“…In previous studies we reported 26,27 that the divalent metal complexes of 2-methyl-8-quinolinol did not respond to the silanol groups on the surface of ODS silica gel. It is well-known that aluminum(III) ion does not react with 2-methyl-8-quinolinol in aqueous media.…”

Section: Detection Of Gallium(iii) Complexmentioning

confidence: 84%

“…We have reported that the elution behavior of tris(2-methyl-8-quinolinolato)gallium(III) is severely influenced by silanol groups. 26,27 Trace amounts of silanol groups caused a distortion or disappearance of the RP-HPLC peak of tris(2-methyl-8-quinolinolato)gallium(III). This phenomenon was based on a ligand-exchange reaction between the chelating ligands and the silanol groups.…”

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confidence: 99%

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Tris(2-methyl-8-quinolinolato)gallium(III) as a Fluorescent Probe for Sensitive Silanol-Testing

2005

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Section: Detection Of Gallium(iii) Complexmentioning

confidence: 84%

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confidence: 99%

Tris(2-methyl-8-quinolinolato)gallium(III) as a Fluorescent Probe for Sensitive Silanol-Testing

2005

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“…In previous papers, 25,26 we reported that the iron(III) complex not only gave a similar response to tris(2-methyl-8-quinolinolato)gallium(III) for silanol groups, but also showed a wide visible absorption band, which enabled detection of the complex without any interference from the ligand added into the eluent of the iron(III) complex, even with the spectrophotometric detection. 26 Here, we describe a comparison of the iron(III) complex with some silanol-detecting tests using nitrogen-containing compounds, which shows that the iron(III) complex works as a sensitive silanol-detecting probe as well as tris(2-methyl-8-quinolinolato)gallium(III).…”

Section: Introductionmentioning

confidence: 87%

Tris(2-methyl-8-quinolinolato)iron(III) as a Novel Spectrophotometric Probe for Silanol Detection

2006

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Tris(2-methyl-8-quinolinolato)iron(III) was proposed as a sensitive spectrophotometric silanol-detecting probe based on the coordination ability of silanol groups on the surface of octadecylsylanized silica gel (ODS silica gel) for reversedphase high-performance liquid chromatography. A peak of the iron(III) complex on a chromatogram abruptly collapsed as the silanol content in an ODS column increased, indicating that the iron(III) complex could sense trace amounts of silanol groups. The change of the peak parameters, such as the peak height and the peak area was highly related to the output of some nitrogen-containing compounds used as silanol-detecting probes as a function of the silanol content in an ODS column. The response of the peak height of the iron(III) complex to the silanol content was much more sensitive than the response of the nitrogen-containing probes, and was comparable to that of tris(2-methyl-8-quinolinolato)gallium(III), which had been proposed as a fluorometric silanol-detecting probe based on the coordination ability of the silanol groups.

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“…13 Several methods are used to identify indium(III), including atomic absorption spectrometry, 14 voltammetry, 15 spectrophotometry 16 and HPLC. 17 However, only a few liquid or conventional ion selective electrodes (ISEs) have been described for indium(III), [18][19][20] and they exhibit similar drawbacks to such types, such as difficult handling because of the presence of liquids or inner solutions. Additionally, some of the reported electrodes were not sensitive enough; their reported detection limits were approximately 10 −5 M or higher and work in a narrow pH range.…”

Section: Introductionmentioning

confidence: 99%

A Solid-Contact Indium(III) Sensor based on a Thiosulfinate Ionophore Derived from Omeprazole

Abbas¹,

Amer²

2013

Bulletin of the Korean Chemical Society

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A novel solid-contact indium(III)-selective sensor based on bis-(1H-benzimidazole-5-methoxy-2-[(4-methoxy-3, 5-dimethyl-1-pyridinyl) 2-methyl]) thiosulfinate, known as an omeprazole dimer (OD) and a neutral ionophore, was constructed, and its performance characteristics were evaluated. The sensor was prepared by applying a membrane cocktail containing the ionophore to a graphite rod pre-coated with polyethylene dioxythiophene (PEDOT) conducting polymer as the ion-to-electron transducer. The membrane contained 3.6% OD, 2.3% oleic acid (OA) and 62% dioctyl phthalate (DOP) as the solvent mediator in PVC and produced a good potentiometric response to indium(III) ions with a Nernstian slope of 19.09 mV/decade. The constructed sensor possessed a linear concentration range from 3 × 10 −7 to 1 × 10 −2 M and a lower detection limit (LDL) of 1 × 10 −7 M indium(III) over a pH range of 4.0-7.0. It also displayed a fast response time and good selectivity for indium(III) over several other ions. The sensor can be used for longer than three months without any considerable divergence in potential. The sensor was utilized for direct and flow injection potentiometric (FIP) determination of indium(III) in alloys. The parameters that control the flow injection method were optimized. Indium(III) was quantitatively recovered, and the results agreed with those obtained using atomic absorption spectrophotometry, as confirmed by the f and t values. The sensor was also utilized as an indicator electrode for the potentiometric titration of fluoride in the presence of chloride, bromide, iodide and thiocyanate ions using indium(III) nitrate as the titrant.

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Selective fluorometric determination of indium(III) by high-performance liquid chromatography with 2-methyl-8-quinolinol based on a ligand-exchange reaction of silanol groups

Cited by 17 publications

References 23 publications

Tris(2-methyl-8-quinolinolato)gallium(III) as a Fluorescent Probe for Sensitive Silanol-Testing

Tris(2-methyl-8-quinolinolato)gallium(III) as a Fluorescent Probe for Sensitive Silanol-Testing

Tris(2-methyl-8-quinolinolato)iron(III) as a Novel Spectrophotometric Probe for Silanol Detection

A Solid-Contact Indium(III) Sensor based on a Thiosulfinate Ionophore Derived from Omeprazole

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