Lanthanide recognition: A Ho3+ potentiometric membrane sensor as a probe for determination of terazosin

Shams, H.; Faridbod, Farnoush; Hajiaghababaei, Leila; Norouzi, Parviz

doi:10.1016/j.msec.2008.11.010

Cited by 58 publications

(16 citation statements)

References 35 publications

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“…Ion-pairs used in ISEs should have rapid exchange kinetics and adequate formation constants. In addition, they should have good solubility in the electrode matrix and sufficient lipophilicity to prevent leaching into the sample solution [43]. The amount of the ion-pair (GNS-RN) was varied in the paste composition (Table 1) ).…”

Section: Optimization Of Electrodes Compositionmentioning

confidence: 99%

A New Approach for Decreasing the Detection Limit of Gentamicin Ion‐selective Electrodes by Incorporation of Multiwall Carbon Nanotubes (MWCNTs)/Lipophilic Anionic Additives

Khalil

El-aziz

2016

Electroanalysis

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Two novel carbon paste electrodes based on gentamicin‐reineckate (GNS‐RN)/multiwall carbon nanotubes (MWCNTs)/sodium tetraphenyl borate (NaTPB) or potassium tetraphenylborate (KTPB) for potentiometric determination of gentamicin sulfate were constructed. Our endeavors of lowering the detection limit for gentamicin ion‐selective electrodes were described. The paper focused on gentamicin carbon paste electrodes based on GNS‐RN as electroactive material, o‐nitrophenyloctyl ether (o‐NPOE) as plasticizer and incorporation of MWCNTs and lipophilic anionic additives (NaTPB and KTPB) which lower the detection limit of the electrodes showing best results for determination of gentamicin ion. The characteristics of the electrodes, GNS‐RN+NaTPB+MWCNTs (sensor 1) and GNS‐RN+KTPB+ MWCNTs (sensor 2), were measured, showing favorable features as they provided measurements of the potential with near‐Nernstian slopes of 29.6±0.3 and 29.1±0.3 mV/decade over the concentration range of 1.0×10−6–1.0×10−2 mol L−1 and pH ranges 3.0–8.2 and 3.0–8.0 in short response times (6.5 sec). Importantly, the electrodes had low detection limits of 3.0×10−7and 3.4×10−7 mol L−1 for the two sensors, respectively. The sensors showed high selectivity for gentamicin ion with respect to a large number of interfering species. The electrodes were successfully applied for the potentiometric determination of GNS ions in pure state, pharmaceutical preparations and human urine with high accuracy and precision. The results of this study were compared with some previously published data using other analytical methods.

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Section: Optimization Of Electrodes Compositionmentioning

confidence: 99%

A New Approach for Decreasing the Detection Limit of Gentamicin Ion‐selective Electrodes by Incorporation of Multiwall Carbon Nanotubes (MWCNTs)/Lipophilic Anionic Additives

Khalil

El-aziz

2016

Electroanalysis

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“…These methods included UV-Visible spectrophotometry [7-11], spectrofluorimetry [12][13][14], flow injection analysis (FIA) [15][16][17], voltammetry [18][19], potentiometry [20][21], high-performance thin layer chromatography (HPTLC) [22][23][24][25][26][27], and high-performance liquid chromatography (HPLC) with UV detection [28][29][30][31][32][33], fluorescence detection [34][35][36][37] and mass detection [38][39][40][41].…”

Section: Figmentioning

confidence: 99%

A sensitive and reliable method for therapeutic monitoring of α1-blockers in rabbit plasma by ion-pair chromatography with enhanced fluorescence detection

Ahmed

Mohamed

Zohny

2015

Microchemical Journal

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“…Lanthanide series has rather similar properties. Having different radii of the lanthanum ions (from Ce 3+ to Lu 3+ vary from 1.02 to 0.80 Å) causes their different properties, such as charge densities and hydration energy (from Ce 3+ to Lu 3+ their hydration energy ranges from 3370 to 3760 kJ/mol) [13,19]. In designing an ion-selective electrode for the lanthanide ions, ionophores having semi cavity, heteroatoms (N, O and S as donor atoms), and high flexibility are suitable.…”

Section: Potential Responses Of the Ho 3+ Sensormentioning

confidence: 99%

“…Although there are a few reports on holmium potentiometric sensors [12][13][14][15][16][17], there is a need to find more selective ionophores which can form a selective complex with one of the lanthanides more than others. In this work, N-(4,5-dimethyl-2-(picolinamido)phenyl)picolinamide (H 2 Me 2 bpb) ( Fig.…”

Section: Introductionmentioning

confidence: 99%

A Ho(III) potentiometric polymeric membrane sensor based on a new four dentate neutral ion carrier

Zamani¹,

Zangeneh-Asadabadi²,

Rohani³

et al. 2013

Materials Science and Engineering: C

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Lanthanide recognition: A Ho3+ potentiometric membrane sensor as a probe for determination of terazosin

Cited by 58 publications

References 35 publications

A New Approach for Decreasing the Detection Limit of Gentamicin Ion‐selective Electrodes by Incorporation of Multiwall Carbon Nanotubes (MWCNTs)/Lipophilic Anionic Additives

A New Approach for Decreasing the Detection Limit of Gentamicin Ion‐selective Electrodes by Incorporation of Multiwall Carbon Nanotubes (MWCNTs)/Lipophilic Anionic Additives

A sensitive and reliable method for therapeutic monitoring of α1-blockers in rabbit plasma by ion-pair chromatography with enhanced fluorescence detection

A Ho(III) potentiometric polymeric membrane sensor based on a new four dentate neutral ion carrier

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