A Comparative Study of 8‐Hydroxyquinoline and 8‐Hydroxyquinoline‐5‐sulfonic Acid for Antimony(III) Determination by AdSV. Substituent Effect on Sensitivity II

Rojas−Romo, Carlos; Arancibia, Veróníca

doi:10.1002/elan.201400616

Cited by 6 publications

(2 citation statements)

References 15 publications

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“…Evidence of the positive effect over sensitivity of ligands with sulfonic acid group was previously reported. Using an hanging mercury drop electrode (HMDE), a high sensitive methodology was described for Sb(III) determination using 8−hydroxyquinoline−5−sulfonic acid as complexing agent [18] as well as the analysis of ng L −1 levels of Sb(III) and V(V) with quercetin−5−sulfonic acid as chelating agent was also stated [4,19].…”

Section: Introductionmentioning

confidence: 99%

Determination of Sb(III) using an ex-situ bismuth screen-printed carbon electrode by adsorptive stripping voltammetry

Rojas−Romo

Serrano

Ariño

et al. 2016

Talanta

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The determination of Sb(III) on an ex-situ bismuth screen-printed carbon electrode (ex-situ BiSPCE) by means of adsorptive stripping voltammetry (AdSV) using quercetin-5'-sulfonic acid as chelating agent was optimized. The effect of different experimental parameters such pH, ligand concentration (CQSA), accumulation potential (Eacc) and accumulation time (tacc) were studied to obtain a wide linear range, the highest sensitivity and the lowest detection limit. Ex-situ BiSPCE was analytically compared with a sputtered bismuth screen-printed electrode (BispSPE) under optimal conditions. The obtained analytical parameters suggest that ex-situ BiSPCE behaves much better than BispSPE and the first was selected for this study. Optimal parameters were pH=4.6; CQSA=10.0 to 20.0×10(-6)molL(-1); Eacc=-0.5V and tacc=60s. Peak area is proportional to Sb(III) concentration up to 100.0μgL(-1) (tacc 60s) and 45.0μgL(-1) (tacc 120s) range, with detection limits of 1.2μgL(-)(1) (tacc 60s) and 0.8μgL(-1) (tacc 120s). The relative standard deviation for a Sb(III) solution (20.0μgL(-1)) was 3.9% for ten successive assays. Thus, the effect of various interfering metal ions was studied and the methodology was validated using a spiked groundwater reference material with very satisfactory results.

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Section: Introductionmentioning

confidence: 99%

Determination of Sb(III) using an ex-situ bismuth screen-printed carbon electrode by adsorptive stripping voltammetry

Rojas−Romo

Serrano

Ariño

et al. 2016

Talanta

Self Cite

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“…The stripping voltammetric methods for sensitive and selective determination of antimony can be performed in different routes, such as modification of electrode surface and using chelating compounds in solutions. The working electrodes used in the voltammetric determination of antimony can be separated into three main groups as mercury , , , gold ,, and carbon , based electrodes. Numerous adsorptive stripping voltammetry studies have been carried out for the determination of antimony following adsorptive accumulation of antimony complexes using different complexing agents such as alizarin red S , quercetin , chronilic acid , , pyrogallol ,, pyrogallol red , morin , phenyl fluorene , rivastigmine , 8‐hydroxyquinoline and hydroxyquinoline‐5‐sulfonic acid .…”

Section: Introductionmentioning

confidence: 99%

Over‐Oxidized Poly (Phenol Red) Film Modified Glassy Carbon Electrode for Anodic Stripping Voltammetric Determination of Ultra‐Trace Antimony (III)

Karabiberoğlu

Dursun

2016

Electroanalysis

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In this study, we introduce a very sensitive and selective method for the differential pulse anodic stripping determination of Sb(III) ion on the over‐oxidized poly(phenol red) modified glassy carbon electrode (PPhRedox/GCE) in 0.1 mol L‐1 HCl medium. The formation of both poly(phenol red) and over‐oxidized poly(phenol red) film on the electrode surfaces were characterized by electrochemical impedance spectroscopy, X‐ray photoelectron spectroscopy and scanning electron microscopy techniques. An anodic stripping peak of Sb(III) was observed at 0.015 V on the PPhRedox/GCE. Higher anodic stripping peak current of Sb(III) was obtained at PPhRedox/GCE compared with both bare GCE and poly(phenol red) film modified GCE (PPhRed/GCE). The calibration graph consisted of two linear segments of 0.044 ‐ 1.218 μg L−1 and 3.40 – 18.26 μg L−1 with a detection limit of 0.0075 μg L−1. The proposed over‐oxidized polymer film modified electrode was applied successfully for the analysis of antimony in different spiked water samples. Spiked recoveries for water samples were obtained in the range of 93.0–103.0%. The accuracy of the method was also verified through the analysis of standard reference materials (SCP SCIENCE‐EnviroMAT™ EP−L‐2).

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Speciation of antimony in anti-leishmanial drug using two different chemical receptors and adsorptive anodic stripping voltammetry on glassy carbon electrode

2021

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A Comparative Study of 8‐Hydroxyquinoline and 8‐Hydroxyquinoline‐5‐sulfonic Acid for Antimony(III) Determination by AdSV. Substituent Effect on Sensitivity II

Cited by 6 publications

References 15 publications

Determination of Sb(III) using an ex-situ bismuth screen-printed carbon electrode by adsorptive stripping voltammetry

Determination of Sb(III) using an ex-situ bismuth screen-printed carbon electrode by adsorptive stripping voltammetry

Over‐Oxidized Poly (Phenol Red) Film Modified Glassy Carbon Electrode for Anodic Stripping Voltammetric Determination of Ultra‐Trace Antimony (III)

Speciation of antimony in anti-leishmanial drug using two different chemical receptors and adsorptive anodic stripping voltammetry on glassy carbon electrode

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