A new ion-selective electrode for potentiometric determination of Ce(III) ions

Saleh, Mohamed B.; Gaber, Abd El‐Aal M.; Khalaf, Moustafa M.R.; Tawfeek, Ahmed M.

doi:10.1016/j.snb.2005.12.031

Cited by 30 publications

(9 citation statements)

References 38 publications

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“…The detection limit was estimated as 0.8 nmol dm À3 of Ce(III) concentration by means of 3 : 1 current-to-noise ratio. This value was lower than those where the cerium determination was performed by ICP-AES, AAS, spectrophotometry or ion-selective electrodes [4,9,12,30].…”

Section: Linear Range Detection Limit and Reproducibilitymentioning

confidence: 76%

Adsorptive Stripping Voltammetric Determination of Nanomolar Concentration of Cerium(III) at a Carbon Paste Electrode Modified by N′‐[(2‐Hydroxyphenyl)Methylidene]‐2‐Furohydrazide

et al. 2009

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The aim of this work was to obtain an adsorptive stripping voltammetric method for the Ce(III) determination at a carbon paste electrode, chemically modified with N-[(2-hydroxyphenyl)methylidene]-2-furohydrazide (NHMF). The electroanalytical procedure comprised two steps: the Ce(III) chemical accumulation at À 200 mV followed by the electrochemical detection of the Ce(III)/NHMF complex, using anodic stripping voltammetry. The factors, influencing the adsorptive stripping performance, were optimized including the modifier quantity in the paste, the electrolyte concentrations, the solution pH and the accumulation potential or time. The resulting electrode demonstrated a linear response over a wide range of Ce(III) concentration (5.0 -90 nmol dm À3 ). The detection limit was found to be 0.8 nmol dm À3 on the basis of a signal to noise ratio of 3. The precision for six determinations of 10 and 55 nmol dm À3Ce(III) was 5.6% and 2.1% (relative standard deviation), respectively. Application of the procedure to the determination of cerium in phosphate rock and wastewater samples gave good results.

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Section: Linear Range Detection Limit and Reproducibilitymentioning

confidence: 76%

Adsorptive Stripping Voltammetric Determination of Nanomolar Concentration of Cerium(III) at a Carbon Paste Electrode Modified by N′‐[(2‐Hydroxyphenyl)Methylidene]‐2‐Furohydrazide

et al. 2009

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“…Thus, a quick, convenient, fast method is required to monitor neodymium in large number of environmental samples. Recently many papers for lanthanide ions have been reported La [12][13][14], Ce [15][16][17][18][19][20][21], Pr [22], Sm [23], Tb [24], Ho [25] and Yb [26] ions.…”

Section: Introductionmentioning

confidence: 99%

Comparative studies of neodymium (III)-selective PVC membrane sensors

Gupta

Goyal

Sharma

2009

Analytica Chimica Acta

186

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a b s t r a c tSensors based on two neutral ionophores, N,N -bis((1H-pyrrol-2-yl)methylene)cyclohexane-1,2-diamine (L 1 ) and 3,3 -(cyclohexane-1,2-diylbis(azan-1-yl-1-ylidene)bis(methan-1-yl-1-ylidene)bis(5-hydroxymethyl)pyridine-2-ol) (L 2 ) are described for quantification of neodymium (III). Effect of various plasticizers; 2-nitrophenyloctylether (o-NPOE), dibutyl butylphosphonate (DBBP), tri-n-butyl phosphates (TBP), dioctylpthalate (DOP) and chloronapthalen (CN) and anion excluder, sodiumtetraphenylborate (NaTPB) has been studied. The membrane composition of PVC:o-NPOE:ionophore (L 1 ):NaTPB (w/w; mg) of 150:300:5:5 exhibited best performance. The sensor with ionophore (L 1 ) exhibits significantly enhanced selectivity towards neodymium (III) in the concentration range 5.0 × 10 −7 to 1.0 × 10 −2 M with a detection limit of 1.0 × 10 −7 M and a Nernstian compliance (19.8 ± 0.3 mV decade −1 of activity) within pH range 4.0-8.0. The response time of sensor was found as 10 s. The influence of the membrane composition and possible interfering ions has also been investigated on the response properties of the electrode. The fast and stable response, good reproducibility and long-term stability of the sensor are observed. The sensor has been found to work satisfactorily in partially non-aqueous media up to 20% (v/v) content of methanol, ethanol or acetonitrile and could be used for a period of 3 months. The selectivity coefficients determined by using fixed interference method (FIM) indicate high selectivity for neodymium. The proposed electrode shows fairly good discrimination of neodymium (III) from other cations. The application of prepared sensor has been demonstrated in the determination of neodymium (III) in spiked water samples.

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“…A reasonably linear response was obtained for concentrations below about 900 mM ( Figure 3C): Ip (mA) = (266.2 AE 5.1) x10 À4 [Ce 3 + ] (nM) + (2.8 AE 0.3) (mA), R 2 = 0.998. A selective PVC membrane sensor based on N-[(2-hydroxyphenyl)methylidene]-2-furohydrazide (NHMF), [4-(4-nitrobenzyl)-1-phenyl-3,5-pyrazolidinedion)] (NBPP), 2-aminobenzothiazole and oleic acid gave detection limits of 7.6 mM, 1.6 mM, and 1.8 mM, respectively [44][45][46]. The ITO electrode yielded a comparable or lower detection limit compared to several other methods.…”

Section: Dynamic Range and Detection Limitsmentioning

confidence: 99%

“…Instrumental techniques used for cerium detection include: inductively coupled plasma optical emission spectroscopy (ICP-OES) [11,12], X-ray fluorescence spectroscopy [13], spectrophotometry [14,15], neutron activation analysis (NAA) [16], graphite furnace atomic absorption spectroscopy (GF-AAS) [12], chemiluminescence [17], fluorimetry [18], and ion-selective electrodes [19][20][21][22]. Some of these techniques require lengthy sample preparation and trained personnel, are complicated and are often either inaccessible or expensive techniques.…”

Section: Introductionmentioning

confidence: 99%

Cathodic Stripping Voltammetric Determination of Cerium Using Indium Tin Oxide (ITO)

et al. 2017

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Due to its numerous applications in the field of metallurgy and its role as an alloying element for slowing down the biodegradation of pure magnesium typically known to have very low corrosion resistance, the need to develop simple and inexpensive methods for determination of cerium is important. Ce3+ was determined by cathodic stripping voltammetry (CSV) using Osteryoung square‐wave voltammetry (OSWV) for the stripping step. Indium tin oxide (ITO) was used as the working electrode because of its very good positive potential range with smooth background current. Under optimized conditions, the calibration plot was linear in the concentration range of 100 nM to 700 nM Ce3+. A calculated detection limit of 5.8 nM was found for a 5 min deposition time at ITO based on the 3σ method. Interference from selected metal ions was also examined, and no significant interferences were observed. The good selectivity of this sensor makes it a good candidate for practical applications such as monitoring Ce3+ released into solution during the biodegradation of Mg−Ce alloys being developed for resorbable biomedical implants.

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A new ion-selective electrode for potentiometric determination of Ce(III) ions

Cited by 30 publications

References 38 publications

Adsorptive Stripping Voltammetric Determination of Nanomolar Concentration of Cerium(III) at a Carbon Paste Electrode Modified by N′‐[(2‐Hydroxyphenyl)Methylidene]‐2‐Furohydrazide

Adsorptive Stripping Voltammetric Determination of Nanomolar Concentration of Cerium(III) at a Carbon Paste Electrode Modified by N′‐[(2‐Hydroxyphenyl)Methylidene]‐2‐Furohydrazide

Comparative studies of neodymium (III)-selective PVC membrane sensors

Cathodic Stripping Voltammetric Determination of Cerium Using Indium Tin Oxide (ITO)

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