Indirekte inversvoltammetrische bestimmung von elementen unter anwendung von verdrängungsreaktionen

Berge, H.; Drescher, A.

doi:10.1016/s0003-2670(01)80968-5

Cited by 3 publications

(3 citation statements)

References 2 publications

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“…0.4 ppb in water samples). This value is significantly lower than the lowest quantification limit (5·10 -7 M) obtained from previous indirect polarographic lanthanide determinations [9,10]. The mean relative error of ten measurements of Lu (III) at 6.1·10 -9 M was 7.3%, which gives 4.5·10 -9 M as the limit of quantitation [14].…”

Section: Resultsmentioning

confidence: 55%

“…Berge and Drescher [10] proposed an indirect voltammetric method to determine lanthanides (such as lanthanum, neodymium, samarium, dysprosium and lutetium) via Zn-EDTA or Zn-DTPA complexes. The method is based on the difference between the stability constants of Zn-EDTA (K = 3.8·10 16 ) or Zn-DTPA (K = 4·10 18 ) and lanthanide-EDTA (e.g.…”

Section: Resultsmentioning

confidence: 99%

“…Two indirect voltammetric methods have been proposed to circumvent this problem. One is a displacement reaction between the metal ions and the EDTA or DTPA chelate of metal ions such as zinc or cadmium, which form less stable complexes and give well developed polarographic peaks [10,11]. Another method is the formation of a lanthanide complex with a reducible organic dye, and its subsequent determination [12].…”

Section: Introductionmentioning

confidence: 99%

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Indirect determination of lutetium by differential pulse anodic stripping voltammetry at a hanging mercury drop electrode

Kumrić¹,

Trtić-Petrović²,

Ignjatović

et al. 2008

Open Chemistry

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Lutetium has been determined by differential pulse anodic stripping voltammetry in an acidic solution containing Zn-EDTA. Lutetium (III) ions liberated zinc (II), which was preconcentrated on a hanging mercury drop electrode and stripped anodically, resulting in peak current linearly dependent on lutetium (III) concentration. Less than 0.4 ng mL -1 lutetium could be detected after a 2 min deposition.© Versita Warsaw and Springer-Verlag Berlin Heidelberg.

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Section: Resultsmentioning

confidence: 55%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Indirect determination of lutetium by differential pulse anodic stripping voltammetry at a hanging mercury drop electrode

Kumrić¹,

Trtić-Petrović²,

Ignjatović

et al. 2008

Open Chemistry

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Poly(catechol) Film Modified Glassy Carbon Electrode for Ultratrace Determination of Cerium(III) by Differential Pulse Anodic Stripping Voltammetry

Khoo¹,

Zhu

1999

Electroanalysis

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Oxidative electropolymerization of resorcinol, catechol and pyrogallol at the glassy carbon electrode in different media such as 0.10 M NaOH, 0.10 M phosphate buffer (pH 7.00) or 0.10 M NaClO 4 all gave water-insoluble ®lms, adherent on the electrode surface. Amongst them electropolymerization of catechol at the GC electrode in 0.10 M NaOH provided a highly sensitive and selective ®lm for Ce(III) and therefore, this poly(catechol) ®lm modi®ed glassy carbon electrode was exploited for the selective preconcentration of Ce(III) at open circuit, followed by its determination by differential pulse anodic stripping voltammetry both in batch and¯ow systems. Factors affecting the accumulation, stripping and removal steps were investigated and an optimized procedure was then developed. Under optimized conditions, for batch determination, the calibration plot was linear in the concentration ranges 2X00 Â 10 À9 M 1X00 Â 10 À8 M and 2X00 Â 10 À8 M 1X00 Â 10 À7 M Ce(III). A detection limit of 2X0 Â 10 À10 M (0.027 ppb) (SN 3) was found for a 10 min accumulation. For six successive determinations of Ce(III) at concentrations of 2X00 Â 10 À7 , 2X00 Â 10 À8 and 2X00 Â 10 À9 M, relative standard deviations were 3.36 %, 1.76 % and 4.08 %, respectively. Similar results were obtained for continuous¯ow analysis. Interference from selected foreign ions and substances were examined. The developed method was applied to Ce(III) determination in human urine, both in batch and continuous¯ow systems.

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Trace determination of lanthanum, cerium, and praseodymium based on adsorptive stripping voltammetry

Wang

Farias

Mahmoud

1985

Analytica Chimica Acta

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Indirekte inversvoltammetrische bestimmung von elementen unter anwendung von verdrängungsreaktionen

Cited by 3 publications

References 2 publications

Indirect determination of lutetium by differential pulse anodic stripping voltammetry at a hanging mercury drop electrode

Indirect determination of lutetium by differential pulse anodic stripping voltammetry at a hanging mercury drop electrode

Poly(catechol) Film Modified Glassy Carbon Electrode for Ultratrace Determination of Cerium(III) by Differential Pulse Anodic Stripping Voltammetry

Trace determination of lanthanum, cerium, and praseodymium based on adsorptive stripping voltammetry

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