COATED WIRE LEAD ION SELECTIVE ELECTRODE BASED ON DITHIZONE

Titration of sulphates with lead perchlorate employing lead ion selective electrode indication was studied using additions of various organic solvents at different pH' and ionic strength values. As the optimum emerged systems with 60-70% 1,4-dioxane, pH' 5.3-5.6. After dehydration with sodium hydroxide, dioxane must be freed from the electrode surface-oxidizing impurities by their reduction with sodium metal and subsequent distillation. The method was applied to determination of sulphates in mountain spring waters. Units of ppm can be determined; the limit of determination, however, depends considerably on the content of dioxane, total salt content in the sample, and speed of the semi-automatic titration. Lead can be determined with EDTA in concentrations down to c(Pb2+) = 5 . 10-6 mol l-1.

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Coated-Wire Silver Ion-Selective Electrode Based on Silver Complex of Cyclam.

Analytical Sciences ◽

10.2116/analsci.17.477 ◽

2001 ◽

Vol 17 (4) ◽

pp. 477-479 ◽

Cited By ~ 22

Author(s):

Aparna SIL ◽

Vijaykumar S. IJERI ◽

Ashwini K. SRIVASTAVA

Keyword(s):

Silver Ion ◽

Silver Complex ◽

Ion Selective Electrode ◽

Selective Electrode ◽

Coated Wire

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The determination of lead in water and sediment samples using a lead ion-selective electrode

Microchemical Journal ◽

10.1016/0026-265x(86)90121-9 ◽

1986 ◽

Vol 34 (3) ◽

pp. 277-283 ◽

Cited By ~ 4

Author(s):

Bobby L. Wilson ◽

Nelida Garduno Gaffare

Keyword(s):

Ion Selective Electrode ◽

Lead Ion ◽

Selective Electrode ◽

Sediment Samples ◽

Water And Sediment ◽

Water And Sediment Samples

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THE APPLICATION OF LEAD ION-SELECTIVE ELECTRODE FOR STUDY OF COMPLEX FORMATION OF Pb2+ IONS WITH HISTIDINE

Ion-Selective Electrodes ◽

10.1016/b978-0-08-037933-3.50039-9 ◽

1989 ◽

pp. 547-558

Author(s):

V.I. SCHERBAKOVA ◽

O.B. PANKRATOVA

Keyword(s):

Complex Formation ◽

Ion Selective Electrode ◽

Lead Ion ◽

Selective Electrode

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Determination of Vitamin Bi in Pharmaceutical Preparations Using a Lead Ion Selective Electrode and Atomic Absorption Spectroscopy

Journal of AOAC INTERNATIONAL ◽

10.1093/jaoac/62.2.315 ◽

1979 ◽

Vol 62 (2) ◽

pp. 315-319

Author(s):

Saad S M Hassan ◽

Mohamed T Zaki ◽

Mohamed H Eldesouki

Keyword(s):

Standard Deviation ◽

Atomic Absorption ◽

Absorption Spectroscopy ◽

Atomic Absorption Spectroscopy ◽

Pharmaceutical Preparations ◽

Ion Selective Electrode ◽

Lead Ion ◽

Fluorometric Method ◽

Selective Electrode

Abstract Simple, rapid, and accurate methods have been developed for determining vitamin Bx in pharmaceutical preparations without prior separation of the vitamin. The methods are based on the desulfurization reaction with potassium plumbite and measurement of the unreacted lead (II) ions at 217 nm using atomic absorption spectroscopy (AAS), or by titration with EDTA at pH 4.5 with the lead ion selective electrode and Gran's plot. The results compare favorably with those obtained using the USP fluorometric method. Recoveries of pure vitamin Bx averaged 99.1%, with a standard deviation of 0.8%, and 99.0%, with a standard deviation of 0.7%, for the AAS and ion selective electrode procedures, respectively.

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