ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Polymer and Materials Science  (4)
  • Wiley-Blackwell  (4)
  • The Royal Society
  • 1
    Electronic Resource
    Electronic Resource
    Determination of sulfur dioxide in white wines by flow injection with electrochemical detection (1991)
    Weinheim : Wiley-Blackwell
    Electroanalysis 3 (1991), S. 859-863 
    Details
    ISSN: 1040-0397
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The determination of sulfur dioxide in wines by flow injection analysis is described. The method is based on a dual electrochemical system, the upstream electrode being a coulometric electrode that eliminates interferences prior to the detection of the analyte at an amperometric electrode. At least 30 wine samples per hour can be determined by this procedure, and the results for free and total sulfur dioxide concentration in white wines compare favorably with those obtained by the standard aspiration-oxidation, method.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/elan.1140030822
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Determination of nickel and cobalt in wastewaters and seawater by constant current stripping potentiometry with nitrite enhancement of the stripping signal (1995)
    Weinheim : Wiley-Blackwell
    Electroanalysis 7 (1995), S. 1068-1074 
    Details
    ISSN: 1040-0397
    Keywords: Nickel ; Cobalt ; Constant current stripping potentiometry ; Catalytic enhancement by nitrite ; Trace analysis ; Seawater ; Wastewaters ; Dimethylglyoxime ; α-Benzyldioxime ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A rapid and highly sensitive method using constant current stripping potentiometry for the determination of nickel and cobalt in seawaters and industrial wastewaters has been established. The method is based on the adsorptive accumulation of nickel and cobalt in the presence of either dimethylglyoxime (DMG) or α-benzyldioxime (α-BD) prior to stripping using a constant reducing current. Nitrite is used in the stripping step for the catalytic enhancement of the stripping signal. Analytical protocols for standard solutions using DMG or α-BD show good precision (RSD's between 3 and 4% on the same film) and detection limits (30 ng/L for Ni/DMG; 10-ng/L for Co/DMG; 9ng/L for Co/α-BD). However, iron interferes significantly with the determination of cobalt using α-BD. With DMG, the simultaneous determination of nickel and cobalt is possible and has been developed into a protocol readily applicable to the routine determination of these metals. The analytical protocol is rapid, easy to perform and the results are in agreement with those obtained by graphite furnace atomic absorption spectrophotometry. The DMG procedure has also been optimized for the determination of cobalt alone, which has advantages for determinations at concentrations of 1 μg/L or less.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/elan.1140071114
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Elimination of zinc/copper intermetallic interference in the determination of zinc in wastewaters and seawater by potentiometric stripping analysis (1993)
    Weinheim : Wiley-Blackwell
    Electroanalysis 5 (1993), S. 685-689 
    Details
    ISSN: 1040-0397
    Keywords: Potentiometric stripping analysis ; Zinc analysis ; Zinc/copper intermetallic interference ; Short enrichment times ; Zinc speciation ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A new approach to the elimination of Zn/Cu intermetallic interference in the determination of zinc by potentiometric stripping analysis is described. The method is based on the use of several enrichment/ stripping cycles, with each cycle using an enrichment time of 10 seconds or less and the stripping signal from each cycle being added to give the total stripping signal. The additive method compares favorably with the traditional “third element” approach based on the use of gallium, and it is demonstrated that, for an industrial sample containing oil and grease, the additive method has significant advantages over the gallium method. The advantages of potentiometric stripping analysis in monitoring zinc in industrial wastes and the applicability of the technique to zinc speciation studies are described.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/elan.1140050810
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    An ultraviolet-cured, pH-sensitive membrane electrode for use in flow injection analysis (1989)
    Weinheim : Wiley-Blackwell
    Electroanalysis 1 (1989), S. 353-356 
    Details
    ISSN: 1040-0397
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The preparation of an epoxyacrylate, UV-cured polymer membrane electrode for determining pH is described. This is based on the neutral carrier, tridodecylamine, and shows Nernstian behavior from pH 5 to 10. Interferences from cations in this range are negligible. The response of the electrode is very fast, reaching more than 90% of the equilibrium value in less than 1 second, which makes it very suitable for use in flow injection analysis (FIA). The application of the electrode to the determination of pH in flow injection analysis using a miniature flow cell is described, and the influence of the buffer capacity and pH of the carrier on the accuracy of the pH measurement is discussed. The FIA system has been applied to the determination of the acidity of some soil samples.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/elan.1140010412
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...