Skip to main content
SpringerLink
Log in

Pyridine ketoximes as analytical reagents. XV

The spectrophotometric determination of ultra-trace amounts of cobalt in natural waters with 2-pyridyl-2-thienyl-β-ketoxime

  • Published:
Microchimica Acta Aims and scope Submit manuscript

Summary

A procedure is described for the determination of cobalt at the ppb level in samples of water from the Detroit River, Lakes Erie and St. Clair and wells in the Essex County, Ontario region using 2-pyridyl-2-thienyl-β-ketoxime as the spectrophotometric reagent after preconcentration with 2-nitroso-1-naphthol. The effects due to diverse ions, humic acid, acid backwashing, pretreatment of the samples and acid decomposition in the presence of organic matter are discussed. The outlined procedure indicates that cobalt may be determined in water samples over the range 0.2 to 1.0 ppb.

Zusammenfassung

Ein Verfahren zur Bestimmung von ppb-Mengen Kobalt in Wasserproben aus dem Detroit-River, dem Erie-See, dem St. Clair-See sowie in Quellwässern aus dem Gebiet von Essex, Ontario, wurde beschrieben, wobei nach Anreicherung mit 2-Nitroso-1-naphthol als spektrometrisches Reagens 2-Pyridyl-2-thienyl-β-ketoxim verwendet wurde. Die Wirkung verschiedener Ionen, der Huminsäure, der sauren Rückextraktion, der Vorbehandlung der Proben und der sauren Veraschung in Gegenwart organischer Substanzen wurde besprochen. Das angegebene Verfahren ermöglicht die Bestimmung von 0,2–1,0 ppb Kobalt in Wasser.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. H. R. Notenboom, W. J. Holland, and R. G. Billinghurst, Mikrochim. Acta [Wien]1973, 467.

  2. P. Beaupré and W. Holland, Mikrochim. Acta [Wien], to be published.

  3. E. S. Underwood, Trace Elements in Human and Animal Nutrition, 2nd ed. New York: Academic Press. 1962. Chapter 6.

    Google Scholar 

  4. D. C. Burrell, At. Absorption Newsletter4, 309 (1965).

    Google Scholar 

  5. R. F. Gould, Advances in Chemistry Series, Trace Inorganics in Water, American Chemical Society Publications, U. S. A., Vol. 73, p. 230.

  6. M. Schnitzer, et al., Can. J. Chem.49, 1053 (1971).

    Google Scholar 

  7. M. Schnitzer, Soil Science109, 333 (1970).

    Google Scholar 

  8. Windsor Utilities Commission, Water Division, Windsor, Ontario, Canada, private communication, 1974.

  9. Report to the Joint Commission on the Pollution of Lakes Erie and Ontario and the International Section of the St. Lawrence River, Volume 2, Lake Erie, 1968.

  10. E. B. Sandell, Colorimetric Determination of Traces of Metals. 3rd ed., New York: Interscience. 1952. p. 434.

    Google Scholar 

  11. Tran-Van Danh, Analyt. Chim. Acta36, 204 (1966).

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Chemistry, University of Windsor, N9B 3P4, Windsor, Ontario, Canada

    P. Beaupré & W. J. Holland

Authors
  1. P. Beaupré
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. W. J. Holland
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Beaupré, P., Holland, W.J. Pyridine ketoximes as analytical reagents. XV. Mikrochim Acta 70, 95–104 (1978). https://doi.org/10.1007/BF01196472

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01196472

Keywords

Search

Navigation