Skip to main content
Log in

Determination of calcium in chlor-alkali brine by flow injection analysis

  • Published:
Microchimica Acta Aims and scope Submit manuscript

Summary

Determination of Calcium in Chlor-alkali Brine by Flow Injection Analysis

A few milligrams of calcium in one liter of chlor-alkali brine were determined by flow injection analysis. When the calcium content was lower, the preconcentration and separation of calcium from sodium chloride with a chelating resin column was employed. The flow injection analysis was based on the exchange reaction between calcium and zinc complex of ethylene glycol-bis(2-aminoethylether)tetraacetic acid (EGTA) in the presence of 2-(3,5-dibromo-2-pyridylazo)-5-[N-ethyl-N-(3-sulfopropyl)amino]phenol(H2R):

$$Ca^{2 + } + Zn(EGTA) + 2R \rightleftharpoons ZnR_2 + Ca(EGTA)$$

. Calcium (0.25–2.0 mg 1−1 in the presence of magnesium, iron(III), aluminum, copper(II), nickel, phosphate, chloride, sulfate and carbonate can be determined with a sampling rate of 40 h−1.

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

Access this article

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

Instant access to the full article PDF.

Similar content being viewed by others

References

  1. G. Nakagawa, H. Wada, and C. Wei, Anal. Chim. Acta145, 135 (1983).

    Google Scholar 

  2. T. Uchida, C. Wei, C. Iida, and H. Wada, Nagoya Kogyo Daigaku Gakuho33, 97 (1982).

    Google Scholar 

  3. K. Ohshita, H. Wada, and G. Nakagawa, Anal. Chim. Acta149, 269 (1983).

    Google Scholar 

  4. H. Wada, T. Ishizuki, and G. Nakagawa, Mikrochim. Acta [Wien]1983 II, 235.

    Google Scholar 

  5. H. Wada, G. Nakagawa, and K. Ohshita, Anal. Chim. Acta159, 289 (1984).

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

Wada, H., Deguchi, Y. & Nakagawa, G. Determination of calcium in chlor-alkali brine by flow injection analysis. Mikrochim Acta 87, 393–400 (1985). https://doi.org/10.1007/BF01196839

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01196839

Keywords

Navigation