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This article in SSSAJ

  1. Vol. 39 No. 6, p. 1223-1225
    Received: June 20, 1975
    Accepted: Aug 26, 1975

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The Use of a Specific Ion Electrode for Determination of Bromide in Soils1

  1. Arthur B. Onken,
  2. R. S. Hargrove,
  3. C. W. Wendt and
  4. O. C. Wilke2



Bromide has desirable characteristics for use as a tracer for NO3- in some soil studies. However, its quantitative determination in the presence of Cl-, which occurs in interfering quantities in many soils, requires lengthy procedures. Further, Br- interferes with the quantitative determination of Cl- for which concentrations may also need to be determined. To facilitate the use of Br- as a tracer in such tests, a procedure for the rapid and accurate determination of water-extractable Br- in the presence of Cl- and Cl- in the presence of Br- was developed. These quantitative determinations over a wide range of concentrations were accomplished by use of standard curves, interference curves, and successive approximations. Bromide added to soil over a wide range of concentrations was quantitatively recovered.

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