39516 Federal Register / Vol. 50, No. 188 / Friday, September 27, 1985
39516 Federal Register / Vol. 50, No. 188 / Friday, September 27, 1985 / Rules and Regulations reaction irreversibility or by formation polarography or square-wave (3) Irving, H., “The Stability of Metal of two or more complex species in polarography). Complexes and Their Measurement equilibrium with each other. In this last (3) Interpretation and evaluation of Polarographically," Advances ih case it is necessary to apply the method resu lts, (i) Stability constants Polarography Proceedings of the 2nd by De Ford and Hume paragraph (d) (8) determined for a new substance can be International Congress, Ed. I.S. of this section to calculate stepwise compared with literature values for Langmuir (Pergamon Press, 1960). formation constants. standard substances (see Reference (4) Perrin, D.D., Dempsey, B., B u ffe r (2) Test report, (i) The test report substances, above) and used therefore for pH and Metal Ion Controls. should list for each metal ion to evaluate the strength of its (Chapman and Hall: London, 1974). investigated the half-wave potential complexing ability. (5) “Stability Constants of Metal-ion Complexes,” Part B, Organic Ligands, Ei /2 , co-ordination number and overall (ii) The system is physically stability constant. Compiled by D.D. Perrin, IUPAC meaningful if (A) the value of the Publication on Chemical Data Series, stability constant is positive and (B) the (ii) In addition, the following should No. 22 (Pergamon Press, 1979) also be reported: standard error is less than the constant (6) Grabaric, B., Tkalcec, M., Piljac, L, (A) Type of polarisable micro (the t-test should be used as a criterion).
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