Komplexometrische Bestimmungen als Säure-Base-Titrationen

The EDTA-titration for the determination of various metal ions by alkalimetry (based on the determination of H⁺ set free during the formation of EDTA-metal complexes) was further developed by using the glass electrode. With the improved method it was possible to make the determination more comfortable with a simple indication and a good accuracy. It is suitable for unbuffered solutions of Cd, Co, Cu, Mn(II), Pb and Zn. Hg and Ca must be titrated in 50% ethanolic solution. The relative standard deviation is approximately ± 0.3%.