Complexation of Copper(II) with Humic Acids Studied by Ultrasound Spectrometry

<table>Ultrasound data obtained for titration of humic sol at concentration of 1 g<svg height="5.4499998" id="M22" style="vertical-align:-0.0pt" version="1.1" viewbox="0 0 4 5.4499998" width="4" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,5.388)"><path d="M170 255q0 -25 -16 -41t-40 -16t-40 16t-16 41t16 41.5t40 16.5t40 -16.5t16 -41.5z" id="x22C5"></path></g>
</svg>dm<sup>−3</sup> by Cu(II) ions. The point of intersection corresponds with stoichiometry of formed complexes.</table>

Organic Chemistry International

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Figure 1

Figure 1: Complexation of Copper(II) with Humic Acids Studied by Ultrasound Spectrometry 